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marishachu [46]
2 years ago
11

List how the bases of DNA are paired.​

Biology
1 answer:
erik [133]2 years ago
6 0

Answer:

DNA bases paired by, two strand are held together by hydrogen bonds between the bases

Explanation:

with adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.

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Explanation:

I had to look this up lol. hope it helps tho!

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Acquired immunity involves both a humoral immune response and a cell-mediated immune response. To review the definitions of thes
Katyanochek1 [597]

Answer:

Humoral response.

  • Plasma cells
  • Antibodies
  • B-cells

Cell mediated response.

  • Antigen presenting cells.
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Both.

  • Memory cell

Explanation:

  • Immunity is typically divided into two categories- innate and adaptive.
  • Innate immunity is present since birth and consist of many factors that are relatively non-specific.
  • Adaptive immunity is also known as specific or acquired immunity, is capable of recognizing and selectively eliminating specific foreign antigen.
  • Adaptive immunity displays four characteristic features; Antigen specificity, Immunologic memory, Diversity, Self or non-self recognition.

  • There are two branches of acquired immunity, which involve different sets of participants and different purposes but one common aim: to eliminate the antigen.
  • One arm of adaptive immune response is mediated by B-Cells and circulating antibodies. This is referred to as humoral immunity.

  • The other arm of adaptive immune response is mediated by T-cells, which do not synthesize antibodies but release cytokines that affect other cells.
  • T-cell receptors do not form antibodies  but perform various effector functions when antigen presenting cells bring antigen into the secondary lymphoid organ.
  • T-cells are of two types ; T- helper cell and T-cytotoxic cells.
5 0
3 years ago
Read 2 more answers
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