the answer is Insertion mutation :)
(search up "types of mutations")
Point mutation is the alteration of the single nucleotide base in the sequence. Insertion mutation is not a type of point mutation. Thus, option D is correct.
What is point mutation?A point mutation is a modification and change in the base of the genetic sequence. In this type of mutation, only a single nucleotide base is altered. Point mutations are categorized as transition mutations and transversion mutations.
Silent, Nonsense, and missense are the transversion type of point mutation. In this mutation, the purines get altered by pyrimidines and vice versa. On the other hand, insertion mutation is the frameshift mutation.
Therefore, insertion is not a type of point mutation.
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Cytochalasin D is a drug that prevents actin polymerization. A cell treated with cytochalasin D will be inhibited from doing all of the following EXCEPT:________.
a) extend pseudopodia
b) move vesicles within a cell
c) contract muscle fibers
d) divide in two
Cytochalasin D is a drug that prevents actin polymerization. A cell treated with cytochalasin D will be inhibited from doing all of the following except move vesicles within a cell. Hence option b is correct.
What is actin polymerization?Actin polymerization is defined as a monomers associate with and disassociate from the ends of actin filaments in this reversible process. Actin filament polymerization typically takes place over three phases: a steady state phase, an elongation phase, and a nucleation phase. Actin filament assembly involves the phases of nucleation, elongation, and steady state.
A cell-permeable fungus toxin called cytochalasin D attaches to the barbed end of actin filaments and prevents both subunit interaction and separation. About 20 known mold-derived substances collectively known as cytochalasins impact actin stress fibers and cause fast actin depolymerization.
Thus, cytochalasin D is a drug that prevents actin polymerization. A cell treated with cytochalasin D will be inhibited from doing all of the following except move vesicles within a cell. Hence option b is correct.
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Natural killer (NK) cells __________. Natural killer (NK) cells __________. engage in immunological surveillance recognize and kill cancer cells cause abnormal cells to undergo lysis NK cells perform all of these roles.
Answer:
NK cells perform all of these roles
hope this helps
-lvr
Which explanation provides support for continental drift theory? O Dinosaurs lived on many continents. Coal fields match up across continents. Tropical plant fossils were found in warm areas. Similar rock types are found across continents.
Answer:
Similar rock types are found across continents
Explanation:
Can I have brainliest?
Similar composition of rocks are present across continents that support the theory of continental drift.
Similar rock types are found across continents is the evidence that support the continental drift theory because at the boundaries of two continent there must be similar type of rock present. Scientist Alfred Wegener presented Continental drift theory in the early 20th century.
Wegener noticed similarities between two continents when he pieced together maps of Africa and South America. He noticed that mountain ranges present on both continents line up to each other which means they are made of similar type of rock so we can conclude that similar types of rock are present across continents.
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. There are different methods of sowing the seeds. Which one of the methods given below is not the methods of sowing seeds used by the farmer?
Answer:
A) Broadcasting B) Seed-drill
Explanation:
Options of sowing seeds are given below.
A) Broadcasting B) Seed-drill C) Transplanting D) Scattering E) None of these
Farmers used two methods for sowing of seeds such as broadcasting and seed drilling. Broadcasting is a method of seed sowing in which seeds are scattered in the field by hands or machines while seed drill is another method of sowing in which a device or machine is used which bury the seed at certain depth and at proper position in the field. In seed drilling method, seeds are sowing in lines while in broadcast, seeds are sown in every part of the field.
A typical eukaryotic nucleus has to exchange a great deal of protein and nucleic acid material with the surrounding cytosol of the cell. Which choice correctly describes a feature of most nuclei that helps promote this exchange
Answer: A typical Eukaryote has an organized nucleus as well as an organized cell organelles.
The nucleus is enclosed in a nuclear envelope and the whole cell organelles are further enclosed in a plasma membrane (cell membrane).
From the question,the choice that correctly describe the feature of most nuclei that helps to promote the exchange of protein and other nucleic acids between the nucleus and the surrounding environment is the presence of nuclear pores which allows for selective movement of materials/items in and out of the nuclear space in a regulated manner.
Which phrase describes a feature of an earthquake’s epicenter?
starting point of an earthquake
place around the center of an earthquake
region directly above the focus
point about 100 kilometers deep in the lithosphere
Answer:
It is answer c
Explanation:
i know this because The epicenter is directly above the earthquake's hypocenter (also called the focus)
The phrase which describes a feature of an earthquake’s epicenter is: C. region directly above the focus.
An earthquake can be defined as a sudden, natural shaking of the ground, as a result of movements within the Earth's crust and upper mantle (lithosphere) that typically creates seismic waves.
An epicenter is the point on the surface of planet Earth, which is perpendicular to the hypocenter (focus) and it indicates where the seismic waves from an earthquake are most intense.
