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