science unit 4

Question 1

Which is the function of DNA polymerase?

Answer 1

Reconnects DNA during replication by adding bases

Question 2

What is a change in DNA called?

Answer 2

mutation

Question 3

During DNA replication, what happens in the location marked #2

Answer 3

Bonds are broken

Question 4

According to the central dogma, genetic information typically flows how?

Answer 4

DNA, RNA, Protein

Question 5

DNA holds the information to make _________ .

Answer 5

different kinds of proteins

Question 6

Identify this structure. (The entire thing)

Answer 6

Nucleotide

Question 7

What chemical bond holds DNA bases together?

Answer 7

Hydrogen bonds

Question 8

Which nucleotide parts make up the sides of the DNA ladder? [check all that apply]

Answer 8

Phosphate , Sugar

Question 9

What is the shape of DNA called?

Answer 9

Double Helix

Question 10

What is structure #1?

Answer 10

deoxyribose sugar

Question 11

What is a codon?

Answer 11

a set of 3 bases that codes for an amino acid

Question 12

The base sequence for strand X on this piece of DNA is:

Answer 12

ACTG

Question 13

Which is the second step of DNA replication?

Answer 13

Free floating DNA bases pair up

Question 14

What are the 3 parts of a DNA nucleotide?

Answer 14

deoxyribose, a nitrogen base, a phosphate group

Question 15

Which is the first step of DNA replication?

Answer 15

DNA unzips

Question 16

What is structure #4?

Answer 16

nitrogen base

Question 17

Which is the function of helicase?

Answer 17

Unzips DNA during replication

Question 18

What is structure #3?

Answer 18

phosphate

Question 19

Which nucleotide part(s) make up the rungs of the DNA ladder? [check all that apply]

Answer 19

Base

Question 20

Which is the third step of DNA replication?

Answer 20

Two new DNA strands are formed

Question 21

What is structure #2?

Answer 21

hydrogen bond