False. The first antibiotic, penicillin, was discovered by Alexander Fleming when he found fungi growing on his bacterial cultures and inhibiting their growth. Streptomycin is another antibiotic, but it was discovered later by Selman Waksman and Albert Schatz.
An antibiotic is a type of antimicrobial substance active against bacteria. It is the most important type of antibacterial agent for fighting bacterial infections, and antibiotic medications are widely used in the treatment and prevention of such infections. The first person to directly document the use of molds to treat infections was John Parkinson (1567–1650). Antibiotics revolutionized medicine in the 20th century. Alexander Fleming (1881–1955) discovered modern day penicillin in 1928, the widespread use of which proved significantly beneficial during wartime.
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an excretory system, such as the flame bulb system of flatworms, consisting of a network of tubules lacking internal openings is called?
An excretory system, such as the flame bulb system of flatworms, consisting of a network of tubules lacking internal openings is called a "protonephridium."
Protonephridium is an excretory system consisting of a network of tubules lacking internal openings. It is found in phyla Platyhelminthes, Nemertea, Rotifera, and Chordata (lancelets). The end of the tubule has flame cells. The flame bulb system is a type of protonephridium found in flatworms that helps in excretion and osmoregulation. The system is composed of specialized cells called flame cells and a network of tubules that ultimately open to the outside of the organism, allowing waste to be removed.know more about excretory system here: https://brainly.com/question/10298346?referrer=searchResults
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CAN SOMEONE PLEASE HELP ME ASAP
Answer:
in picture
Explanation:
please like my answer
Sydney was vaccinated against COVID-19 six months ago. Recently she was a close contact of an infected individual so she went and got tested. It came back positive but Sydney feels fine other than a little fatigued. After two days she tested negative. Which immune cells are likely responsible for Sydney's quick and painless recovery?
B cells and memory T cells are the immune cells are likely responsible for Sydney's quick and painless recovery.
Memory B cells are responsible for producing antibodies, which are proteins that can recognize and neutralize the virus. If Sydney had been vaccinated against COVID-19, her immune system would have generated memory B cells in response to the vaccine. These memory B cells would have "remembered" the virus and been able to produce antibodies rapidly upon re-exposure to the virus, helping to clear the virus from her body quickly.
Memory T cells, on the other hand, play a role in recognizing infected cells and eliminating them. They can help coordinate the immune response and directly kill virus-infected cells. Memory T cells can also "remember" the virus after initial exposure or vaccination and mount a rapid response upon re-exposure, helping to clear the virus more efficiently.
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which four pathogens are frequently the cause of food-borne illnesses? multiple select question. neisseria meningitidis noroviruses listeria monocytogenes salmonella enterica serovars t4 phages escherichia coli o157:h7 variola major virus
The four pathogens that are frequently the cause of food-borne illnesses are Noroviruses, Listeria monocytogenes, Salmonella enterica serovars and Escherichia coli O157:H7.
The correct option is B,C, D and F .
In general , It is important to follow proper food safety practices, such as washing hands and cooking food to the appropriate temperature, to prevent the spread of these and other food-borne pathogens.
As, Noroviruses, Listeria monocytogenes, Salmonella enterica serovars, and Escherichia coli O157:H7 are among the most common pathogens that cause food-borne illnesses. Noroviruses are a group of highly contagious viruses that cause gastrointestinal symptoms such as vomiting, diarrhea, and stomach cramps.
Hence , B,C, D and F are the correct option
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n what direction does lymph flow? a. interstitial space to the blood b. intestinal tract to the blood c. blood to the intestinal tract d. blood to the interstitial space
Lymph flows from the direction of a. interstitial space to the blood. Lymphatic vessels collect excess fluid and waste products from the interstitial spaces between cells, and this fluid is called lymph.
The lymphatic system is a complex network of vessels, tissues, and organs that works in conjunction with the circulatory system to help maintain fluid balance and immune function.
