Activities Quiz
1.  

The pointer is indicating the virus's _____. (Activity 18A)
question #1

envelope
genome
mitochondria
capsid
microfilaments


2.  

Viral DNA makes mRNA by the process of _____. (Activity 18A)

replication
infection
translation
lysis
transcription


3.  

The lytic cycle of bacteriophage infection ends with the _____. (Activity 18B)

replication of viral DNA
entry of the phage protein coat into the host cell
assembly of viral particles into phages
the injection of phage DNA into a bacterium
rupture of the bacterium


4.  

The pointer is indicating the _____. (Activity 18B)
question 4

viral envelope
viral nucleic acid genome
bacterium's nucleic acid genome
viral protein coat
bacterium's plasma membrane


5.  

As a result of the lytic cycle, _____. (Activity 18B)

the host cell is not destroyed
the host cell's DNA is destroyed
viral ribosomes are produced
viral DNA is incorporated into host cell DNA
a prophage is created


6.  

Click on the diagram to start the animation. The arrow is indicating _____. (Activity 18C)

host cell DNA
a capsid
an envelope
a Golgi apparatus
a prophage


7.  

Click on the diagram to start the animation. This animation is illustrating an early stage of _____. (Activity 18C)

the lytic cycle
the lysogenic cycle
transcription
translation
lysis


8.  

In the lysogenic cycle _____. (Activity 18C)

host DNA is destroyed and viral DNA is replicated
a bacterium replicates without passing viral DNA to its daughter cells
viral DNA is destroyed and host DNA is replicated
a bacterium divides once before the lytic cycle is initiated
viral DNA is replicated along with host DNA


9.  

Click on the diagram to start the animation. Which of these is the best description of this animation? (Activity 18C)

The lysogenic cycle has begun.
The lytic cycle is making a transition to the lysogenic cycle.
The bacterium has successfully fought off the viral infection.
The lysogenic cycle is making a transition to the lytic cycle.
The host cell has begun to reproduce.


10.  

Cycle A is the _____ cycle and cycle B is the _____ cycle. (Activity 18C)
question #10

lytic ... lysogenic
lytic ... phage
lysogenic ... phage
lysogenic ... lytic
phage ... lysogenic


11.  

The genetic material of HIV consists of _____. (Activity 18D)

single-stranded DNA
single-stranded RNA
double-stranded DNA
double-stranded RNA
none of the above


12.  

Which of these binds to receptor molecules on the host cell membrane? (Activity 18D)
question #12

A
B
C
D
E


13.  

What is the function of reverse transcriptase? (Activity 18D)

It catalyzes the formation of a polypeptide from an RNA template.
It catalyzes the formation of DNA from a polypeptide template.
It catalyzes the formation of RNA from a polypeptide template.
It catalyzes the formation of RNA from a DNA template.
It catalyzes the formation of DNA from an RNA template.


14.  

What is the source of a viral envelope? (Activity 18D)

host cell DNA
prophages
provirus
host cell membrane
viral glycoproteins


15.  

Which of these is reverse transcriptase? (Activity 18D)
question #15

A
B
C
D
E


16.  

Which of these is the viral genome? (Activity 18D)
question #16

A
B
C
D
E


17.  

Click on the diagram to start the animation. What enzyme is responsible for the process seen here? (Activity 18D)

RNA polymerase
DNA polymerase
reverse transcriptase
endonuclease
DNA ligase


18.  

Double-stranded viral DNA is incorporated into a host cell as a _____. (Activity 18D)

promoter
provirus
transposon
lac
homeoboxes


19.  

The operon model of the regulation of gene expression in bacteria was proposed by _____. (Activity 18E)

Watson and Crick
Franklin
Darwin
Jacob and Monod
Mendel


20.  

Which of these is NOT a component of the lac operon? (Activity 18E)

lactose-utilization genes only
promoter only
regulatory gene only
operator only
promoter and operator


21.  

Regulatory proteins bind to _____. (Activity 18E)

the operator
the lactose-utilization genes
the regulatory gene
RNA polymerase
transcription factors


22.  

In the presence of a regulatory protein the lac operon is _____. (Activity 18E)

transcribed
not transcribed
transcribed at a faster than usual rate
is turned on
either transcribed or not transcribed


23.  

Click on the diagram to start the animation. In this animation the blue sphere represents _____. (Activity 18E)

an active repressor
an inactive repressor
lactose
RNA polymerase
mRNA


24.  

Click on the diagram to start the animation. In this animation the orange object represents _____. (Activity 18E)

an active repressor
an inactive repressor
lactose
RNA polymerase
mRNA


25.  

Which of these is a regulatory gene? (Activity 18E)
question #

A
B
C
D
E

   



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