On a map, an earthquake’s epicenter is located at the point where the three (3) circles intersect because earthquake are generally shallow.
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Which is a structure that directs the cell's activities? nucleus Golgi apparatus ribosome mitochondrion
Answer:
the answer is nucleus
Explanation:
Organelles are the cellular structure that performs various functions. The organelle nucleus directs all the activities of the cell. Thus, option a is correct.
What is a nucleus?The nucleus is an organelle present inside the cell and has the most vital role in the functioning and hereditary. It controls majorly all activities in the cell including growth, inheritance, metabolism, etc.
It is enclosed in a nuclear membrane that separates it from the cytoplasm and is the region where the process of replication and transcription takes place. It is the control center that directs and regulates the cellular activity that is essential for the cell to survive.
Therefore, a nucleus is an organelle that regulates cellular activities.
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A person has a sex-linked inheritable disease. Which statement is true about the set of chromosomes which are likely to carry the genes for this disease?
1-The gene is present on a single pair of chromosomes.
2-The gene is present multiple pairs of chromosomes.
3-The gene is always present on an X chromosome.
4-The gene is always present on a Y chromosome.
The statement is true about the set of chromosomes that are likely to carry the genes for this disease is the gene is present multiple pairs of chromosomes.
What is an example of autosomal?An autosomal recessive disorder needs two copies of the altered gene to compel the disease.
For example the Huntington's disease.
Thus, option "B" is correct, The gene is present multiple pairs of chromosomes.
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Answer:
b
Explanation:
Any of a large group of diseases characterized by a condition in which the immune system produces antibodies against its own tissues, mistaking healthy cells, tissues, or organs for antigens is called a/an
Explanation:
Autoimmune Disorders
Suppose that an unusually high degree of aurora kinase activity is observed in the cervix. What could we reasonably conclude about C5M treatment efficacy across all cervical cancer cell lines, using this new information and the data within the passage
Answer:
The division of cervical cancer cells will be inhibited
Explanation:
Aurora kinases are a type of serine/threonine kinase enzymes that play critical functions during cell proliferation, and they are recognized to be potential targets in cancer therapy. The benzo[e]pyridoindole (C5M) agent is a hydrosoluble inhibitor of aurora kinases capable of inhibiting cell proliferation. C5M induces mitotic arrest by faulty (no separation) of the sister chromatids during cell division, thereby eventually leading to polyploidy and finally triggering cell death. It has been shown that C5M acts to prevent the entry in mitosis by inhibiting histone 3 (H3) phosphorylation of aurora kinases.
After Frida stops exercising, she continues to breathe heavily. What is most likely occurring in her body?
O Heavy breathing during exercise has produced an oxygen surplus in her muscles. This oxygen is being
Answer:
Strenuous exercise has caused her body to be in oxygen debt, and she is breathing hard while lactate is transported to the liver. This is a result of anaerobic respiration.
Explanation:
DNA is the genetic material that makes up living things, and folic acid plays an important role in the formation of DNA. Jon wants to study the effect of folic acid on DNA formation in microbes. Which statement accurately describe the variables in this study? A. The amount of folic acid and DNA synthesized are both dependent variables. B. The amount of folic acid and DNA synthesized are both independent variables. C. The amount of folic acid is the independent variable, and the DNA synthesized is the dependent variable. D. The amount of folic acid is the dependent variable, and the DNA synthesized is the independent variable. E. The amount of folic acid and DNA synthesized are neither dependent nor independent variables.
Answer:
The correct answer is - C. The amount of folic acid is the independent variable, and the DNA synthesized is the dependent variable.
Explanation:
DNA is the genetic material of most of the living organisms. In this question, Joe wants to study to see the effect of folic acid on the synthesis of the DNA. Folic acid ae the essential nutrients or vitamin for the synthesis of nitrogen bases of the DNA that are purines and pyrimidines. A dependent variable and an independent variable are two important part of any experiment.
A dependent variable is a variable being tested and measured. In the experiment Jon is conducting, the amount of DNA becomes a dependent variable that is being tested and measured in the presence of folic acid. And folic acid is the independent variable tested to check the formation of DNA in bacteria.
Thus, the correct answer is - C. The amount of folic acid is the independent variable, and the DNA synthesized is the dependent variable.
Answer:
The amount of folic acid is the independent variable, and the DNA synthesized is the dependent variable.
Explanation:
Edmentum
What does the immune system protect the body against? changes of the internal body temperature changes in the temperature of environment changes caused by harmful pathogens changes in the pH of the blood
Answer:
changes caused by harmful pathogens
Explanation:
The immune system is the body's defense system. It protects the body from things that can harm it such as bacteria, viruses, fungi, and toxins.
Hope this helps.