Lymphatic vessels are similar to blood vessels in structure, but they are more permeable and have valves that prevent backflow.
Lymph then flows through lymphatic vessels and lymph nodes, which filter the lymph and remove foreign particles, before it is eventually returned to the bloodstream via the thoracic duct and the right lymphatic duct.
So, the correct answer is option a) interstitial space to the blood.
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(complete question)
In what direction does lymph flow? a. interstitial space to the blood b. intestinal tract to the blood c. blood to the intestinal tract d. blood to the interstitial space
how does the preliminary search for oil reserves cause environmental degradation? drilling to try to find oil may release oil from reserves that then affects ecosystems. searching for oil can often cause spills that negatively affect ecosystems. when searching for oil, companies often have to clear-cut areas of forest. seismic waves sent into the ground by companies searching for reserves can disorient marine and other wildlife.
The preliminary search for oil reserves causes environmental degradation by drilling to try to find oil may release oil from reserves that then affects ecosystems.
Oil reserves may be discharged into the environment during this procedure, posing a serious hazard to wildlife and damaging the adjacent ecosystems.
Additionally, while doing exploration, oil spills may happen. These spills may harm ecosystems and the species that depends on them. Even little spills have a severe effect on local ecosystems, causing long-term harm and biodiversity loss.
To gain access to the land where the reserves are situated, oil exploration companies frequently need to wipe up forest regions. Deforestation can have a negative impact on the local ecology by causing habitat loss, soil erosion, and other issues.
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Complete question
How does the preliminary search for oil reserves cause environmental degradation?
a. drilling to try to find oil may release oil from reserves that then affects ecosystems.
b. searching for oil can often cause spills that negatively affect ecosystems.
c. when searching for oil, companies often have to clear-cut areas of forest.
d. seismic waves sent into the ground by companies searching for reserves can disorient marine and other wildlife.
If you were interested in studying plasmid structure, which one of the following cell types would be appropriate for you to examine?a.Human cellsb.Fungal cellsc.Bacterial cellsd.All cell types
The most appropriate cell type to examine when studying plasmid structure is bacterial cells.
Plasmids are circular, double-stranded DNA molecules, which are found exclusively in bacterial cells. They are distinct from the bacterial chromosome, as they are smaller and can be found in multiple copies within the cell.
Plasmids are important for bacterial gene regulation, as they often encode for essential proteins and other molecules. By studying the structure of plasmids, researchers can gain insight into how bacteria function and how they interact with their environment.
Additionally, plasmids can be used to transfer genetic material between different bacterial species, and this knowledge can be used to create new treatments for bacterial infections. Therefore, bacterial cells are the ideal type of cell to examine when studying plasmid structure.
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what regulates the transition of intestinal stem cells to differentiated cells in the gut epithelium?
The transition of intestinal stem cells to differentiated cells in the gut epithelium is regulated by a complex interplay of signaling pathways, transcription factors, and epigenetic modifications.
One key signaling pathway involved is the Wnt pathway, which is essential for maintaining the stem cell population and promoting differentiation. In the absence of Wnt signaling, stem cells differentiate into Paneth cells, which are specialized cells that produce antimicrobial peptides and play a role in the immune response.
Other signaling pathways, such as Notch and BMP, also play important roles in regulating the differentiation of intestinal stem cells. Notch signaling promotes differentiation towards absorptive and secretory cell lineages, while BMP signaling promotes differentiation towards the enteroendocrine cell lineage.
Transcription factors such as HNF4α and GATA4 are also involved in regulating the transition of intestinal stem cells to differentiated cells. HNF4α is required for the differentiation of enterocytes, which are the most abundant cell type in the gut epithelium. GATA4 is involved in the differentiation of multiple cell types, including enterocytes, goblet cells, and enteroendocrine cells.
Epigenetic modifications, such as DNA methylation and histone modifications, also play a role in regulating the differentiation of intestinal stem cells. These modifications can control the expression of genes involved in differentiation, and alterations in epigenetic marks have been linked to various diseases, including colorectal cancer.
