LIfe Science 6B Quiz Practice Question Preview (ID: 58207)
E.
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A virus is pretty simple. It consists of only a nucleic acid, either DNA or RNA, surrounded by a protein coat called a _______.
a) capsid
b) protein sheet
c) T-Cell
d) B-Cell
Viruses are not _____, and scientists debate whether they are even alive.
a) un-dead
b) cells
c) real
d) dangerous
Most viruses are so small that cannot be seen even with a ______ microscope.
a) electron
b) digital
c) light
d) retrograde
Viruses cannot ________ on their own.
a) function
b) infect
c) exist
d) reproduce
To “live” a virus must infect a cell in another organism, called the _______ cell.
a) host
b) helper
c) T
d) latent
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) latent
c) suspended
d) non-living
The viral nucleic acid uses the cell’s own cellular machinery to make more _______.
a) cells
b) proteins
c) viruses
d) membranes
Viruses ______ the cell by bursting it open and escaping to infect new cells.
a) copy
b) replicate
c) enter
d) destroy
Each time the host cell goes through mitosis, the viral DNA is replicated and passed to the _______cells.
a) daughter
b) related
c) dead
d) RNA
There are several things that you can do to limit the number of viruses that infect you. One is to practice good ________.
a) study
b) hygiene
c) focus
d) posture
What is one of the most effective ways to avoid illness?
a) staying inside
b) wearing a mask
c) washing your hands
d) breathing inside air
Eating a balanced, nutritious diet and _____ regularly may limit the number of illnesses you suffer.
a) reading
b) studying
c) crying
d) exercising
A ______ is an injection of a weakened or dead virus.
a) vaccine
b) disease
c) bacteria
d) lysosome
You can _______ some of the most serious viral diseases by being vaccinated against them.
a) contract
b) avoid
c) develop
d) receive
Some diseases are caused by _______ genes.
a) helper
b) defender
c) mutated
d) retro
Gene therapy seeks to use ______ to repair defective genes.
a) bacteria
b) vitamins
c) enzymes
d) viruses
A vaccine stimulates the body to _______ the weakened virus.
a) fight
b) accept
c) receive
d) ignore
During which viral infection cycle does the infected cell burst?
a) lysomatic
b) lytic
c) lysogenic
d) cryogenic
The word lysis means?
a) close
b) clamp
c) burst
d) replicate
Which of the following statements is false about viruses?
a) they cannot reproduce on their own
b) they inject their genetic material into the host cell
c) they are much smaller than human cells
d) they are capable of attacking any cell
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