DNA 2

Question 1

Mitochondrial DNA (mtDNA) contains _ genes needed for mitochondria to function

Answer 1

37

Question 2

_ is inherited from both parents

Answer 2

Nuclear DNA

Question 3

mtDNA is inherited only from

Answer 3

The mother

Question 4

By analyzing mtDNA from samples of thousands of people _

Answer 4

Found a single common female ancestor for everyone alive today

Question 5

In forensic science, mtDNA used to analyze old _ that have low DNA content (3)

Answer 5

Teeth

Bones

Hair

Question 6

1/3 of genes in mtDNA provide instructions for making _

Answer 6

Enzymes involved in creating ATP

Question 7

Most genes provide instructions for making (2)

Answer 7

rRNA

tRNA

Question 8

When a cell divides, DNA in nucleus will be _ so it can be replicated

Answer 8

Unzipped

Question 9

Long DNA strand tightly coiled together with package proteins called _

Answer 9

Histones

Question 10

DNA tightly coiled around histones forms a _

Answer 10

Chromosome

Question 11

Thymine (yellow) always bonds with _

Answer 11

Adenine (red)

Question 12

_ joins two bases (adenine, thymine, etc.)

Answer 12

Weak hydrogen bond

Question 13

Backbone of each strand is made up of alternating _ molecules (2)

Answer 13

Sugar

Phosphate

Question 14

_ is shaft _ is end of shaft

Answer 14

Rung

Base

Question 15

Four _ pair up to form molecule’s rungs

Answer 15

Possible nitrogen bases

Question 16

Guanine always binds with _

Answer 16

Cytosine

Question 17

Guanine color _

Answer 17

Blue

Question 18

Cytosine color _

Answer 18

Green

Question 19

DNA stands for _

Answer 19

Deoxyribonucleic acid

Question 20

DNA encodes instructions for making large molecules called _

Answer 20

Proteins

Question 21

If all DNA molecule in human body was end to end it would stretch farther than _

Answer 21

Distance from sun to Pluto

Question 22

Sun to Pluto distance

Answer 22

3.9 billion miles (6.2 billion km)