The transition of intestinal stem cells to differentiated cells in the gut epithelium is a complex process that is regulated by multiple signaling pathways, transcription factors, and epigenetic modifications.
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A weakened and expanded arterial wall is termed a(n)
A. aneurysm
B. plaque
C. embolus
D. dissection
A weakened and expanded arterial wall is termed an:
A. aneurysm
An aneurysm refers to a bulging or expansion of a blood vessel, typically an artery, due to the weakening of its wall. This condition can potentially lead to the rupture of the blood vessel, which may result in severe complications or even be life-threatening.
Causes of aneurysms
high blood pressure (hypertension) over many years resulting in damage and weakening of blood vessels. fatty plaques (atherosclerosis) resulting in a weakness of the blood vessel wall. inherited diseases that may result in weaker than normal blood vessel walls.Know more about artery - brainly.com/question/64497
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???????????? Someone help me with this answer please
microbiologists have identified endotoxins as group of answer choices associated with gram-positive bacteria. a-b toxins. molecules that bind nerve cells. excreted from the cell. a part of the gram-negative cell wall.
About 75% of the outer membrane of gram-negative bacteria that might result in fatal shock is made up of endotoxins, which are glycolipid, LPS macromolecules. Hence (C) is the correct option.
Gram-negative bacteria's cell walls contain endotoxins in their outer membrane. They cannot be eliminated from materials by conventional sterilisation procedures because they cause significant immunological reactions in humans (such as fever and septic shock). Gramme negative bacteria's cell walls contain lipopolysaccharide endotoxin polymers. Gramme negative bacteria in the intestinal flora are responsible for producing endotoxins. Gramme negative bacteria do not produce LPS as an external byproduct.
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microbiologists have identified endotoxins are
A) associated with gram-positive bacteria.
B) molecules that bind nerve cells.
C) part of the gram-negative cell wall.
D) excreted from the cell.
E) A-B toxins.
2. Which gland is in the middle of the forehead and regulates the growth of bones?
pituitary gland
pineal gland
parathyroid gland
thyroid gland
Answer: pituitary gland
Explanation: It produces different types of specialized hormones, including growth hormones. The roles of growth hormones include influencing our height and helping build our bones and muscles.
Answer: 1 or A. - pituitary gland
Explanation: The pituitary gland is a structure in our brain that produces different types of specialised hormones, including growth hormone (also referred to as human growth hormone or HGH).
If you are shipwrecked, it is not a good idea to drink seawater because it __________.
If you are shipwrecked, it is not a good idea to drink seawater because it is too salty and can dehydrate your body instead of hydrating it.
This is because the salt content in seawater is much higher than the human body can handle and consuming it can lead to further dehydration and potentially dangerous health complications. It is important to find a source of fresh water or to collect rainwater in order to stay hydrated in a survival situation.
Drinking seawater can lead to dehydration due to its high salt content, which increases the salinity of your blood and causes your body to expel more water to remove the excess salt. This results in an increased need for water, making you thirstier and ultimately exacerbating dehydration.
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for gene 1, one reporter construct (reporter 1a) is made in which the coding region of the gene is replaced by the reporter gene mcherry. for gene 2, two reporter constructs (reporters 2a and 2b) are made. in reporter 2a, the coding region of the region is replaced with gfp, while in reporter 2b, gfp is placed downstream of the coding region of the gene but the coding region of the gene is left in place. in each case, the core promoter regions and the upstream cis regulatory module for each gene is used to drive the expression of the reporter. what aspect of gene expression is being monitored by the reporter constructs, reporter 1a and reporter 2a?
Aspect of gene expression is being monitored by the reporter constructs, 1A or 2A is transcription and aspect of gene expression is being monitored by 2B is translation.
