BioB 4W2 Viruses (divide by 9.7)
Completion
Complete each sentence or statement.
1.
(4 points) Once
the cell recognizes a loose section of DNA _________________________ occurs.
2.
(4 points) After
attaching to the cell, _________________________ occurs - the DNA/RNA is sent into the cell.
3.
(4 points) A(n)
_________________________ is omething that can infect living things and make them
diseased.
4.
(4 points) A
_________________________ is a small strand of DNA that acts like a virus.
5.
(4 points) A
_________________________ is a normal virus, except that it has RNA instead of DNA.
6.
(4 points) The
term "______________________________" means that there are two choices.
7.
(4 points) The
DNA that originated with the virus is referred to as the _________________________.
8.
(4 points) _________________________
9.
(4 points) Once
occurs when the viral protein coat sticks to the cell membrane.
part of the host cell's DNA, the viral DNA causes _________________________ to occur.
10.
(4 points) A
"coat" of protien surrounding DNA or RNA is referred to as a(n) _________________________.
11.
(4 points) For
12.
(4 points) Unlike
13.
(4 points) The
14.
(4 points) A
15.
(4 points) _________________________
a retrovirus, the period of ____ can last for several years.
the lytic infection, a _________________________ has a dormancy period.
term "______________________________" indicates that it unlocks or opens up something.
_________________________ is a small strand of protein that acts like a virus.
is the process of breaking open.
Problem
16.
(4 points) In
17.
(4 points) In
the following group of words, identify which one does not belong in the group and explain why:
incorporation, prion, viroid, virus .
the following group of words, identify which one does not belong in the group and explain why: lysis,
prion, prophage, virus.
18.
(4 points) In
19.
(4 points) In
20.
(1 point) The
the following group of words, identify which one does not belong in the group and explain why:
attachment, incorporation, injection, viroid.
the following group of words, identify which one does not belong in the group and explain why:
dormancy, lysogenic infection, retrovirus, virus .
six diagrams below show different stages of the lytic cycle. Rank each case from first infection to
the killing of the host cell.
Highest 1 _______ 2 _______ 3 _______ 4 _______ 5 _______ 6 _______ Lowest
Or all are the same _______.
Please explain your reasoning:
Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
____ 21.
(1 point) A
lytic infection concludes with the
a. viral DNA entering the host cell’s DNA.
d. production of a prophage.
____ 22.
(1 point) Which
b. use of appendages
____ 23.
(1 point) According
____ 24.
(1 point) Organisms
____ 25.
(1 point) Diagram
c. fossil comparisons
d. DNA/RNA analysis
to biologists, viruses are considered non-living because they cannot do which of the
following 10 life processes?
a. digestion b. reproduce c. take in nutrients d. can’t do any of these
that show similar internal structures, like bones in a human arm and whale fin, but have
different uses for that struture are said to have…
a. no common ancestor b. antomical homology c. homeostasis d. a lucky adaptation
a. injection
(1 point) A
a. virus
____ 27.
c. bursting of the host cell.
current method is the most accurate at determining evolutionary relationships between
organisms?
a. homology
____ 26.
b. production of mRNA.
D shows
b. reproduction
c. attachment
d. assembly
strand of DNA or RNA that acts like a virus
b. retrovirus c. reproduction d. viroid
(1 point) How
old are the oldest known Archaebacteria?
b. 3.9 million yrs c. 500,000 yrs. d. 5000 yrs
a. 1 million yrs.
____ 28.
(1 point) Unlike
lytic viruses, lysogenic viruses do NOT
b. enter the lytic cycle.
a. inject their DNA into the host cell.
c. lyse the host cell quickly.
d. infect host
cells
____ 29.
(1 point) All
viruses are made of proteins and
b. bacteriophages. c. prophages.
a. nucleic acids.
____ 30.
(1 point) A
d. endospores.
viral capsid functions to
a. transcribe viral genes. b. bind the virus to the surface of a host cell.
of the virus. d. destroy a host cell.
c. force a host cell to make copies
____ 31.
(1 point) The
cell bursts open because it is full of too many viruses
b. lysis c. prion d. lytic infection
a. lysogenic infection
Use the following key to identify the organisms' above:
1a The critter has flat sides – go to 3
1b The critter has rounded sides – go to 2
2a The critter is open in the center - Foramen aperire
2b The critter is solid in the center - Implevit circuli
3a The critter is triangular in shape – Triangulum ius
3b The critter is not triangular in shape – go to 4
4a The critter is star shaped – Magis septem
4b The critter is not star shaped – go to 5
5a The critter resembles a plus sign - Geometrica plus
5b The critter has eight sides - Geometrica octa
____ 32.
(1 point) The
object labeled C in the above diagram indicates:
a. Triangulum ius
____ 33.
(1 point) The
c. Foramen aperire
d. Implevit circuli
object labeled E in the above diagram indicates:
a. Magis septem
____ 34.
b. Geometrica plus
(1 point) During
b. Geometrica octa
c. Foramen aperire
d. Triangulum ius
the lytic cycle _____
a. people run into the streets and shout for democracy b. the protein coat of the virus becomes part of the
host cell c. host cell metabolism is used to reproduce the virus d. time stands still
____ 35.
(1 point) The
____ 36.
(1 point) A
DNA of the virus becomes part of the DNA of the host cell
a. injection b. incorporation c. attachment d. dormancy
a. lysis
____ 37.
(1 point) A
strand of protein that acts like a virus
b. lytic infection c. lysogenic infection
d. prion
device used to open up things, including understanding
b. Traits c. Key d. Spatula
a. The game of life
____ 38.
(1 point) The
cell bursts open because it is full of too many viruses
b. Prion c. Lysis d. Lytic Cycle
a. Lysogenic
____ 39.
(1 point) Which
a. vaccination
____ 40.
(1 point) Viral
a. Prion
of the following is most effective at killing or preventing a viral infection?
b. vitamin C c. nothing kills viruses d. antibiotics
cycle that has a dormant period
c. Lytic Cycle d. Lysis
b. Lysogenic