Question

name:period:date:dna and rna structure assignment - student editiona) name structure a and give its function.name:function:b) name the structures labelled g.name:c) state the rule that dictates how the structures labeled g pair.

Explanation:

a) Structure A is the nucleus, which stores the cell's genetic material (DNA) and controls cellular activities by regulating gene expression.
b) Structure G refers to the nitrogenous bases of the DNA molecule.
c) The base pairing rule dictates that adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G) via hydrogen bonds, ensuring complementary strand matching in DNA.

Answer:

a) Name: Nucleus
Function: Stores genetic material and controls cell activities
b) Name: Nitrogenous bases (or DNA nitrogenous bases)
c) In DNA, adenine (A) pairs exclusively with thymine (T), and cytosine (C) pairs exclusively with guanine (G); this complementary base pairing is dictated by Chargaff's rules.