The process through which a gene's information is translated into a function is known as gene expression. RNA molecules that code for proteins or non-coding RNA molecules that perform other roles are transcribed, which mostly causes this.
A) The gene's transcription. These reporters largely obliterate the gene's usual coding sequence, making it unable to carry out the necessary changes. These creations will reveal the location and timing of the gene's transcription.
B) This reporter examines how the gene is translated and the final destination of the protein produced by this gene. It is still feasible for the right protein to be produced by including the reporter in the gene's DNA, which also makes it possible to follow that protein to its ultimate site, unlike with a transcriptional reporter.
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Complete question:
The expression patterns of two genes, Gene 1 and Gene 2, are being monitored using reporter genes in an animal. The structures of the genes and the reporter gene constructs in the figure shown in question 12.18. For Gene 1, one reporter construct (1A) is made in which the coding region of the gene is replaced by the reporter gene mCherry. For Gene 2, two reporter constructs (2A and 2B) are made. In reporter 2A, the coding region of the region is replaced with GFP, while in reporter 2B, GFP is placed downstream of the coding region of the gene but the coding region of the gene is left in place. In each case, the core promoter regions and the upstream cis regulatory module for each gene is used to drive the expression of the reporter.
A) What aspect of gene expression is being monitored by the reporter constructs, 1A or 2A?
B) What aspect of gene expression is being monitored by 2B?
Premorbid, prodromal, active, residual. Henri is suffering from tardive dyskinesia as a result of taking chlorpromazine. His expected symptoms include.
Henri is suffering from tardive dyskinesia as a result of taking chlorpromazine. His expected symptoms include facial tics, lip smacking, tongue protrusion, and other movements.
Involuntary, repetitive movements of the face, tongue, and other body parts are signs of tardive dyskinesia. Remaining after the active phase of Henri's pharmaceutical use has ended, these tardive dyskinesia symptoms would be categorized as residual.
This is due to the fact that tardive dyskinesia usually appears after long-term antipsychotic drug usage, frequently after the active period of treatment has concluded.
Among Henri's symptoms are recurrent, involuntary facial tics, lip smacking, tongue protrusion, and other movements. Daily tasks like eating, speaking, and interacting with others can be hampered by these erratic movements.
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Henri's symptoms of tardive dyskinesia are considered residual symptoms, as they occur after the active phase of his treatment with chlorpromazine.
Premorbid refers to the state of a person's functioning prior to the onset of a disorder, prodromal refers to the early signs and symptoms of a disorder, and active refers to the period of time when a disorder is at its most severe and symptoms are most prominent.
In Henri's case, his tardive dyskinesia is a result of prolonged treatment with chlorpromazine, which is an antipsychotic medication that can cause movement disorders.
The tardive dyskinesia is considered a residual symptom because it persists even after the active phase of his treatment with the medication has ended.
It is important for Henri's healthcare provider to monitor his symptoms and adjust his treatment plan accordingly to manage his tardive dyskinesia.
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althrough air contains 79 percetn nitrogen, very little of it dissolves in blood plasma because of its low solubility in water this is an example of:
A. Boyle's law.
B. Dalton's law.
C. Henry's law.
D. the Bohr effect.
Althrough air contains 79 percetn nitrogen, very little of it dissolves in blood plasma because of its low solubility in water this is an example of:
Henry's law
Henry's law, which states that the amount of gas dissolved in a liquid is directly proportional to the partial pressure of that gas in contact with the liquid and the solubility of the gas in the liquid.
Nitrogen has a low solubility in water, which is why only a small amount of it dissolves in blood plasma despite its high abundance in the air.
Henry's law states that the amount of gas dissolved in a liquid is directly proportional to the partial pressure of the gas above the liquid, at a constant temperature. This law explains why some gases, such as nitrogen, have low solubility in water despite their high concentration in the air.
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C. Henery law.
