Question 19 of 40 25 25 points some scientists have

Question 19 of 40
2.5/ 2.5 Points
Some scientists have proposed that the earliest forms of life may have existed in an “RNA World”
where RNA was both the genetic material and responsible for enzymatic activity. Imagine that you
have recreated such a life form. What would demonstrate that RNA, but not protein or DNA, is
necessary and sufficient for these functions?

A. The organism lives and replicates despite RNase and DNase treatment, but the organism

APUS BIOL133 Exam 3_Chapters 12-15
dies when treated with protease.

B. The organism lives and replicates despite protease and DNase treatment, but the
organism dies when treated with RNase.

C. The organism lives and replicates despite protease treatment, but the organism dies when
treated with DNase and RNase.

D. The organism lives and replicates despite DNase treatment, but the organism dies when
treated with RNase and protease.
Feedback:Learning Objective: Analyze the process of DNA replication
Question 20 of 40
0.0/ 2.5 Points
What is a major difference between DNA polymerase I and DNA polymerase III?

APUS BIOL133 Exam 3_Chapters 12-15
direction

D. DNA polymerase I synthesizes DNA in the 5 ׳ to 3 ׳ direction and DNA polymerase III
synthesizes on lagging strands
Feedback:Incorrect-
Learning Objective Text: Discuss the role of different enzymes and proteins in supporting this
process
Question 21 of 40
2.5/ 2.5 Points
Combination of alleles that independently assort is usually higher than the number of chromosomes
because

APUS BIOL133 Exam 3_Chapters 12-15
Feedback:Correct
Question 22 of 40
2.5/ 2.5 Points
An experiment started with
15
N
15
N DNA. After two generations in
14
N medium, E. coli will have
N
N
14
N
N
Feedback:Correct

APUS BIOL133 Exam 3_Chapters 12-15
Question 23 of 40
2.5/ 2.5 Points
Why do bacteria not need telomerase?

A. The lifespan of bacteria are short

B. Bacteria do not go through cell division

C. Bacteria have a similar functioning enzyme

D. Bacteria have circular DNA

E. Bacteria cannot produce RNA
Feedback:Correct