ASU BIO 340 exam 3 Questions and Answers 100% Pass

ASU BIO 340 exam 3 Questions and
Answers 100% Pass


Describe the experiments that led to the discovery of DNA as the

hereditary meterial -

CORRECT ANSWER: 1. The bacterial transforming principle by

Griffith:

found that nonvirulent R-strain takes up a transforming principle from

the virulent heat-killed S-strain. This allowed the R-strain to transform

into S-strain becoming virulent.

2. Avery-MacLeod-McCarty Experiment:

S-strain filtrate was made and treated with RNase, Dnase, Protease, and

Carboase. Those were then treated with the R-strain and found that the

only dample containing both both strains was the one with Dnase.

3. The Hershey Chase experiment:

Officially concluded that DNA was genetic material from work with

phages.

,QUESTION: What were the conclusions for the three experiments that

led to DNA being the hereditary meterial? -

CORRECT ANSWER: 1. The bacterial transforming principle by

Griffith:

found that nonvirulent R-strain takes up a transforming principle from

the virulent heat-killed S-strain. This allowed the R-strain to transform

into S-strain becoming virulent.

2. Avery-MacLeod-McCarty Experiment:

DNA is the transforming factor

3. The Hershey-Chase Experiment:

DNA is the genetic material




QUESTION: What are the building blocks of DNA -

CORRECT ANSWER: nucleotides




QUESTION: What are nucleotides composed of? -

, CORRECT ANSWER: 5 carbon sugar, phosphate group, nitrogenous

base

A, T, G, C




QUESTION: Nucleotides combine via___ -

CORRECT ANSWER: covalent bonds




QUESTION: Nucleotides are assembled into polynucleotide chains by:

a. endonuclease

b. DNA pol.

c. RNA pol.

d. helicase -

CORRECT ANSWER: b. DNA pol




QUESTION: Who determined that structure of DNA? -

CORRECT ANSWER: Crick and Watson