AP BIOLOGY

LABORATORY REVIEW

MOLECULAR BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
DNA consists of two antiparallel strands of nucleotide chains held together by
A
peptide bonds
B
ionic bonds
C
hydrogen bonds
D
covalent bonds
Explanation: 

Detailed explanation-1: -Genetic information is carried in the linear sequence of nucleotides in DNA. Each molecule of DNA is a double helix formed from two complementary strands of nucleotides held together by hydrogen bonds between G-C and A-T base pairs.

Detailed explanation-2: -DNA is composed of two strands of nucleotides held together by hydrogen bonding.

Detailed explanation-3: -DNA is a double helical molecule made of two antiparallel strands of nucleotides which is linked by hydrogen bonds between complementary base pairs.

Detailed explanation-4: -The 2 strands of DNA are held together by hydrogen bonds between N2 bases.

Detailed explanation-5: -Explanation: Antiparallel strands of a DNA molecule means that the phosphate groups at the start of two DNA strands are in opposite position (pole). DNA (Deoxyribonucleic Acid) is composed of two polynucleotide strands (the polymers of nucleotides), which forms what looks like a ladder.

There is 1 question to complete.