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Question

(a)Name the chemical that cements animal cells.
(b)Name two contractile proteins.
(c)What is the difference between RNA and DNA in their nitrogen bases.

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Solution

(a) Hyaluric acid
(b) Actin and myosin
(c) DNA has thymine nitrogen bases whereas RNA has uracil nitrogen base, in addition to adenine, guanine, cytosine nitrogen bases.

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