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kotegsom [21]
2 years ago
15

______ is a factor of evolution that occurs when natural disasters or organisms moving to another place cause the gene pool to s

hrink
-mutation
-microevolution
-population shrink
-natural selection
Biology
1 answer:
olga55 [171]2 years ago
4 0
Natural selection is a factor of evolution that occurs when natural disasters or organisms moving to another place cause the gene pool to shrink
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Phagocytes are unable to adhere to bacteria that have external capsules concealing their membrane carbohydrates. Our immune syst
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Answer:

The correct answer is c) opsonins

Explanation:

Opsonization is a process in which proteins like antibodies and complement proteins called opsonins bind to the antigens and get it recognized by the phagocyted which destroys the antigen.

Especially when bacteria is having external capsule than it becomes difficult for phagocytes to attach to the capsular surface as the recognition molecule like membrane carbohydrate of antigen is concealed by capsule.

So to encounter this, antibodies like IgG and complement proteins like C3b attaches to the antigen and get it recognized and opsonized by the phagocytes like macrophages. This opsonization causes the destruction of antigen by enzymatic lysis.

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The ability of vibrio cholerae to cause disease depends on a number of factors. What are general requirements for any organism t
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  • The relationship between a host and a pathogen is dynamic, since each modifies the activities and functions of the other
  • The outcome of such a relationship depends on the virulence of the pathogen and the relative degree of resistance or susceptibility of the host, due mainly to the effectiveness of the host defense mechanisms
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When two plants Both tall were crossed they produced some offspring that were dwarves assuming that the height of the plant is c
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Now it is clear that genes are what carry our traits through generations and that genes are made of deoxyribonucleic acid (DNA). But genes themselves don't do the actual work. Rather, they serve as instruction books for making functional molecules such as ribonucleic acid (RNA) and proteins, which perform the chemical reactions in our bodies.Proteins do many other things, too. They provide the body's main building materials, forming the cell's architecture and structural components. But one thing proteins can't do is make copies of themselves. When a cell needs more proteins, it uses the manufacturing instructions coded in DNA.The DNA code of a gene—the sequence of its individual DNA building blocks, labeled A (adenine), T (thymine), C (cytosine) and G (guanine) and collectively called nucleotides— spells out the exact order of a protein's building blocks, amino acids.

Occasionally, there is a kind of typographical error in a gene's DNA sequence. This mistake— which can be a change, gap or duplication—is called a mutation.

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Which form of genetic material initiates RNA interference?
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