AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

STRUCTURE OF NUCLEIC ACIDS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
DNA molecules are composed of long chains of ____
A
amino acids
B
nucleotides
C
fatty acids
D
monosaccharides
Explanation: 

Detailed explanation-1: -A DNA molecule consists of two long polynucleotide chains composed of four types of nucleotide subunits. Each of these chains is known as a DNA chain, or a DNA strand. Hydrogen bonds between the base portions of the nucleotides hold the two chains together (Figure 4-3).

Detailed explanation-2: -DNA and RNA molecules are polymers made up of long chains of nucleotides.

Detailed explanation-3: -Together, a base, sugar, and phosphate are called a nucleotide. Nucleotides are arranged in two long strands that form a spiral called a double helix.

Detailed explanation-4: -Nucleic acids are the class of biochemical compounds that includes DNA and RNA . These molecules are built of small monomers called nucleotides, which bind together in long chains to form polynucleotides . DNA consists of two polynucleotides, and RNA consists of one polynucleotide.

Detailed explanation-5: -DNA is made up of four building blocks called nucleotides: adenine (A), thymine (T), guanine (G), and cytosine (C). The nucleotides attach to each other (A with T, and G with C) to form chemical bonds called base pairs, which connect the two DNA strands.

There is 1 question to complete.