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DNA and DNA Replication Quiz - 2023

Last updated 3 months ago

24 questions

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Question 1

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Question 2

2.

Question 3

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Question 4

4.

Question 5

5.

Question 6

6.

Question 7

7.

Question 8

8.

Question 9

9.

Question 10

10.

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Adenine and guanine are

double - ringed purines

single - ringed purines

double - ringed pyrimidines

single-ringed pyrimidines

amino acids

Which statement is true?

The hydrogen bonding of cytosine to guanine is an example of complementary base pairing.

Adenine always pairs up with guanine in DNA, and cytosine always teams up with thymine.

Each of the four nucleotides in a DNA molecule has the same nitrogen-containing base.

When adenine base pairs with thymine, they are linked by three hydrogen bonds.

In the DNA of all species, the amount of purines never equals the amount of pyrimidines.

Each DNA strand has a backbone the consists of alternating 

purines and pyrimidines

nitrogen-containing bases

hydrogen bonds

sugar and phosphate 

amines and purines

The appropriate adjective to drescribe DNA replication is

nondisruptive

semiconservation 

progressive

natural

lytic

Replication of DNA

produces RNA molecules

produces only new DNA

produces two molecules, each of which is half- new and half - old DNA joined lengthwise to each other. 

generates excessive DNA, which eventually causes the nucleus to divide. 

is too complex to characterize 

This is an image of a(n) ______. 

amino acid

nucleic acid

DNA

nucleotide

The letter A indicates a ________. 

phosphate group

nucleotide

nitrogen base

sugar

none of the above

A nitrogen base is indicated by the letter

a

b

c

d

Nucleic acids are assembled in the ______ direction.

1' ....5'

2'... 3'

5'...3'

4'...5'

5'...1'

Match the following enzyme to its description. 

helicase

Joins the 3’ end of DNA that replaces primer to rest of leading strand and joins Okazaki fragments of lagging strand

DNA ligase

Removes RNA nucleotides of primer from 5’ end and replaces them with DNA nucleotides

Primase

Binds to and stablizes single stranded DNA until it can be used as a template.

DNA polymerase I

Synthesizes an RNA primer at 5’ end of leading strand and of each Okazaki fragment of lagging strand

Single Stranded Binding Proteins

Using parental DNA as a template, synthesizes new DNA strand by covalently adding nucleotides to the 3’ end of a pre existing DNA strand or RNA primer.

DNA polymerase III

Unwinds parental double helix at replication forks

Question 11

11.

Question 12

12.

Question 13

13.

Question 14

14.

Question 15

15.

Question 16

16.

Question 17

17.

Question 18

18.

Question 19

19.

Question 20

20.

Question 21

21.

Question 22

22.

Question 23

23.

Question 24

24.

Identify the following structures of DNA

hydrogen bonds

deoxyribose

purine

pyrimidine

3' end

5' end

Phosphate group

Identify the following structures of DNA

hydrogen bonds

deoxyribose

purine

pyrimidine

3' end

5' end

Phosphate group

Identify the following structures of DNA

hydrogen bonds

deoxyribose

purine

pyrimidine

3' end

5' end

Phosphate group

Identify the following structures of DNA

hydrogen bonds

deoxyribose

purine

pyrimidine

3' end

5' end

Phosphate group

Match the following enzyme to its description

DNA ligase

DNA polymerase I

Single stranded binding proteins

DNA primase

DNA polymerase III

Helicase

Primer

Okazaki fragment

Lagging strand 

Leading strand

Match the following enzyme to its description

DNA ligase

DNA polymerase I

Single stranded binding proteins

DNA primase

DNA polymerase III

Helicase

Primer

Okazaki fragment

Lagging strand 

Leading strand

Match the following enzyme to its description

DNA ligase

DNA polymerase I

Single stranded binding proteins

DNA primase

DNA polymerase III

Helicase

Primer

Okazaki fragment

Lagging strand 

Leading strand

Match the following enzyme to its description

DNA ligase

DNA polymerase I

Single stranded binding proteins

DNA primase

DNA polymerase III

Helicase

Primer

Okazaki fragment

Lagging strand 

Leading strand

Match the following enzyme to its description

DNA ligase

DNA polymerase I

Single stranded binding proteins

DNA Primase

DNA polymerase III 

Helicase

Primer

Okazaki fragment

Lagging strand

Leading strand

Match the following enzyme to its description

DNA ligase

DNA polymerase I

Single stranded binding proteins

DNA Primase

DNA polymerase III 

Helicase

Primer

Okazaki fragment

Lagging strand

Leading strand

Match the following enzyme to its description

DNA ligase

DNA polymerase I

Single stranded binding proteins

DNA Primase

DNA polymerase III 

Helicase

Primer

Okazaki fragment

Lagging strand

Leading strand

Match the following enzyme to its description

DNA ligase

DNA polymerase I

Single stranded binding proteins

DNA Primase

DNA polymerase III 

Helicase

Primer

Okazaki fragment

Lagging strand

Leading strand

Match the following enzyme to its description

DNA ligase

DNA polymerase I

Single stranded binding proteins

DNA Primase

DNA polymerase III 

Helicase

Primer

Okazaki fragment

Lagging strand

Leading strand

Match the following enzyme to its description

DNA ligase

DNA polymerase I

Single stranded binding proteins

DNA Primase

DNA polymerase III 

Helicase

Primer

Okazaki fragment

Lagging strand

Leading strand