Book A, Ch 2 Test Review Question Preview (ID: 21243)
Bacteria And Viruses.
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Which of the following is NOT a common shape of bacteria?
a) spirilla
b) cocci
c) bacilli
d) crystal
A cell with no nucleus is called a(n)
a) prokaryote
b) endospore
c) host
d) eukaryote
What is the only power objective on the microscope with which you should use the coarse adjustment knob?
a) high power (blue/40x on our microscopes)
b) medium power (yellow/10x on our microscopes)
c) low power (red/4x on our microscopes)
d) you can use the coarse adjustment with any objective
Which of the following is NOT a common shape of viruses?
a) crystal
b) cocci
c) cylinder
d) sphere
Which of the following is NOT a true statement about binary fission?
a) The cell’s DNA is copied before cell division
b) As the cell grows, the loops of DNA become separated
c) The DNA and its copy attach to the inside of the cell membrane
d) The new bacterium is genetically different from the parent bacterium
Which of the following is NOT a true statement about viruses?
a) Viruses do not have cytoplasm
b) Viruses obtain nutrients from their hosts’ cells
c) Viruses contain genetic material
d) Viruses cannot live on their own
Bacteria are important to the planet as
a) decomposers of dead organic matter
b) processors of nitrogen
c) makers of medicine
d) All of the above
Bacteria are used for all of the following EXCEPT
a) making certain foods
b) making antibiotics
c) preserving fruit
d) cleaning up oil spills
A way to prevent viral infections is through
a) vaccinations
b) genetic engineering
c) antibiotics
d) bioremediation
What organisms can live where nothing else lives?
a) viruses
b) bacteria
c) cyanobacteria
d) archaea
All bacteria have
a) one cell
b) two cells
c) three cells
d) four or more cells
Which of the following is an example of bioremediation?
a) using microorganisms to clean up an oil spill
b) using bacteria to make yogurt
c) creating plants that are resistant to bacteria
d) adding nitrogen-fixing bacteria to the soil before planting crops
Which of the following is an example of genetic engineering?
a) using microorganisms to clean up an oil spill
b) using bacteria to make yogurt
c) creating plants that are resistant to bacteria
d) adding nitrogen-fixing bacteria to the soil before planting crops
Why do you think some people have digestive problems after they take a course of antibiotics?
a) the antibiotics killed the good bacteria in their gut
b) the antibiotics are thick medicines that upsets their stomachs
c) the antibiotics were made with bacteria that make the people sick
d) the antibiotics weakened the people's immune systems so viruses could infect them
What is one harmful outcome of using soaps that contain chemicals that kill bacteria?
a) They may dry your skin out
b) They may kill helpful bactria
c) They may kill viruses your body needs
d) They may smell unpleasant
Viruses do not eat, break down food, or use oxygen.
a) true
b) false
c)
d)
Nitrogen-fixing bacteria take nitrogen from the soil and change it to a form in the air that plants' leaves can absorb and use.
a) true
b) false
c)
d)
If the microscope you are using has an eyepiece with 10x power and you are using an 80x power objective, what is the total power you are using?
a) 80x to the tenth power
b) 90x
c) 800x
d) 70x
Which of the following is an example of a protist that is a producer?
a) algae
b) slime mold
c) parasite
d) sac fungus
What kind of protist would you expect to find near an underwater volcanic vent?
a) heat loving archaea
b) methane making archaea
c) spirilla shaped bacteria
d) cocci shaped virus
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