Nucleic Acid EA

Question 1

what is added to a nucleoside to form a nucleotide

Answer 1

phosphate group

Question 2

how many thymine nucleotides are present in a DNA molecule with 214 base pairs and guanine?

Answer 2

107 (wrong)

214
53
71

Question 3

Which is correct about the replication of DNA?

Answer 3

the resulting double helix is composed of an old strand and a new strand

Question 4

What type of RNA has an acceptor arm?

Answer 4

transfer RNA

Question 5

In DNA or RNA, a sugar of one nucleotide connects the phosphate group of another nucleotide forming a backbone through

Answer 5

phosphodiester bond

Question 6

What kind of nitrogenous base is adenine?

Answer 6

purine

Question 7

To what carbon position of deoxyribose does the absence of hydroxyl group?

Answer 7

2nd carbon

Question 8

What type of sugar is the sugar present in the backbone of RNA?

Answer 8

pentose

Question 9

Describing antiparallel orientation of DNA, what is attached in the 5th carbon of deoxyribose?

Answer 9

phosphate group

Question 10

All of the following are components of a nucleotide except

nitrogenous base
amino acid
phosphate group
sugar

Answer 10

amino acid

Question 11

a purine base is attached to a pyrimidine base by means of

Answer 11

hydrogen bond

Question 12

all messenger RNAs are read in what directon

Answer 12

5’ to 3’

Question 13

in DNA or RNa, a sugar of one nucleotide connects the phosphate group of another nucleotide forming a backbone through

Answer 13

phosphodiester bond