This phenomenon, where very little nitrogen dissolves in blood plasma due to its low solubility in water despite air containing 79 percent nitrogen
Henry's law states that when a gaseous mixture (e.g., the atmosphere) is in contact with a solution, the amount of any gas in that mixture that dissolves in the solution is in direct proportion to the partial pressure of that gas
Henry's law, statement that the weight of a gas dissolved by a liquid is proportional to the pressure of the gas upon the liquid. The law, which was first formulated in 1803 by the English physician and chemist William Henry, holds only for dilute solutions and low gas pressures.
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the ancient water erosion features on the surface of mars suggest that the planet must have had a much
The ancient water erosion features on the surface of Mars suggest that the planet must have had a much wetter and warmer climate in its past. These conditions would have allowed liquid water to flow and shape the Martian landscape, creating the erosion features we observe today.
The ancient water erosion features on the surface of Mars suggest that the planet must have had a much wetter and warmer climate in the past. These features, such as dried-up riverbeds, canyons, and gullies, indicate that liquid water once flowed on the surface of Mars. This suggests that Mars may have had a thicker atmosphere and a stronger magnetic field in the past, which could have helped to trap heat and prevent water from evaporating into space. However, over time, Mars lost its atmosphere and magnetic field, causing its surface to become cold and dry. Understanding the history of water on Mars is important for scientists seeking to understand the potential for life on other planets.
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The ancient water erosion features on the surface of Mars suggest that the planet must have had a much wetter and potentially habitable environment in its past.
What is water erosion?
Water erosion refers to the process where water flows over the surface, wearing away rocks and soil, and creating channels and valleys. The presence of these features on Mars indicates that liquid water likely existed on the planet's surface, which could have supported life at some point in its history.
The ancient water erosion features on the surface of Mars suggest that the planet must have had a much wetter and more hospitable environment in the past. These features, such as dry riverbeds and canyons, indicate that flowing water played a significant role in shaping the planet's landscape.
However, today Mars is a dry and barren planet with a thin atmosphere, making it difficult for liquid water to exist on its surface. Understanding the history and mechanisms of water erosion on Mars is important for studying the planet's geological history and the potential for past or present life.
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The ______ approach is typically the best method for most routine negative messages. A.indirect. B.direct. C.business. D.inverted. E.diverted.
B. Direct. This approach is typically the best method because it is succinct and straightforward and ensures that the recipient is clear on the message. It also helps reduce the risk of misunderstanding.
What is succinct?Succinct means being expressed in few words - it is an adjective to describe something that is clear and precise. It is often used to describe someone's writing. Succinct writing conveys a lot of information in a short, concise way.
What is Direct approach?The direct approach is a type of problem-solving strategy that focuses on finding a solution to a problem immediately, without searching for any secondary or hidden issues that may be causing it. This approach involves determining what is causing the issue, analyzing the problem and using proven methods to solve it. The goal is to solve the problem quickly and move on.
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"all dogs are animals. some animals are pets. therefore, some dogs are pets." this example is a(n) ________ syllogism that is likely to be endorsed as ________ due to the belief bias.
The given statement is an example of a categorical syllogism, a logical argument consisting of three parts: major premise, minor premise, and conclusion.
The argument is likely to be endorsed as valid due to the belief bias, a cognitive bias that makes people more likely to accept arguments that are consistent with their pre-existing beliefs. In this case, the premises are both true and believable, and the conclusion logically follows from them. However, the validity of an argument depends on its logical structure, not just its content, and not all categorical syllogisms are valid.
It is important to critically evaluate arguments and avoid relying solely on belief biases to determine their validity.
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The example given is a categorical syllogism.
The traditional type is the categorical syllogism in which both premises and the conclusion are simple declarative statements that are constructed using only three simple terms between them, each term appearing twice (as a subject and as a predicate): “All men are mortal; no gods are mortal
It is likely to be endorsed as valid due to the belief bias, as people tend to believe that dogs are commonly kept as pets, and therefore, the conclusion seems to fit with their pre-existing beliefs.
