Answer:
The correct answer is A- B cells are activated and release antibodies
Explanation:
When an antigen invades a mammals body, specific immune cells engulf and ingest it. Some of the digested pieces are displayed on the cells bodies, the next step will be that B cells are activated and release antibodies.
We used a lonza electrophoresis device to study the dna methods in our lab. What part of the electrophoresis set up is represented by a? [5]
The image to determine the 'component a' is not found here, but the electrophoresis device is composed of an agar/polyacrylamide gel, a chamber and poles (cathode and anode).
What is electrophoresis?Electrophoresis is a device used in the laboratory to separate biomolecules depending on their charge and mass.
The electrophoresis device consists of an agar/polyacrylamide gel, a chamber, and two poles: cathode (positive) and anode (negative).
Electrophoresis is very useful to separate DNA molecules, which migrate to the positive pole due to their negative charge.
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During which phase of the cell cycle does the cytoplasm of a cell divide to form two daughter cells?.
Answer:
Telophase or in other words the final phase of mitosis
Explanation:
Thoroughly analyze the alguments made in the article regarding potential
evolutionary links between the australopithecines and the ancestors of
the genus Homo. What evidence is provided by the author to conclude
that the later paranthropoids were not direct ancestors of modern
humans? Is this evidence sufficient to support his claim? Why or why not?
Extinct species of hominins known as Australopithecus may have been the ancestors of modern humans (Homo sapiens). The first fossils, which were found in South Africa, are referred to as Australopithecus.
After almost a century of findings, the first species to be called Australopithecus was given that name in 1925, and today, paleoanthropologists may access a sizable collection of fossilized hominin remains from Africa. High-quality fossils of early human species are still very hard to find despite decades of research, making it even more important for scientists to continue finding them in order to better understand the biology and variety of Australopithecus. The Great Rift Valley in eastern Africa, the limestone caves of South Africa, the sedimentary deposits of the Chad Basin, and the Djurab Desert are the only places on earth where geological circumstances are favorable for the preservation and excavation of hominid fossils (an arid region in central Chad).Learn more about the Australopithecus with the help of the given link:
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How could we slow down or help stop ocean acidification?
Answer stop using plastic.
Explanation: Hello! My name is Hunter and I am a Marine Biologist within the state of Juno beach Fl, I work at a marine center located there and I teach people about Marine life animals and some ways to approach animals, and more. And here are some ways you can slow down or help stop ocean acidification. If you care for marine animals take the decision to use glass, wooden, bamboo, or metal etensals. This helps instead of using plastic because most plastic ends up being in the ocean. studies show that about 150 animals die a day from inhaling plastic. Second, Most plastic has acid or a type of smell like the rubber gloves at the dentist, That smell and taste can be extremely toxic and deadly for marine life animals. Third, If you are a fisher or you work on a supply boat, Make sure your oil on the boat doesn't leak, Just because you call someone and they put a net around the oil doesn't mean animals can't get under the net. Animals in the ocean are free, If you're on or work on a supply boat, Make sure to check your oil frequently. Oil leaks happen more than you think if you are not experianced! I hope this helped and how WE can slow down or reduce acdification. Have a great rest of your day or night.
Which system of the body would be most directly affected if excess cholesterol led to plaque deposits in arteries?
circulatory system
immune system
endocrine system
respiratory system
Answer:
endocrine system
Explanation:
it would stop circulating hormones through they system
Which of the following will increase the reaction rate of an enzyme reaction?
Decreasing the amount of enzyme while leaving the product amount unchanged
Decreasing the amount of product while leaving the enzyme amount unchanged
Increasing the amount of enzyme while leaving the substrate amount unchanged
Increasing the amount of substrate while leaving the enzyme amount unchanged
Answer:
Increasing the amount of enzyme while leaving the substrate amount unchanged
Explanation:
Select all of the following statements that describe the structure of a molecule of DNA
The statements that describe the structure of a molecule of DNA include the following:
Twisted double helixContains deoxyribose sugarContains the nitrogenous bases, adenine, thymine, cytosine and guanine.What is DNA?This is known as deoxyribonucleic acid and carries genetic instructions in all living things.
It is a twisted double helix with a deoxyribose sugar and the nitrogenous bases such as adenine, thymine, cytosine and guanine.
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What causes scientists to disagree?
O A. Some scientists are better than others.
