Question 1

What is the difference between a polynucleotide and an oligonucleotide?

Accepted Answer

The answer of What is the difference between a polynucleotide...

Question 2

If 15% of the nitrogenous bases in a sample of DNA from a particular organism is thymine, what percentage should be cytosine?

Accepted Answer

A)  15% 
B)  30% 
C)  35% 
D)  40% 
E)  70%

Question 3

Avery et al. (1944) determined that DNA is the genetic material in T2 bacteriophage.

Accepted Answer

A) True 
 B)False

Question 4

During the polymerization of nucleic acids, covalent bonds are formed between neighboring nucleotides. Which carbons are involved in such bonds?

Accepted Answer

The answer of During the polymerization of nucleic acids, covalent...

Question 5

The transforming principle discovered by Griffith is RNA.

Accepted Answer

A) True 
 B)False

Question 6

The classic Hershey and Chase (1952) experiment that offered evidence in support of DNA being the genetic material in bacteriophages made use of which of the following labeled component(s)?

Accepted Answer

A)  phosphorus and sulfur 
B)  nitrogen and oxygen 
C)  tritium 
D)  hydrogen 
E)  None of the answers listed are correct.

Question 7

Consider the structure of double-stranded DNA. When DNA is placed into distilled water, it denatures; however, by adding NaCl, the DNA renatures. Why?

Accepted Answer

The answer of Consider the structure of double-stranded DNA. When...

Question 8

The basic structure of a nucleotide includes ________.

Accepted Answer

A)  amino acids 
B)  tryptophan and leucine 
C)  base, sugar, and phosphate 
D)  mRNA, rRNA, and tRNA 
E)  phosphorus and sulfur

Question 9

List two major differences between RNA and DNA at the level of the nucleotide.

Accepted Answer

The answer of List two major differences between RNA and...

Question 10

What was the Avery et al. (1944) contribution to the understanding of molecular biology?

Accepted Answer

The answer of What was the Avery et al. (1944)...

Exam 10: DNA Structure and Analysis