Chapter 14 & 15 Practice

The scientists who demonstrated that DNA replication is semiconservative

• Watson and Crick

• Meselson and Stahl

• Hershey and Chase

• Avery, MacLeod, and McCarty

• Franklin and Wilkins

Label the structures and carbons of the DNA nucleotide

a

b

c

d

e

f

g

h

4'

3'

Nitrogenous base

1'

2'

Pentose sugar

5'

Phosphate group

Tags

NGSS.HS-LS1-1

In double-stranded DNA, adenine is joined to thymine and cytosine is joined to guanine by

Which of the following base pairs is/are correct?

• A - T

• C - A

• G - C

• T - A

• T - C

The 3' end of one DNA fragment is linked to the 5' end of another fragment by means of

• DNA ligase

• helicase enzymes

• hydrogen bonds

• complementary base pairing

• topoisomerase

The direction of synthesis of DNA is

• 5' → 3'

• 3' → 5'

• 3' → 3'

• 5' → 5'

• variable

The genetic code is carried in the

• DNA backbone

• sequence of bases

• Okazaki fragments

• histones

• arrangement of 5',3' phosphodiester bonds

Tags

NGSS.HS-LS3-1

Chargaff's rules state or infer that

• [A] = [T]

• [G] = [C]

• ratio of T to A = 1

• ratio of G to C = 1

Deoxyribose and phosphate are joined in the DNA backbone by

• one of four bases

• purines

• pyrimidines

• phosphodiester bonds

• the 1' carbon of sugar

The covalent bonds that join amino acids together are known as​​ (a)  

• hydrogen bonds
• peptide bonds
• carbon bonds
• amino bonds