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Honors DNA quiz

Total questions: 15

Worksheet time: 19mins

Name
Class
Date
1.
Which of the following units are repeatedly joined together to form a strand of DNA?
a)
amino acids
b)
nucleotides
c)
fatty acids
d)
polysaccharides
2.
Nitrogenous bases are joined by which type of bond?
a)
polar bonds
b)
ionic bonds
c)
covalent bonds
d)
hydrogen bonds
3.
Which 2 molecules form the sides (backbone) of the DNA ladder?
a)
deoxyribose sugar and adenine
b)
deoxyribose sugar and a hydrogen bond
c)
deoxyribose sugar and the nucleus
d)
deoxyribose sugar and phosphate
4.

If the new DNA strand is being built continuously toward the replication fork, that strand represents the ___

a)

lagging strand

b)

template strand

c)

coding strand

d)

leading strand

5.
DNA polymerase is a(n)
a)
lipid
b)
enzyme
c)
sugar
d)
starch
6.
Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG
a)
ATG TGA CAG
b)
TAC ACT GTC
c)
GTA AGT GAC
d)
CAT TCA CTG
7.

Which of the following is NOT a part of the DNA nucleotide?

a)

Deoxyribose sugar

b)

Phosphate group

c)

Nitrogenous base

d)

Lysine amino acid

8.
What is the goal of DNA replication? (choose the most accurate answer)
a)
To destroy the DNA molecule
b)
To make a new copy of DNA from an existing strand of DNA
c)
To make a totally new DNA molecule from nothing
d)
To copy the DNA into RNA
9.

How is the instructions for your traits carried on a DNA molecule?

a)

Sequence of the nitrogen bases

b)

In the Deoxyribose Sugar

c)

In the bond between the phosphate and the sugar

d)

In the phosphate group

10.

Which of the following enzymes adds complementary nucleotides to the DNA template strands?

a)

primase

b)

helicase

c)

topisomerase

d)

DNA polymerase

11.

Why are RNA primers added?

a)

so that primase feels important

b)

DNA polyermase needs a starting point

c)

instructs helicase where to stop unzipping

d)

holds ligase in place

12.
In what phase of the cell cycle does DNA replication take place?
a)
G1
b)
S
c)
G2
d)
M
13.

What are the three components of a nucleotide?

a)

sugar, hydrogen, nitrogen base

b)

sugar, oxygen, nitrogen base

c)

sugar, phosphate, nitrogen base

d)

sugar, phosphate, protein

14.

The picture below shows the steps of DNA replication beginning with step one and ending with step three.


​Because you are reusing the old, or parent, DNA strand DNA replication is said to be

a)

Semi- Conservative

b)

Semi-discontinuous

c)

Continuous

d)

Fully-Conserveative

15.

Which is the second step in DNA replication ?

a)

DNA Helicase unwinds original DNA strand

b)

RNA Primase lays down RNA primer for new nucleotide bases.

c)

DNA polymerase builds new strands by bring in new nucleotide bases.

d)

Ligase knits together fragments on lagging strand