Answer:
its c
Explanation:
Is it organic or not organic
Gastrin, histamine, endorphins, serotonin, cholecystokinin, and somatostatin are hormones or paracrines that are released directly into the lamina propria. Which of the following cell types synthesize and secrete these products?
a) parietal cells
b) enteroendocrine cells
c) mucous neck cells
d) zymogenic cells
Answer:
The correct answer is option b, that is, enteroendocrine cells.
Explanation:
The specialized cells of the pancreas and the gastrointestinal tract exhibiting endocrine function are termed as enteroendocrine cells. These cells generate gastrointestinal peptides or hormones in response to a distinct kind of stimuli and discharge them into the bloodstream for the systemic effect. These are the most varied endocrine cells found within the body.
The intestinal enteroendocrine cells produce somatostatin, cholecystokinin, motilin, enteroglucagon, and neurotensin hormones. The G cells present within the intestine produce gastrin. In the gastric glands, the gastric enteroendocrine cells are present, which produce histamine, and others like cholecystokinin, alpha and gamma-endorphin, somatostatin, and others.
In the islets of Langerhans, the pancreatic enteroendocrine cells are present, which produce hormones like ghrelin, amylin, somatostatin, and pancreatic polypeptide.
Plants that are adapted to live on land ( botanical term)
Answer:
"Embryophytes " is the perfect solution.
Explanation:
Each of some kind of plant sub-system that maintains the embryo inside the maternal tissues, including the tracheophytes as well as bryophytes.The other most common species of organisms or plants seem to be the surface plants including embryophytes, furthermore precisely Embryophyta or Metaphyta. They are considered as 'land plants' but even though, in comparison to the connected green algae, those who continue living primarily throughout terrestrial environments, mainly aquatic ones.Which of these must exist for natural selection to cause change ?
Answer:
The answer is A.
Explanation:
Which best describes what happens if two waves meet and build on each other?
A. constructive interference
B. destructive interference
C. reflection
D. absorption
Answer:
constructive interference
Explanation:
when two waves build off of each other, they interfere with one another and construct. therefore, the answer is constructive interference.
When the path difference between subsequent crystal planes is equal to an integral number of electromagnetic radiation wavelengths, constructive interference occurs. Thus, option A is correct.
What is the constructive interference?Where the lines (which represent the peaks) cross over one another, constructive interference occurs. In other words, constructive interference occurs when two waves are in phase.
When two waves are entirely out of phase (a peak is located in the middle of two waves), destructive interference ensues.
Constructive interference is the phenomenon where the total amplitude of two waves is equal to the sum of the amplitudes of the separate waves when two waves are in phase and their maxima add.
Therefore, constructive interference best describes what happens if two waves meet and build on each other.
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step-by-step plan for dealing with a chemical splashed in your eyes.
Explanation:
go to the nearest eye wash station open ur eyes and let the water wash out the chemicals.
what are the advantages of modern cutting crops
Answer:
the advantages of using modern technology
more yield of cropseasy farmingmore varieties of cropsfruits and vegetables are available all year round
As células são os componentes fundamentais de todos os seres vivos, não sendo encontradas apenas nos vírus. Algumas pessoas costumam dizer que as células são formadas por membrana plasmática, citoplasma e núcleo. Entretanto, nem todas as células possuem núcleo organizado, recebendo o nome de:
Answer:
Entretanto, nem todas as células possuem núcleo organizado, recebendo o nome de: células eucarióticas
Explanation:
As células eucarióticas são caracterizadas por possuir um núcleo definido, localizado no citoplasma. A diferença que tem com as células procarióticas é que o núcleo nelas está em uma região do citoplasma chamada nucleoide.
Além disso, as células eucarióticas têm um nível mais alto de complexidade em relação à sua informação genética, podendo realizar dois processos para replicar seu DNA: mitose e meiose
How do the frequencies of the waves compare?
O Wave A has a lower frequency because it has a
smaller amplitude.
O Wave A has a higher frequency because it has a
shorter wavelength.
The waves have the same frequency because they
have the same wavelength.
O The waves have the same frequency because they
have the same amplitude.
Answer:
O. Wave A has a higher frequency because it has a shorter wavelength.
Explanation:
Wavelength refers to the distance between two crests while frequency refers to the number of waves passes through a specific point per second. Frequency and wavelength are inversely proportional to each other. Inversely proportional means if one increases, the other decreases and vice versa. If the frequency of the wave is higher so its wavelength becomes shorter and if the frequency of the wave is shorter so its wavelength is higher.
Answer: B.
Explanation: Wave A has a lower frequency because it has a longer wavelength.
