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Chapter 6: Bacteria & Viruses Flashcards | StudBud
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Chapter 6: Bacteria & Viruses
Chapter 6: Bacteria & Viruses
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Life Science (5th Edition) BJU
Flashcards
19 cards
F
Practice quiz
P
Host live
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Questions
19
Answers
1
Some bacteria are resistant to antibiotics because they have become a new kind of organism
True
False
2
A virus is a simple cell with only a nucleic acid and a nucleus.
False
True
3
Which of the following is not a beneficial role of bacteria in the environment ?
aiding digestion
developing resistance to antibiotics
fixing nitrogen in the soil
decomposing wastes
4
Which of the following are made up of cells?
neither
viruses
both
bacteria
5
A vaccine gives your body __________.
peptidoglycan to resist a virus attack
a weakened or dead form of a virus
a latent form of a virus
the antibiotics needed to fight a virus
6
Which of the following is one reason that growing bacteria have not engulfed entire cities?
they form endospores rather than reproduce
the perfect conditions for growing do not last very long
the governments sprays antibiotics in the air to prevent growth
bacteria reproduce very slowly
7
Archaea are not classified in kingdom Bacteria because they have endoplasmic reticula.
False
True
8
A small circular strand of DNA found in bacteria is called a __________.
conjugate
ribosome
peptidoglycan
plasmid
9
How does an
active
virus reproduce?
The viral DNA is copied and passed on every time the host cell does mitosis
All the above are correct.
The viral DNA forces the host cell to go through binary fission.
The viral DNA forces a host cell’s own machinery to make more viruses.
10
The nucleic acid of a virus can be
Only DNA
Protein
Either type of nucleic acid
Only RNA
11
Bacteria are found in the digestive system of ruminants to help...
transform nitrogen
break down cellulose
prevent harmful bacterial infections
decompose waste
12
Viruses have which of the following structures?
a cell wall
ribosomes
RNA
a cell membrane
13
The human body is known to have trillions of bacterial cells.
True
False
14
Bacteria are found in which of the following places?
in your digestive tract
in the soil
all of the above
in the air
15
Which of the following statements is (are) true about antibiotic-resistant bacteria?
Antibiotic resistance can sometimes be shared among bacteria.
Bacteria that become resistant are an example of evolution.
Antibiotics not killing mutated bacteria is an example of natural selection
Mutation can cause antibiotic resistance.
16
A latent virus can remain in the body for years before destroying host cells.
False
True
17
To escape poor conditions such as extreme heat or cold, some bacteria form __________.
capsids
endospores
capsules
blobs
18
Viruses are classified in kingdom Archaea.
True
False
19
Harmful bacteria are a result of the whole earth being cursed after Adam and Eve sinned
True
False