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DNA is found in the cells in the form of
A. RNA
B. a nucleus
C. chromosomes
D. proteins
Answer:
C. Chromosomes
Explanation:
In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes.
hope this helps <3
Answer: Chromosomes
Explanation: i had answered this question already, but brainy mods took it down for no reason. Brainly has bad moderation.
According to the appearance on the right side of each column in procedure c, which rock type appears to be the least resistant to weathering and erosion?
Some types of rock exhibit remarkable degradation resistance. Igneous materials, especially intrusive igneous stone of stone, are challenging to water to permeate, therefore they mature slowly.
What kind of rocks are more susceptible to erosive weathering and erosion?Rocks weather in various ways as well. Generally speaking, igneous rocks are solid and more weather-resistant. Because they are difficult for water to get through, intruding rock types deteriorate progressively. Typically, sedimentary rocks deteriorate more quickly.
Which sort of rock resists erosion the least?But there are certain exceptions, such schist, which is substantially weaker that its pre-metamorphic condition of lime or shale. Less erosion-resistant ecosystems are those which are built from loose sediments, including soil with glaciated till.
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in order to prevent spread of microorganisms from the microbiology laboratory, the room air should be
Answer: Under negative pressure and filtered
Explanation:
What is the role of helicase in DNA Replication?
O repair errors
bind sugars to phosphates in the backbone
reads one strand of DNA and creates another strand
unwind and unzip the DNA
Helicase plays an important role in DNA replication by unwinding and unzipping the double-stranded DNA.
Some key functions and tasks of helicase in DNA replication include:
• It unwinds the DNA strands at the replication fork to separate the hydrogen bonds between the bases. This creates a Y-shaped structure with single-stranded DNA strands.
• It moves along the DNA strands in a 3' to 5' direction, breaking the base pairs as it goes. This helps in separating the strands.
• It plays an essential role in initiating DNA replication at the origin of replication. Helicase initially binds to the origin and unwinds short stretches of DNA to get the process started.
• It continues unwinding more strands as the replication fork progresses. This ensures continuous DNA strand separation to facilitate replication.
• It works together with other replication proteins like DNA polymerases, DNA ligase, etc. Helicase exposes the single DNA strands so that these proteins can perform their functions.
• It does not have a direct role in repairing errors or joining DNA strands. It only unwinds DNA during the replication process.
• It binds to ATP for energy and this ATP hydrolysis allows helicase to unwind the DNA strands.
So in summary, helicase reads one strand of DNA and creates two single strands by unwinding and unzipping the DNA double helix. This enables DNA replication to proceed.
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in sytemic capillaries the direction of the chloride shift will be:
In systemic capillaries, the direction of the chloride shift will be from the red blood cells into the plasma.
The reason behind the chlorine shift:
This is due to the action of carbonic anhydrase within the red blood cells, which catalyzes the conversion of carbon dioxide and water into bicarbonate ions and hydrogen ions. The bicarbonate ions then diffuse out of the red blood cells and into the plasma, while chloride ions move in to maintain the electrochemical balance. This process helps to regulate the pH of the blood and ensures that carbon dioxide is efficiently transported from the tissues to the lungs for elimination.
The process of chlorine shift:
Carbon dioxide (CO2) enters the red blood cells from the tissues. Inside the red blood cells, carbonic anhydrase catalyzes the reaction of CO2 with water (H2O) to form carbonic acid (H2CO3). Carbonic acid (H2CO3) then dissociates into bicarbonate (HCO3-) and a hydrogen ion (H+). Bicarbonate (HCO3-) is transported out of the red blood cells in exchange for chloride ions (Cl-) from the plasma. This is known as the chloride shift. The chloride shift helps to maintain the electrochemical balance in the red blood cells as bicarbonate ions are exchanged for chloride ions. In systemic capillaries, the direction of the chloride shift is toward the red blood cells, as chloride ions move into the cells and bicarbonate ions move out into the plasma.
