Exam 3 REAL Clicker Q's

Question 1

E. 40%

Answer 1

C. 30%

Question 2

The figure is a DNA strand with 3’ end on top and 5’ end on bottom.

Answer 2

on the top you can only add nueclotides to 3’ end

Question 3

D. 5’ CTG 3’

Answer 3

D. 5’ CTG 3’

Question 4

E. helicase activity

Answer 4

B. DNA Polymerase 1 activity

Question 5

D. neither strands

Answer 5

B. the lower strand

Question 6

FALSE

Answer 6

TRUE

Question 7

C. RNA Polymerase

Answer 7

A. a sequence in DNA

Question 8

C. a codon

Answer 8

B. a transcription factor

Question 9

C. 900 nucleotides

Answer 9

B. 900 nucleotides

Question 10

What is the minimum length of a mRNA to encode a polypeptide 300 amino acids long?

Answer 10

something greater than 900

Question 11

D. proteins would contain incorrect amino acids

Answer 11

D. proteins would contain incorrect amino acids

Question 12

C. longer than

Answer 12

C. longer than

Question 13

D. transfer of the polypeptide chain from the tRNA in the A site to the tRNA in the P site

Answer 13

A. translocation - movement of the ribosome down so the tRNA can be kicked out

Question 14

D. the fact that codons are three nucleotides long

Answer 14

A. the degeneracy of the genetic code

Question 15

What makes a liver cell different from a pancreatic cell?

Answer 15

Differannt patterns of gene expressions not because they have diff. genes or DNA

Question 16

True or False

Answer 16

TRUE

Question 17

Histone acetylclases are the enzymes that add acetyl groups to histones. If a histone acetylase became overactive one would predict that?

Answer 17

a chromatin would be relaxed, transcriptionally competent state

Question 18

D. by controlling the rate of protein

Answer 18

B.after transcription but before translation

Question 19

E. an intron

Answer 19

C. an enhancer

Question 20

3. differentiated

Answer 20

B. determined

Question 21

FALSE

Answer 21

FALSE

Question 22

E. the ribosome

Answer 22

C. reverse transcriptase

Question 23

B. ekaryotes with larger genomes tend to be more complex

Answer 23

A. the number of genes per unit of length of DNA varies widely among eukatoryotes

Question 24

C. gene divergence

Answer 24

C. gene divergence

Question 25

B. pro, euk, photo, multi euk

Answer 25

A. pro, photo euk, multicell, euk

Question 26

Most prokaryotes are how big?

Answer 26

1-3 micormeters

Question 27

D. Archae and Bacertia

Answer 27

D. Archae and Bacertia

Question 28

App. what percentage of all bacteria are pathogenic?

Answer 28

less than 1%

Question 29

A photoautotroph gets:

Answer 29

Energy from light and carbon from co2

Question 30

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Answer 30

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