biology question?

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which of the following statements are true?

A dna has a deoxyribose sugar, while rna has a ribose sugar

b both dna and rna are double stranded

c both dna and rna contain the bases adenine and thymine

d the nitrogenous bases classified as purines include adenine and cytosine

e cystosine pairs with thymine

2007-12-16 10:53:04 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Biology

2 answers

A true
B DNA is double; RNA is single.
C DNA has ATCG; RNA has AUCG
D Purines are AG. (Think "Ag is pure." Like agriculture.)
E C pairs with G. (Put round letters together CG; Put straight line letters together AT.)

2007-12-16 10:58:06 · answer #1 · answered by ecolink 7 · 0⤊ 0⤋

a is true.

2007-12-16 19:01:51 · answer #2 · answered by -_- 4 · 0⤊ 0⤋