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LIfe Science 6B Quiz Practice
Test Description: E
Instructions: Answer all questions to get your test result.
1) A virus is pretty simple. It consists of only a nucleic acid, either DNA or RNA, surrounded by a protein coat called a _______.
A
T-Cell
B
B-Cell
C
capsid
D
protein sheet
2) Viruses are not _____, and scientists debate whether they are even alive.
A
dangerous
B
un-dead
C
cells
D
real
3) Most viruses are so small that cannot be seen even with a ______ microscope.
A
electron
B
light
C
digital
D
retrograde
4) Viruses cannot ________ on their own.
A
exist
B
reproduce
C
function
D
infect
5) To “live” a virus must infect a cell in another organism, called the _______ cell.
A
T
B
helper
C
host
D
latent
6) Some viruses do not kill the host cell immediately. Instead the viral DNA remains inactive for months or even years. This type of virus is called a ______virus.
A
latent
B
dead
C
non-living
D
suspended
7) The viral nucleic acid uses the cell’s own cellular machinery to make more _______.
A
cells
B
proteins
C
viruses
D
membranes
8) Viruses ______ the cell by bursting it open and escaping to infect new cells.
A
destroy
B
replicate
C
enter
D
copy
9) Each time the host cell goes through mitosis, the viral DNA is replicated and passed to the _______cells.
A
dead
B
RNA
C
daughter
D
related
10) There are several things that you can do to limit the number of viruses that infect you. One is to practice good ________.
A
focus
B
hygiene
C
study
D
posture
11) What is one of the most effective ways to avoid illness?
A
breathing inside air
B
staying inside
C
washing your hands
D
wearing a mask
12) Eating a balanced, nutritious diet and _____ regularly may limit the number of illnesses you suffer.
A
reading
B
exercising
C
studying
D
crying
13) A ______ is an injection of a weakened or dead virus.
A
vaccine
B
lysosome
C
bacteria
D
disease
14) You can _______ some of the most serious viral diseases by being vaccinated against them.
A
receive
B
avoid
C
contract
D
develop
15) Some diseases are caused by _______ genes.
A
defender
B
retro
C
mutated
D
helper
16) Gene therapy seeks to use ______ to repair defective genes.
A
vitamins
B
enzymes
C
viruses
D
bacteria
17) A vaccine stimulates the body to _______ the weakened virus.
A
ignore
B
accept
C
receive
D
fight
18) During which viral infection cycle does the infected cell burst?
A
lysomatic
B
lytic
C
cryogenic
D
lysogenic
19) The word lysis means?
A
replicate
B
burst
C
close
D
clamp
20) Which of the following statements is false about viruses?
A
they are capable of attacking any cell
B
they cannot reproduce on their own
C
they are much smaller than human cells
D
they inject their genetic material into the host cell
*select an answer for all questions
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