Protists and Fungi Answers

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What is the advantage of genetic recombination as a mode of reproduction in bacteria?

A
less time finding other bacteria
B
higher rates of reproduction
C
more susceptibility to antibiotics
D
greater genetic variation
4

Which correctly describes a process that occurs in bacteria?

A
In binary fission, the two new cells that are formed are susceptible to the same antibiotic.
B
In conjugation, bacterial DNA is transferred from one bacterium to another by a replicating virus.
C
In transduction, the cells that are formed are susceptible to the same antibiotic.
D
In transformation, a special sex pilus is required to connect two bacterial cells.
5

Which mode of genetic recombination is matched correctly with its description?

A
transduction—virus transfers genes from one bacteria to another
B
conjugation—involves splitting of one cell and results in two identical cells
C
binary fission—requires direct cell-to-cell contact of bacteria
D
transformation—uses a pilus to transmit genetic information between bacteria
6

What would happen to a bacterial cell if its protective covering was destroyed?

A
It would be better protected from the outside environment.
B
It would be able to take in materials more easily.
C
It would be harmed by chemicals in the environment.
D
It would reproduce more slowly.
7

Which series lists the correct order of steps of binary fission from first to last?

A
sex pilus connects two cells ® plasmid DNA is transferred ® complementary DNA strands are created ® cells separate
B
live cells bind to degraded cells ® DNA is transported across the membrane ® DNA is incorporated into recipient's DNA
C
virus infects bacterial cell, new viruses are made ® DNA is assembled in new virus ® new virus infects another bacterial cell and transfers DNA
D
DNA is copied ® DNA molecules attach to cell membrane ® cell membrane elongates and pinches off ® two identical cells are produced
10

Fast reproduction by binary fission enables bacteria to

A
cause infections in other organisms.
B
quickly modify their DNA to changing conditions.
C
change shape from coccus to bacillus.
D
transfer DNA from one cell to another.

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