Question

Question7:Indicate whether the following statements are TRUE or FALSE. If a statement is false, explain why it is false.A. DNA molecules, likeproteins, consist of a single, long polymeric chain that is assembled from small monomeric subunits.B. The polarity of a DNA strand results from the polarity of the nucleotide subunits.C. There are five different nucleotides that become incorporated into a DNA strand.D. Hydrogen bonds between each nucleotide hold individual DNA strands together.

Answer 1

Answer:

A. FALSE

B. TRUE

C. FALSE

D. FALSE

Explanation:

A. DNA molecules consist of two strands of a helical chain of nucleotides, which are the monomer subunits of DNA.

B. Nucleotide subunits that make up a DNA strand are polar due to the presence of the phosphate group per subunit.

C. There are only four different nucleotides in a DNA strand. The nucleotides are different from each other based on the four nitrogen bases. These are adenine, thymine, cytosine, and guanine.

D. Hydrogen bonds are present between the nitrogen bases of nucleotides from anti-parallel DNA strands. Phosphodiester bonds, on the other hand are present between nucleotides of an individual DNA strand thus holding one DNA molecule together.