Answer:
"It lets you see the chemicals being absorbed or emitted by the light source.
PLEASE HELP MEEE I NEED HELP ON THIS QUESTION
Answer:
C. Spore formation
Explanation:
Option C above is the correct answer.
Spore formation is actually a method of asexual reproduction. Fungi actually reproduce asexually via spore formation. Some examples of organisms that reproduce via spore formation are Rhizopus, mushroom, mucor, etc.
The spores are usually stored in sacs which are known as sporangia. When there is a bursting of the sac, spores that are single-celled, thick and thin walled are obtained/formed. The spores are usually resistant to environmental conditions.
What do you think the purpose of the blender was in your DNA extraction experiment?
Blender is used in the DNA extraction experiment. Blender is responsible for the separation of cells. This facilitates DNA extraction.
What is DNA extraction?DNA extraction is the procedure of extraction of DNA from the cell in vitro with the help of chemicals. A blender is used in extraction which separates the cells from each other. This facilitates the process of DNA extraction.
DNA is insoluble in alcohol. Addition of alcohol to the cell mixture isolates the DNA from the mixture, this results in the development of white stringy DNA at the top of the mixture. Blender is alcohol, soap, salt solution and detergent.
The basic principle of DNA isolation is disruption of the cell wall, cell membrane, and nuclear membrane as DNA is present in the nucleus. To release the highly intact DNA into solution it is followed by precipitation of DNA and removal of the contaminating biomolecules.
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HELP ASAP
How did the environment affect the populations of peppered moths in the 1800s in
London?
Because of the soot covering everything, the dirtier darker moths will be eaten
less often, allowing them to reproduce and pass their genes on to the next
generation.
Because of the soot covering everything, the lighter colored moths will be eaten
less often, allowing them to reproduce and pass their genes on to the next
generation.
The environment did not affect the peppered moths-- the populations are still
the same.
Answer:
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Explanation:
Explained the effects of the use of antibodies in the control of a disease
Answer:
An antibody, also known as an immunoglobulin, is a large Y-shaped protein produced by B- cells and used by the immune system to identify and neutralize foreign objects such as bacteria and viruses.
Each tip of the “Y” of an antibody contains a paratope (a structure analogous to a lock) that is specific for one particular epitope (similarly analogous to a key) on an antigen, allowing these two structures to bind together with precision.
Though the general structure of antibodies is very similar, a small region at the tip of the protein is extremely variable, allowing millions of antibodies with different antigen binding sites to exist. This region is known as the hypervariable region.
Five isotypes of antibodies are found in different locations and perform different specific functions.
The base of the Y plays a role in modulating immune cell activity. This region is called the Fc region, and phagocytes may bind to it to initiate phagocytosis.
Antibodies that bind to surface antigens on a bacterium attract the first component of the complement cascade with their Fc region and initiate activation of the classical complement system.
Testosterone does which of the following?
OA. Develops accessory sex organs.
ОВ.
AIDS in spermatogenesis.
OC. Controls sex drive.
OD
All of the above
The definition of a parasitic relationship is what
Answer:
A parasitic relationship is one in which one organism, the parasite, live off of another organism, the host, harming it.
how might a sudden rise in CO2 in the blood affect the gas exchange process ?
Answer:
process is faster
Explanation:
when CO2 accumulates in the blood it causes homeostatic imbalance eg it causes a fall in blood pH therefore gaseous exchange takes place faster to rid the body of this gas maintaining balance in the body
The skeleton of the human hand is similar in structure to
a. Bird's wings
b. Ancient fish
c. Dog's legs
d. All of the above
Answer:
a. Bird's wings
Explanation:
Discuss the relationship of carbon dioxide and oxygen. Explain how it remains Balanced. What has man done to upset this natural relationship?
Answer: Power plants
Explanation: They release the waste from it into the air
Answer:
Explanation: the primary function of the respiratory system is to take in oxygen and eliminate carbon dioxide
The image shows a section of a root tip of Broad Bean with cells from the region of cell division, just behind the root cap. Five
cells have been numbered (1-5). Which statements accurately describe the mechanism by which the cells ensure that
chromosomes are passed successfully to the next generation? Select ALL that apply.
A)
Cell 1 lacks chromosomes and cannot contribute genetic material to future
cells.
Cells 4 and 5 have recently divided and have a cell plate that formed
between them
B)
c)
D)
Cell 3 is providing a mechanism for increasing genetic diversity in the
daughter cells.
Cell 2 is undergoing anaphase to separate the duplicated chromosomes to
opposite poles of the cell.
Cells 4 and 5 have recently divided and are now haploid, containing half of
a full set of chromosomes after division
E)
Answer:
The answer is B and D
Explanation:
I just did it
Answer:
b and d
Explanation:
I just did it on USA test prep
Why is it important that professional organizations advocate for their members?
a. This ensures that there are good peer network groups.
b. This ensures the best price.
c. This ensures that the member's best interest is protected.
d. This ensures that the best officials are elected.
Answer:
C. This ensures that the member's best interest is protected.
Explanation:
EDG2021
Answer:
C) This ensures that the member's best interest is protected.