In order for translation to occur: Please choose the correct answer from the following choices, and then select the submit answer button. transcription must be occurring simultaneously. there must be large numbers of free amino acids present in the cytoplasm. the DNA must produce large numbers of free amino acids. replication must be occurring simultaneously. the nuclear membrane must first dissolve
Answer:
there must be large numbers of free amino acids present in the cytoplasm
Explanation:
In order for translation to occur, there must be a large number of free amino acids in the cytoplasm.
These free amino acids are usually carried by the transfer RNA which also carries the corresponding mRNA codon.
During translation, as the codons in the mRNA match their complements in the tRNA, the amino acid being carried by the tRNA is released and a peptide bond is formed between subsequent amino acids until the required polypeptide bond is formed.
Translation and transcription only occur simultaneously in prokaryotic cells where there is no barrier between the cell's genetic materials and the cytoplasm, unlike in eukaryotic cells where the genetic materials are housed in the membrane-bound nucleus.
When you eat, your blood glucose level rises. Soon after, it drops as the glucose is stored. Where does it go?
Explanation:
About to six hours after you eat the glucose levels in your blood decrease triggering your pancreas to produce glucagon. This hormone signals. your liver and muscle cells to change the stored glycogen back into glucose.
(Q030) All members of the nuclear receptor family Group of answer choices are cell-surface receptors. do not undergo conformational changes. are found only in the cytoplasm. interact with signal molecules that diffuse through the plasma membrane.
Answer:
interact with signal molecules that diffuse through the plasma membrane.
Explanation:
Nuclear receptors are responsible for recognizing steroids and other molecules. They interact with signal molecules that diffuse through the plasma membrane.
What are signal molecules?Signal molecules are responsible for transmission of information. Different signaling molecules are of different size, shapes, confirmations, etc.
Its example include acetylcholine, dopamine, epinephrine, glycine, etc.
These molecules interacts with nuclear receptors and helps in signal transmission to and fro from the cell.
Thus, option d is correct.
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Which of the following allows the passage of small molecules between animal cells? Please choose the correct answer from the following choices, and then select the submit answer button. desmosomes nucleoli tight junctions black holes gap junctions
Answer:
cell membrane
Explanation:
it has small pores thus it is semi permeable
Question
Q2. A student places peaches into a pure water solution
Give two differences you would expect to find in the water
after ino hours.
Answer:
The correct answer - peaches will swell.
Explanation:
In the hypotonic solution, solution has a higher water potential than that of the cell of peach, so water will move from a region of higher water potential to a lower water potential across via osmosis.
Peaches have more solutes than pure water as it has higher sugar content than pure water. Hence, endosmosis will take place which means the water molecules will move from outside to inside of the peaches through wall of peaches takes place. Due to this, peaches will swell eventually.
Thus, the correct answer - peaches will swell.
name three factors needed for germination to occur in plants
Answer:
Three factors needed for germination to occur in plants:
1 - water
2 - sunlight
3 - air
Which of the following best expresses the concept of natural selection?
A) differential reproductive success based on inherited traits
B) inheritance of acquired characteristics
C) change in response to need
D) a process of constant improvement, leading eventually to perfection
E) survival of the fastest
Answer:
The correct answer is - option A. differential reproductive success based on inherited traits
Explanation:
Natural selection is the differential reproductive and survival of particular population due to the difference of shared characteristics that are inherited in a specific environment. In other words natural selection is differential reproductive success based on inherited traits.
The term differential reproductive success is suggests that comparing and analyzing successful reproduction rates between groups statistically which means how many individuals of the population left behind due to not inheriting traits require for survival.
Thus, the correct answer is - option A. differential reproductive success based on inherited traits
Due to genetic changes and the environmental conditions when the organism adapts itself to the current situation for survival is called natural selection.
Natural selection means that the organism that survived over another have better traits and characteristics for adaptation.
The correct answer is:
Option A. differential reproductive success based on inherited traits.
This can be explained as:
A particular type of trait carried by an organism that is better for adapting to survival than the other organism carrying less favorable trait will have a better chance of survival and their reproductive success will be much higher.Based on the inherited characteristics the natural selection will be based on reproductive success.Differential reproductive success is an analysis in which comparison is done among the organism that survived and those that did not.Comparing their traits and characters can give an idea about the factor affecting the selection.Therefore, differential reproductive success based on inherited traits best expresses natural selection.
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Which is least likely to be impacted by runoff from a factory? A) river B) groundwater C) lake D) ocean
Answer:
Groundwater
Explanation:
The factories mostly need large quantities of water to carry out their production precesses, however, as well as they need natural recources for their operation, they also dispose of them and a large part of the environmental contamination is due to the release of substances emitted by these. It´s very easy for toxic waste to contaminate rivers, lakes and aceans. Groundwater on the other hand is more complicated to contaminate because it´s found in aquifers below the surface of the arth, making by these factories to reach these places; althouh not impossible.