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mel-nik [20]
3 years ago
10

The function of antibodies is to A. inject toxins into living pathogens. B. mark pathogenic cells for destruction. C. act as Tol

l-like receptors. D. release perforins to disrupt infected cells. E. secrete cytokines that attract macrophages to infection sites.
Biology
1 answer:
Liono4ka [1.6K]3 years ago
6 0

Answer:

Mark pathogenic cells for destruction. (Ans. B)

Explanation:

Antibodies are generated by the plasma cells, and once these secreted, they attach quickly to the surface of the toxin and stop the toxin from infecting the normal body cell by blocking key extracellular sites.

Antibodies also help to mark pathogens for destruction by the help of macrophages or neutrophils and they are known as phagocytic cells because they are highly excited to macro-molecules complexed with antibodies.

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In a fox population, the allele frequency of a gene for red fur changes from 20 percent to 30 percent.What can be concluded abou
Leni [432]

Answer:

The correct answer would be B. the population is evolving.

It can be explained with the help of natural selection. It is a natural phenomenon by which organisms which are better adapted to the changing environment have better chances to survive and reproduce.

It leads to a change in the allele frequency of that trait in a population.

For example, in the given population, the allele frequency of red fur increases from 20 to 30 percent. That means the population is evolving to adapt to the changing environment.

7 0
3 years ago
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If the Laffite family deposits $8500 in a savings account at 6.75% interest, compounded continuously, solve for the amount of mo
Ksenya-84 [330]
<span>The answer to your question is:
</span>8500* e^{0.675*25}
<span>
I hope that this is the answer that you were looking for and it has helped you.
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4 0
3 years ago
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Which of the following is/are true?
Softa [21]

Answer: Only Options A, C and E are correct

A) Sympatric speciation is best described as a random event that disrupts the allele frequencies in a population

C) Sympatric speciation does not require geographic isolation.

E) Sympatric speciation can be due to sexual(mate) selection

Explanation:

Sympatric speciation is a random or naturally occurring event whereby organisms of the same species:

> live in the same territory or nearby territories ( i.e not living in isolation)

> DO NOT interbreed, but select a sexual mate from a much diverse territory which results in an uneven gene flow or disruption of alleles among the population of same species of the parents organisms.

3 0
3 years ago
1.17) What is one question you have about the study of life?
Margaret [11]

Answer:

What is one question you have about the study of life? Talk about the meaning of life and inquire about the way in which human beings. From philosophy this has to do with freedom

What is one question you have about biology?

What is the cell?

Who was Robert Hooke?

What is the difference between prokaryotic and eukaryotic cells?

And the difference between plant and animal cells?

Who was Louis Pasteur?

What does the theory of biogenesis say?

What do you mean "sterilized"?

Explanation:

3 0
3 years ago
As you may know, people’s physical and emotional health interact: One can affect the other. The characters in "In Another Countr
Margaret [11]

Answer:

To preserve their mental health, the characters must keep in mind that all suffering is temporary and although it is difficult, they will overcome this situation. What can help characters deal with their situations is by reasoning about the following questions:

"What led me to this situation?"

"What are my limitations in dealing with this type of problem?"

"How could I have acted to minimize the impacts of suffering?"

"Would any action by me prevent these disorders?"

Explanation:

Every time that the characters evaluate themselves and correct their behaviors, they will be able to follow the emotional evolution that will help them to deal with all their suffering. In this journey, each one has a different rhythm. In fact, we are different in almost every aspect of our physical and mental makeup. The variations in intelligence are enormous and also those related to aggressiveness, intensity of fears and the ability to deal with them. It would not be fair, therefore, to tell a character (or a person) that he is suffering from "nonsense". What is small for one may be large for the other. Underestimating the pain of others is not synonymous with help, but a lack of empathy.

We do have a duty and obligation, in the name of our own well-being, to try to get rid of our pains as quickly as possible, but that does not mean not feeling them. Some people do it more easily, while others "fall in love" with the problem and think about it in a recurrent and obsessive way. They silence the word, but the mind goes on chattering.

4 0
3 years ago
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