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DerKrebs [107]
3 years ago
10

DNA is composed of repeating structural units called

Biology
2 answers:
Morgarella [4.7K]3 years ago
6 0

Answer: nucleotides

Explanation:  

The basic repeating unit of nucleic acids are known as nucleotides. A nucleotide consists of three distinct chemical groups, a 5-carbon sugar (ribose or deoxyribose), a nitrogen-rich base - (cytosine (C), guanine (G), adenine (A), thymine (T) in DNA or uracil (U) instead of T (in RNA), and phosphate.

bonufazy [111]3 years ago
5 0

Answer:

inner- nucleic acids or nucleotides.

Explanation:

the outer part of dna is a sugar phosphate backbone

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The specific immune response is the immune response provided by cells of adaptive immune system such as B-cells and T-cells.

Explanation:

The immune system or response which protects our body from any specific pathogen or specific antigen is the <u>specific immune response system</u>. It is also known as the adaptive immune system.

The major character of the specif immune response is the <u>recognition of antigens</u>. The specific immune response system or adaptive immune response provided by B-cells and T-cells. B-cells produces special protein molecules called <u>antibodies</u> and T-cells produces cytokines that attack antigens.

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Mandarinka [93]

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The kinetochore of the chromosomes

Explanation:

<em>What could be damaged that is hindering the spindle fibers from attaching to the chromosomes are the kinetochores of the chromosomes.</em>

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