Explanation:
What converts sound waves to electrical impulses in the nervous system?
Oval window
Pinna
Cochlea
Tympanic membrane
Where are the organs associated with balance located?
The brain
The heart
The ear
The stomach
What type of muscle typically forms a lining for various organs?
Rough muscle
Smooth muscle
Cardiac muscle
Skeletal muscle
What are the body's two systems of internal communication?
Digestive and Endocrine systems
Nervous and Respiratory system
Respiratory and Endocrine systems
Endocrine and Nervous systems
Answer:
2.the inner ear 3. the smooth muscle and the skeleton muscle.
In order for a trait to be considered a competitive advantage, the trait must(1 point)
allow the individual to utilize fewer food and water resources to survive.
allow the individual to have fewer diseases and not get sick.
allow the individual to be stronger and outcompete others.
allow the individual to survive better and reproduce more in that environment.
Why are hooves more advantageous for horses in the modern era?(1 point)
Hooves are better equipped for environments with plains.
Hooves are better suited with environments with wetter climates.
Hooves are better suited for environments with a wider range of vegetation.
Hooves are better suited for environments with plenty of trees.
Imagine a major volcanic eruption has dramatically changed the environment on an island such that the average temperature and available sunlight are much lower. Of the following species present on that island, which species is most likely to adapt and evolve to this change instead of going extinct?(1 point)
a large mammal species with a low reproduction rate and specific food needs.
a bird species with specific nesting requirements that only feeds on one type of seed.
a reptile species with a high reproduction rate and very similar individuals.
an insect species with a high reproduction rates and a significant mutation rate
Of the four factors that affect the evolution of species, which factor is driven by random events?(1 point)
Speciation
Competitive advantage
Genetic variation
Differential survival and reproduction
Which factor will most likely guarantee evolution rather than extinction?(1 point)
larger animal sizes
changes in available food sources
changes in the environment
higher reproduction rates
Answer:
Did you ever get the answers?
Explanation:
Any trait that is to be considered as a competitive advantage, trait must allow the individual to survive better and reproduce more in that environment.
What is evolution?
Evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection. It is decent with modification from preexisting species.
The trait that has the ability of relative fitness which means relative survival and relative reproduction shall be considered as more competitive. Both of these, criteria possess a competitive advantage.
Hooves are more advantageous for horses in the modern era because hooves are better suited for environments with a wider range of vegetation. Hooves help horses run farther and faster on the open prairies, helping them flee from predators and find fresh grass for grazing.
The species which is most likely to adapt and evolve to this change is an insect species with high reproduction rates and a significant mutation rate. This is because insect belongs to r-selected species that have fewer chances of extinction as compared to k-selection species.
The factor which is driven by random events is Genetic variations.
The factor which is most likely guarantee evolution rather than extinction is higher reproduction rates. Because a higher reproduction rate is a characteristic of r-selected species.
Therefore, the option which is correct for each specific question is briefly described.
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Which of the following pairs represent homologous structures?
Complete question:
Which of the following pairs represent homologous structures?
Wings of grasshopper and forelimbs of flying squirrel Tentacles of Hydra and arms of starfish Forelimbs of a bat and forelegs of a horse Wings of a bird and wings of a mothAnswer:
3. Forelimbs of a bat and forelegs of a horse
Explanation:
Homologous characters are structures with the same basic elements. Their position in the body and the relations with adjacent structures are also the same in different organisms, and they even share the same embryological development.
These structures might show variations between the organisms exhibiting them. Variations might be related to their function and to the environment in which the organism lives. The function they accomplish is not necessarily the same in all the organisms involved.
These homologous characters are present in organisms related that share a common ancestor.
For example, whales, humans, and cats all have the same bones in the same order, but they matured differently in later embryological development.
Among the options, the only possible pair that represents homologous characters is option 3. Forelimbs of a bat and forelegs of a horse. Both structures are the anterior extremities of the animals and share the same bones, even though they might differ in the development degree. Forelimbs and forelegs have the same position and relation with other structures in the body, and embryologically, they are the same.
mitosis and meiosis are different types of cell division? Which of the following events occurs Only during the process of meiosis?
Answer:
True; C: chromatid formation
Explanation:
Which statement correctly describes the flow of energy in photosynthesis?
Answer:
DPhotosynthesis stores energy because energy is released when glucose is formed from carbon dioxide and water. The passage describes a condition that is inherited.
Energy from the Sun flows into plants through photosynthesis, which is also known as “putting together with light,” and eventually into humankind. In the end, humans are powered by the Sun's energy to eat and survive. Thus, option D is correct.
What describes the flow of energy in photosynthesis?Solar energy is converted into chemical energy during photosynthesis, which produces glucose from water and carbon dioxide. The by-product is the emission of oxygen. In the process of breaking down glucose during cellular respiration, oxygen is consumed, which also produces heat and chemical energy.
Photosynthesis is the tremendous energy flow that underlies electricity and is the foundation of all life. Whether we are vegetarians or not, we joyfully devour our food without giving the basic mechanism that provides us with this gift even the least thought.
