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Y_Kistochka [10]
3 years ago
12

In the immune system, which cell is responsible for recognizing an antigen and producing the activating the b-cell proteins?

Biology
2 answers:
myrzilka [38]3 years ago
7 0
I think a <span>T-helper Cells</span>
zlopas [31]3 years ago
6 0
A.helper cells or d. lymphocytes
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it is a failure of tolerance (self-tolerance) and specificity (recognition)

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Hydrogen bonds :

are the chemical mechanism that governs the complementarity of the bases of DNA. This correspondence is unique thanks to the geometry of the hydrogen donor atoms and the acceptors that form the bases.

The (hydrophobic) bases are stacked inside the double helix of DNA; their plane is perpendicular to the axis of the double helix. The outside (phosphate and sugar) is hydrophilic.

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One purine on one strand necessarily binds to a pyrimidine on the other strand. As a corollary, the number of purine residues is equal to the number of pyrimidine residues.

* A binds to T (by 2 hydrogen bonds).

* G binds to C (via 3 hydrogen bonds: more stable bond: 5.5 kcal vs 3.5 kcal).

What part of the DNA strand do hydrogen bonds hold together?

hydrogen. Covalent bonds occur within each linear strand and strongly bond the bases, sugars, and phosphate groups (both within each component and between components). Hydrogen bonds occur between the two strands and involve a base from one strand with a base from the second in complementary pairing.

Learn more about DNA strand:

brainly.com/question/26466656

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