B. They have unique perspectives and skills.
C. Scientists disagree to get attention.
O D. Many scientists do not use the scientific process.
Answer:
B. They have unique perspectives and skills.
1. Angiotensin II triggers the __________ of the intraglomerular mesangial cells, which results in a(an) __________ of the filtration surface area.
Angiotensin II triggers the contraction of the intraglomerular mesangial cells, which results in a decrease in the filtration surface area.
What is Angiotensin II?Angiotensin II is a peptide hormone capable of narrowing the blood vessels, which is fundamental in many physiological processes.
Angiotensin II is also fundamental for retaining sodium and water in the body and activating the secretion of aldosterone.
This peptide hormone (Angiotensin II) is secreted by various cells types, especially in the liver, in different body tissues.
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An earthquake causes a new canyon to form. The canyon separates two populations of snakes. After many years, the canyon fills in, and the two populations come back together. If they can still interbreed, then __________.
Select one:
a.
evolution has occurred
b.
evolution has not occurred
c.
evolution will occur when the offspring are born
d.
evolution will never occur
Answer:
B. Evolution has no occurred
Explanation:
The change in genetics would prohibit the two populations from interbreeding.
EX. Take humans and apes, we are generally the same species however we cannot successfully interbreed.
What are the horticultural advantages of producing plants by cuttings rather than from seeds? Can you think of any disadvantages?
.Propagating a plant by cuttings will allow you to keep the special characteristics of that plant. Plants grown from seed will often be different from the parent plant and from each other. Propagating a new plant via cuttings avoids the difficulties of propagating by seed.
Disadvantages of propagating stem cuttings are: You will get a lack of genetic diversity and you may potentially increase Insect and Disease weakness in the new plant.
Select all the correct answers. which two examples may be converted into fossil fuel after being buried under pressure for a long period of time? used cans plants animal waste electronic waste chemicals
Fossil fuel is carbon containing material formed by underground remains of dead plants and animals, including human extract and can be burned as fuels.
What is the procedure of changing fossils into fuel?These fuels are found in earth's crust and contains carbon that burns to produce energy. Its examples can include coal, petroleum, oil, etc.
These fuels are created when the buried plants and animals are subjected to intense heat and pressure. It contains carbon and hydrogen, which burns to produce energy.
Thus, here plants and animal waste can be converted into fossils fuels, while electronic waste and used cans cannot.
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Which of the following is/are most likely to be part of the gastrointestinal reflex pathway? 1. Stretch receptors 2. Neurons of the autonomic nervous system 3. Muscle fibers of the transversus abdominus.
The stretch receptors and neurons of the autonomic nervous system are parts of the gastrointestinal reflex pathway.
What is Gastrointestinal reflex?This is usually stimulated by senses as a result of the presence of stretch receptors and neurons of the autonomic nervous system.
They help in controlling the release of acids in the stomach and also suppresses the release of digestive proteins.
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Enzymes have an attachment site called the __ site for the __ to join
Answer:
Enzymes have an attachment site called the active site for the substrate to join. Consequently, what is catalytic site of enzyme? In biology, the active site is the region of an enzyme where substrate molecules bind and undergo a chemical reaction.
Enzymes have an attachment site called the active site for the substrate to join. Enzymes then convert the substrate into a product and release it from the active site.
What is an enzyme, and how does it function?
The enzyme has an active site where the substrate binds and then forms a noncovalent bond with the enzyme. As a result of this binding, the product is formed by different modifications.
The enzyme has another site apart from the active site, and that is called the allosteric site. This site is occupied by regulators that can regulate the enzyme by enhancing or suppressing the enzyme's activity.
The enzyme is made up of amino acids by the process of translation, but not all enzymes are made up of amino acids. Apart from the polypeptide chain, there are molecules such as zinc, magnesium, etc. at the catalytic site to help enzymes make the product.
Hence, enzymes have an attachment site called the active site for the substrate to join.
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I got two wrong one has to switch the, the other one
Combustion - the burning of fuels and harmful gases in the atmosphere through factories.
decomposition - when skulls and bones are decomposed to give out carbon dioxide.
diffusion - when the the molecules move from a region of higher concentration to a region of lower concentration.
respiration - when person breathes in oxygen and out carbon dioxide.
photosynthesis - is the process where trees make glucose and oxygen with the help of sunlight and mineral and water from soils.
