Unit 3: DNA

Question 1

Type of molecule DNA is an example of?

Answer 1

Nucleic Acid

Question 2

Building blocks of a DNA molecule

Answer 2

nucleotide

Question 3

What type of bonds hold the two nitrogenous bases together?

Answer 3

Hydrogen Bonds

Question 4

What enzyme put the DNA molecules back into the double helix shape during termination?

Answer 4

helicase

Question 5

What are the three phases of DNA replication?

Answer 5

Initiation

Elongation

Termination

Question 6

The “steps” of a DNA molecule is made up of???

Answer 6

two complementary nitrogen bases held together by hydrogen bonds

Question 7

The sides of a DNA molecule composed of????

Answer 7

alternating sugar and phosphates

Question 8

Which enzyme uses the template to add a second strand of DNA during Elongation?

Answer 8

DNA polymerase

Question 9

Which nitrogenous base is complementary to Thymine?

Answer 9

Adenine

Question 10

What are the 4 bases of DNA?

Answer 10

Adenine

Cytosine

Guanine

Thymine

Question 11

Describe the DNA molecules at the conclusion of DNA replication?

Answer 11

Each DNA molecule is half old and half new.

(semiconservative model)

Question 12

During which phase of the cell cylce does DNA copy?

Answer 12

S phase of interphase

Question 13

Which nitrogenous base is complementary to Guanine?

Answer 13

Cytosine

Question 14

Which enzyme untwists and unzips the DNA?

Answer 14

Helicase

Question 15

Which nitrogenous base is complementary to Adenine?

Answer 15

Thymine

Question 16

Which nitrogenous base is complementary to Cytosine?

Answer 16

Guanine

Question 17

What shape is DNA?

Answer 17

Double Helix

Question 18

What does DNA stand for?

Answer 18

Deoxyribonucleic Acid

Question 19

What process synthesizes DNA?

Answer 19

DNA replication

Question 20

Where is DNA located within the cell

Answer 20

Nucleus

Question 21

Type of sugar found in DNA

Answer 21

deoxyribose