ETHC 210 EXAM 6

 Question 1

3 out of 3 points

A mutation is an altered DNA sequence in an organism.

Selected

Answer:

Tru

e

 Question 2

3 out of 3 points

Some genetic diseases like achondroplasia can occur by

spontaneous mutation without a family history of the

disease.

Selected

Answer:

Tru

e

 Question 3

3 out of 3 points

Which of the following is true about the triplet code?

Selected

Answers:

Involves three nucleotides (codons) which specify

one or more amino acids each

64 different codons can be used to make a

protein made of 20 different amino acids

 Question 4

3 out of 3 points

Which of the following is true about mutations?

None of these are correct

answers

 Question 5

3 out of 3 points

A tumor is benign if it grows in place but does not

spread.

Selected

Answer:

Tru

e

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 Question 6

3 out of 3 points

Which of the following is true about oncogenes.

Selected

Answers:

They are genes which have a normal function by

coding for genes that play a role in the cell cycle

but when mutated can cause cancer.

Over 100 oncogenes have been identified

 Question 7

3 out of 3 points

The mutation which causes sickle cell disease can be

classified as a point mutation and also a missense

mutation.

Selected

Answer:

Tru

e

 Question 8

3 out of 3 points

Complex DNA repair mechanisms in many organisms is

a challenge to Darwinian evolution because DNA repair

is complex involving many proteins and Darwinian

evolution would need to evolve all of these proteins

simultaneously.

Selected

Answer:

Tru

e

 Question 9

3 out of 3 points

Cancer metastases are difficulty to detect.

Selected

Answer:

Tru

e

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