Question 8: How would you describe the effect of different magnitudes of the same factor on the number of
individuals within a population? Use evidence from the graph and table (average values) to support your
answer.
THIS IS EDGE 22 please helppp
Answer:
I don't understand thequestion
The general term that refers to the sum total of all chemical reactions occurring in cells to obtain, release, and use energy is:.
3. Algae makes energy-rich carbon compounds through
photosynthesis.
4. A volcano erupts.
5. Carbon dioxide dissolves in rainwater.
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6. Humans use gasoline to power their cars.
7. Organisms carry out cellular respiration to release
energy from food molecules.
Check Answer
A complementary process in nature either adds (options 3, 6, and 7) or removes ( options 4 and 5) carbon dioxide from the atmosphere.
Complementary processes and it's benefitsThe processes that leads to the addition of carbondioxide back to the atmosphere include the following:
The eruption of volcanoes.Cellular respiration carried out by organisms to release energy from food molecules.The use of gasoline to power carsThe processes that leads to the removal of carbondioxide from the atmosphere include:
The production of energy-rich carbon compounds through photosynthesis.The dissolution of carbondioxide in rainwater.Learn more about photosynthesis here:
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How is it that some people have different DNA than others? What exactly about the DNA is different?
Answer:
Although DNA is univeral, people have different DNA from each other mainly because of mutations, which change our sequences (the order of the nucleotides)
Explanation:
I need help I don't understand
Lophotrochozoan phyla have a lophophore, a specialized structure for _____.
Answer:
suspension feeding
Explanation:
hope this helps.
Which stage in the life cycle of a plant is represented in this picture?
a
Adult plant
b
Seed
c
Seedling
d
Sprout
Answer:
D) Sprout
Explanation:
In general, the frequency of crossing over between two linked genes depends on what?
How far apart they are on the chromosome
The characteristics that the genes code for
Whether the genes are dominant or recessive
The phase of meiosis in which the crossing over occurs
Answer:
Crossovers during meiosis happen at more or less random positions along the chromosome, so the frequency of crossovers between two genes depends on the distance between them.
The closer two genes were to one another on a chromosome, the greater their chance of being inherited together. In contrast, genes located farther away from one another on the same chromosome were more likely to be separated during recombination.
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If two genes are far apart, for example at opposite ends of the chromosome, crossover and non-crossover events will occur in equal frequency. Genes that are closer together undergo fewer crossing over events and non-crossover gametes will exceed than the number of crossover gametes.
Which is not an impact on ecosystems during a drought?
A. Declines in surface water
B. Land subsidence
C. Increased organism population
D. Seawater intrusion
Answer:
c
it is because during drought there will be less water around us.so the no of animals decrease .
Which is a product of photosynthesis and a reactant of respiration?
Calculate the amount of energy needed to increase 0. 500l of water from 25. 0c to 35. 0c
Answer:
yeet
Explanation:
The FBI agents are called "Hoovers," a reference to legendary top-G-man be
Edgar Hoover, but also a clever reference to a vacuum cleaner brand. There
are numerous shots of vacuums being used to gather hair, dead skin cells,
and nails. Why are these materials being collected?
To extract DNA and use DNA fingerprinting to identify who was at
the scene of a crime.
0 To clean up the crime scene because it was really dirty.
To view the specimen under a microscope to determine who was at
the scene of a crime.
O To extract proteins and use protein fingerprinting to identify who was
at the scene of a crime.
We can confirm that the materials being collected at the crime scene are used to extract DNA and use DNA fingerprinting to identify who was at the scene of the crime.
How does DNA help identify suspects?This is due to the fact that the DNA of each individual is unique. Meaning that as long as the FBI has a database to compare it to, they can quickly identify whose DNA it is and confirm their presence at the crime scene.
Therefore, we can confirm that materials being collected at the crime scene are used to extract DNA and use DNA fingerprinting to identify who was at the scene of the crime.
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What is a chromosome like in a city?
The process in which a gas turns back into a liquid is called __________. What word completes the sentencA helium balloon's temperature is raised by 1°C. Will this cause its molecules to move faster or slower?e?
Answer:
the process is called condensation.
the molecules will move faster
why are hooves more advantages for horses in the modern era
Answer:
just search it up on google
Answer:
Hooves are better equipped for environments with plains.
Explanation:
I just got this right on my quiz, hope this helps :)