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An animal with a worm shaped body plan characterized by a cuticle, pseudocoelom, and an alimentary canal is called?
How does the structure of dermal tissue allow it to carry out its function?
OA. Its cells have large vacuoles that can expand to store sugars and water for the plant.
OB. Its cells are narrow, hollow tubes with pits that allow water to be transported throughout the plant.
OC. Its cells are small and tightly packed in order to form a protective covering for the plant.
OD. Its cells have thick, fibrous cell walls that provide strength and flexibility to the plant.
The right option that depicts how the makeup of dermis tissue permits it to serve out its role is option.
A tissue is what?A tissue is a collection of cells that cooperate to carry out a certain task for an organism. Plants, animals, and people all have tissues, which are necessary for the healthy operation of organ and organ systems. The epithelial, connective, muscular, and nerve tissues are the four primary types of tissue found in the human body. Every type of cell has a distinct structure and purpose that add to the organism's general health and wellbeing. To better understand the roles and actions of tissues, studies of tissues at different cell phones molecular, and anatomical levels can be conducted.
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a garden snake slithers past shayla's feet as she walks to her driveway. shayla startles, momentarily frightened. a spike of activity is probably occurring in the _____ in shayla's brain.
When Shayla encountered the garden snake slithering past her feet, her brain immediately reacted with a spike of activity in the amygdala.
This small, almond-shaped part of the brain located deep within the temporal lobe is responsible for the body’s fear responses. It is the first brain region to detect and respond to a potential threat.
Since Shayla had no prior warning of the snake, her amygdala would have reacted immediately, activating the body’s fight-or-flight response. This would have included a rush of adrenaline, increased heart rate, and heightened senses.
These physiological changes are designed to prepare the body to fight or flee the perceived danger. In this case, Shayla would have experienced a momentary spike of fear, startled and frightened by the unexpected sight of the snake.
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the air pocket in an egg ____________ as the egg ages.
Answer:
gets larger
Explanation:
Because it's the right answer
if two brothers were killed in a plane crash, would it be possible to determine the identities of the remains based on mtdna?
No, it would not be possible to determine the identities of the remains based on mtdna if two brothers were killed in a plane crash.
What benefit does mtDNA provide in forensic investigations?MtDNA could not tell two brothers who died in a car accident apart from one another the way nuclear DNA could, but it could be used to establish their familial relationship.Due to the great sensitivity of mtDNA analysis, forensic experts are able to gather information from small, sparsely biologically preserved bits of evidence and old, cold case-related items of evidence. Both male and female kids have mitochondrial DNA that carries maternal traits. As a result, siblings who share a mother have similar mitochondrial DNA.They are crucial in the control of oxidative stress, apoptosis, and cellular metabolic regulation.For more information on mitochondrial DNA kindly visit to
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Please help with this one
Biological Organization Levels refers to the order in which elements, structures, and systems are organized, from the smallest element to the largest system. 1) Gene. 2) Chromosome. 3) DNA. 4) Nucleu. 5) Cell. 6) Organism. 7) Population.
What are organization levels?
When talking about biological organization levels, we are referring to the hierarchical order of the different structures that compose individuals and the systems in which they are immersed.
It can go from the smallest things, such as subatomic structures, to the most complex systems, such as biomes.
Among the many different biological organization levels, we can mention the molecular level.
In the exposed example, we need to order hierarchically the elements mentioned at the left, for the smallest molecule, to the largest organization.
The smallest element is the gene. So this is the first level.Genes are arranged in chromosomes. So chromosomes are the second level.Chromosomes compose the DNA molecule, which becomes the third level.DNA is located inside the eukaryotic nucleus. So the nucleus is the fourth level. The nucleus is inside the cell, which is the fifth level.Several cells compose an organism. So the organism is at the sixth level. And finally, many organisms are part of a population, the largest system in this example. This is the seventh level.You can learn more about organization levels at
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