Adenine always pairs with Thymine, and Cytosine always pairs up with Guanine in DNA. When dealing with RNA, however, Uracil replaces Thymine. So in RNA, A pairs with U and C pairs with G. (just a fun fact) :)
Cell Membrane is the answer
<span>Proteins are large bio-molecules that contains
one or more long chains of amino acid remains. Its source is meat, poultry, seafood
and such; the amount of protein that is recommended for the endurance of
athletes on a relative basic is 1.2-1.4 grams per day.</span>
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The answer would probably be be D
