Activities Quiz

Chapter 16: The Molecular Basis of Inheritance

Activities Quiz

1 .

This is an image of a _____. (Activity: The Hershey-Chase Experiment)

question #1

bacterium

red blood cell

phage

moneran

protist

2 .

Who demonstrated that DNA is the genetic material of the T2 phage? (Activity: The Hershey-Chase Experiment)

Franklin

Hershey and Chase

Meselson and Stahl

Watson and Crick

Darwin and Wallace

3 .

The radioactive isotope ³²P labels the T2 phage's _____. (Activity: The Hershey-Chase Experiment)

DNA

tail

base plate

protein coat

head

4 .

Hershey and Chase used _____ to radioactively label the T2 phage's proteins. (Activity: The Hershey-Chase Experiment)

³⁵S

¹⁴C

²²²Ra

³²P

⁹²U

5 .

After allowing phages grown with bacteria in a medium that contained ³²P and ³⁵S, Hershey and Chase used a centrifuge to separate the phage ghosts from the infected cell. They then examined the infected cells and found that they contained _____, which demonstrated that _____ is the phage's genetic material. (Activity: The Hershey-Chase Experiment)

labeled protein ... DNA

labeled protein .... protein

labeled DNA ... labeled protein

labeled DNA .... protein

labeled DNA ... DNA

6 .

In the accompanying image, a nucleotide is indicated by the letter _____. (Activity: DNA and RNA Structure)

question #6

A

B

C

D

E

7 .

Which of these is a difference between a DNA and an RNA molecule? (Activity: DNA and RNA Structure)

DNA contains uracil, whereas RNA contains thymine.

DNA is a polymer composed of nucleotides, whereas RNA is a polymer composed of nucleic acids.

DNA is double-stranded, whereas RNA is single-stranded.

DNA contains five-carbon sugars, whereas RNA contains six-carbon sugars.

DNA contains nitrogenous bases, whereas RNA contains phosphate groups.

8 .

This is an image of a(n) _____. (Activity: DNA and RNA Structure)

question #8

amino acid

nucleic acid

thiol

nucleotide

none of the above

9 .

The letter A indicates a _____. (Activity: DNA and RNA Structure)

question #9

phosphate group

nucleotide

nitrogenous base

sugar

none of the above

10 .

A nitrogenous base is indicated by the letter _____. (Activity: DNA and RNA Structure)

question #10

A

B

C

D

E

11 .

You can tell that this is an image of a DNA nucleotide and not an RNA nucleotide because you see a _____. (Activity: DNA and RNA Structure)

question #11

thymine nitrogenous base, not a uracil nitrogenous base

sugar with two, and not three, oxygen atoms

double-stranded molecule, not a single-stranded molecule

phosphate group, not a uracil

uracil nitrogenous base, not a thymine nitrogenous base

12 .

Which of these nitrogenous bases is found in DNA but not in RNA? (Activity: DNA and RNA Structure)

adenine

cytosine

guanine

thymine

uracil

13 .

Which of these is(are) pyrimidines? (Activity: DNA and RNA Structure)

question #13

A and B

A, B, and C

B and C

B, C, and D

C, D, and E

14 .

In a nucleotide, the nitrogenous base is attached to the sugar's _____ carbon and the phosphate group is attached to the sugar's _____ carbon. (Activity: DNA and RNA Structure)

1' ... 2'

1' ... 5'

2' ... 3'

1' ... 3'

2' ... 1'

15 .

Nucleic acids are assembled in the _____ direction. (Activity: DNA and RNA Structure)

1' to 5'

2' to 3'

5' to 3'

4' to 5'

5' to 1'

16 .

In a DNA double helix an adenine of one strand always pairs with a(n) _____ of the complementary strand, and a guanine of one strand always pairs with a(n) _____ of the complementary strand. (Activity: DNA and RNA Structure),(Activity: DNA Double Helix), ( Activity: DNA Replication: A Closer Look)

guanine ... adenine

cytosine ... uracil

cytosine ... thymine

thymine ... cytosine

uracil ... cytosine

17 .

Short segments of newly synthesized DNA are joined into a continuous strand by _____. (Activity: DNA Replication: An Overview), (Activity: DNA Replication: A Review)

helicase

DNA polymerase

ligase

primase

single-strand binding protein

18 .

After DNA replication is completed, _____. (Activity: DNA Replication: An Overview), (Activity: DNA Replication: A Closer Look), (Activity: DNA Replication: A Review)

each new DNA double helix consists of one old DNA strand and one new DNA strand

each new DNA double helix consists of two new strands

one DNA double helix consists of two old strands and one DNA double helix consists of two new strands

each of the four DNA strands consists of some old strand parts and some new strand parts

there are four double helices

19 .

The first step in the replication of DNA is catalyzed by _____. (Activity: DNA Replication: A Closer Look), (Activity: DNA Replication: A Review)

helicase

DNA polymerase

ligase

primase

single-strand binding protein

20 .

The action of helicase creates _____. (Activity: DNA Replication: An Overview), (Activity: DNA Replication: A Closer Look), (Activity: DNA Replication: A Review)

primers and DNA fragments

primers and replication bubbles

DNA fragments and replication forks

replication forks and replication bubbles

DNA fragments and replication bubbles

21 .

Why is the new DNA strand complementary to the 3' to 5' strands assembled in short segments? (Activity: DNA Replication: An Overview), (Activity: DNA Replication: A Closer Look), (Activity: DNA Replication: A Review)

the replication forks block the formation of longer strands

DNA polymerase can assemble DNA only in the 3' to 5' direction

DNA polymerase can assemble DNA only in the 5' to 3' direction

it is more efficient than assembling complete new strands

only short DNA sequences can extend off the RNA primers

22 .

The synthesis of a new strand begins with the synthesis of a(n) _____. (Activity: DNA Replication: A Closer Look), (Activity: DNA Replication: A Review)

single-strand binding protein

Okazaki fragment

poly(A) tail

short pieces of DNA

RNA primer complementary to a preexisting DNA strand

23 .

Which of these is responsible for catalyzing the formation of an RNA primer? (Activity: DNA Replication: A Review)

question23

A

B

C

D

E

24 .

An old DNA strand is used as a _____ for the assembly of a new DNA strand. (Activity: DNA Replication: An Overview), (Activity: DNA Replication: A Closer Look), (Activity: DNA Replication: A Review)

complement

primer

template

source of nucleotides

model