Fossilization

Question 1

What is the shape of a DNA molecule?

Answer 1

Spiral staircase (double helix)

Question 2

DNA is made up of repeating units called:

Answer 2

Nucleotides

Question 3

A change in the DNA sequence is called:

Answer 3

Mutation

Question 4

Which of the following can cause a mutation?

Answer 4

All of the above

Question 5

What is a gene?

Answer 5

A segment of DNA that codes for a trait

Question 6

Which base pairs with adenine (A) in DNA?

Answer 6

Thymine

Question 7

Which of the following is NOT a possible result of a mutation?

Answer 7

Longer lifespan for every species

Question 8

What is the full name of DNA?

Answer 8

Deoxyribonucleic acid

Question 9

Which nitrogen bases pair together in DNA?

Answer 9

A–T and C–G

Question 10

Mutations can be passed to offspring if they occur in:

Answer 10

Reproductive cells

Question 11

What role does DNA play in heredity?

Answer 11

Stores genetic information

Question 12

A mutation that gives a giraffe a longer neck, helping it survive, is:

Answer 12

An adaptation

Question 13

Which process copies DNA to make an identical strand?

Answer 13

Replication

Question 14

A beneficial mutation can become more common in a population through:

Answer 14

Natural selection

Question 15

Which of the following carries instructions for traits?

Answer 15

DNA

Question 16

If a mutation helps an organism survive and reproduce, what is likely to happen?

Answer 16

The mutation becomes common

Question 17

What is the result of a mutation that changes the shape of a protein?

Answer 17

The protein might not work properly

Question 18

What are chromosomes made of?

Answer 18

DNA and proteins

Question 19

Which of the following is true about all mutations?

Answer 19

They are random changes in DNA

Question 20

Which of the following statements is true?

Answer 20

Mutations create genetic variation

Question 21

What is a likely result of an animal not adapting to a new environment?

Answer 21

It may become extinct

Question 22

Which organism is most likely to become fossilized?

Answer 22

A clam buried in the sand

Question 23

What is the best condition for fossil formation?

Answer 23

Rapid burial and no oxygen

Question 24

What do we call the preserved remains or traces of once-living things?

Answer 24

Fossil

Question 25

A cast is formed when minerals fill a mold. (True/False)

Answer 25

True

Question 26

Which of the following is NOT a type of fossilization?

Answer 26

Weathering

Question 27

Natural selection favors traits that:

Answer 27

Increase the chance of reproduction and survival

Question 28

What factors affect whether an adaptation is passed to future generations?

Answer 28

Survival and reproduction success

Question 29

What is one reason a species might adapt?

Answer 29

To better survive in its environment

Question 30

What can studying fossils teach us?

Answer 30

Changes in life over time

Question 31

A species of frog only survives in clean water. If pollution increases, what could happen to the population?

Answer 31

It may become extinct

Question 32

Which method helps determine the actual age of a rock?

Answer 32

Absolute dating

Question 33

Why is it important that index fossils existed for only a short time?

Answer 33

To help correlate the age of rock layers

Question 34

Explain why two fossils found in the same rock layer are likely from the same time period.

Answer 34

They were deposited at the same time