Therefore, Because energy is released when glucose is created from carbon dioxide and water, photosynthesis saves energy. The paragraph mentions a hereditary ailment.
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which is the main chemical substance found in khat?
Answer:
The principal active components in khat are cathinone and cathine (norpseudoephedrine) (see also Drug profile on synthetic cathinones). Chewing khat releases these substances into the saliva; they are rapidly absorbed and eliminated.
Explanation:
Select the correct answer.
Which is an example of dehydration synthesis?
A. DNA synthesis from nucleotides
B. conversion of proteins into its amino acids
C. conversion of lipids into fatty acids
Why are time zones necessary?
A. Seasonal changes due to the revolution of the Earth around
the Sun requires the need for time differences.
B. Moon phases cycle every 28 days but vary according to
your location.
C. The rotation of the Earth causes the Sun to rise earlier in
the eastern United States.
D. The Earth's orbital motion can easily change.
Answer:
C
Explanation:
PLEASE HELP WILL GIVE BRAINLIEST
Which reaction would be most changed if the plant did not have access to the sun?
a. None of the reactions would be affected
b. H reaction would stop
c. G reaction would stop
d. Both reactions would immediately be stopped
Answer:
d
Explanation:
photosynthesis requires energy from the sun to produce glucose and oxygen
As much as 25% of the fruits and vegetables grown in Chinese agricultural
regions rot before they can be brought to market. Which of these approaches
is a possible solution?
A. More-efficient preservation methods
B. A reduction in irrigation
C. Planting more seeds
D. Less-efficient ways of farming
Answer:
A.More-efficient preservation methods
The Arg genes that encode the enzymes for arginine biosynthesis are located at several positions around the genome of E.coli, and they are regulated coordinately by a transcription regulator encoded by the ArgR gene. The activity of the Arg R protein is modulated by arginine. Upon binding arginine, ArgR alters its conformation, dramatically changing its affinity for the DNA sequences in the promoters of the genes for the arginine biosynthesis. A. Given that ArgR is a repressor protein, would you expect that ArgR would bind more tightly or less tightly to the DNA sequences when arginine is absent?
Solution :
The Arg genes is used to synthesize the arginine. Arginine is chemical building block. It is very important and is used by our body to make the proteins for our body. When the Arg ID is abundant, the expression for the biosynthetic genes must turned off. And if the ArgR behaves as the gene repressor, then the binding of the arginine increases the infinity for the regulatory sites, and allows it to the bind and then shut off the expression of the genes.
If the ArgR acts as the gene activator, then the binding of the arginine would be predicted to reduce the affinity for the regulatory DNA, and preventing the binding and the shutting off the expression for the Arg genes.
Woodpeckers and squirrels fight for nesting rights in the same holes and spaces in trees, while the lions and cheetahs of the African savanna fight for the same antelope and gazelle prey. Which of the following statements about these relationships is accurate?
A.
These are examples of predation because lions and cheetahs eat woodpeckers and squirrels.
B.
These are examples of competition because these organisms are fighting for resources.
C.
These are examples of predation because the organisms are trying to take each other’s food and homes.
D.
These are examples of competition because no organisms are helped or harmed.
Answer:
b
Explanation:
they are fighting for the same things so it would be competition
In what form is energy stored in muscles
Which of these body systems has cells that attach to each other to form a leak-proof barrier?
Select one:
Urinary system.
Reproductive system.
Respiratory system.
Endocrine system.
Answer:
Epithelial cells are tightly packed, and this lets them act as barriers to the movement of fluids and potentially harmful microbes. Often, the cells are joined by specialized junctions that hold them tightly together to reduce leaks.
Explanation:
In what way does cultural understanding influence health?
O A. Some groups are less likely to know how diseases are spread.
O B. Some cultures may not know that a certain food is bad for a
person's health
O C. Different cultures have varying knowledge about what diseases
can be cured.
O D. All of the above
D. All of the above way does cultural understanding influence health
Why is it crucial to healthcare that we understand culture?Respect for cultural diversity is advantageous to customers, stakeholders, and communities and promotes good health outcomes. Cultural respect is also essential for obtaining accuracy in medical research since many factors, including behaviours, language, norms, beliefs, and viewpoints, can affect health communication.
Cultural health beliefs have an impact on how individuals perceive their health and health issues, when and from whom they seek medical attention, and how they react to advice for a change in lifestyle, medical treatments, and treatment compliance.
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Formula
Photosynthesis
Answer:
6CO2 + 6H2O → C6H12O6 + 6O2.
carbon dioxide + water —> glucose + oxygen + water
Explanation:
5'-AUGGGUAACGGCGUG-3' is an mRNA sequence.
After translation, how many amino acids would this sequence contain in the protein?
Answer:
3???
Explanation:
explain how mammalian skin adapted to its function
Answer:
IDONT KNOW
Explanation:
SRY
Gus drew a diagram to compare marsupial and placental mammals
which label belongs in the area marked Y?
a) have a two-week gestation period
b) young develop inside body
c) sometimes lay eggs
d) are endotherms
please help fast, thank you!
Answer:
A
Explanation: