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QUESTION 12 Bacterial cells reproduce by ______

Biology

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QUESTION 12 Bacterial cells reproduce by ______. Binary fission

 

 

 

 

 

 

A type of cell division that produces 2 genetically identical daughter cells.

 

Conjugation

 

All the above.

 

Only a and b

2 points

 

QUESTION 13

 

Sickle-cell disease is a result of a mutation whereby Glutamic acid is replaced by Valine resulting in red blood cells becoming sickled-shaped, fiber-like structures; this is an example of a missense mutation.

 

True

 

False

2 points

 

QUESTION 14

 

A virus enters a dormant state within its host; this is an example of what type of reproductive cycle?

 

Lytic cycle

 

Lysogenic cycle

2 points

 

QUESTION 15

 

A type of mutation that changes a nucleotide base and results in the change of a single amino acid in a polypeptide sequence.

 

Induced mutation

 

Nonsense mutation

 

Silent mutation

 

Missense mutation

 

None of the above

2 points

 

QUESTION 16

 

Polymerase Chain Reaction is DNA replication in a test tube. All the following are placed in the tube EXCEPT

 

Primers

 

DNA (Taq) polymerase

 

Nucleotides (thymine, guanine, adenine, cytosine).

 

Helicase

 

DNA fragment of interest

2 points

 

QUESTION 17

 

A plasmid that carries genes that turn a bacterium into a pathogenic strain causing disease, is what type of plasmid?

 

Resistance plasmid

 

Degradative plasmid

 

Co-plasmid

 

Virulence plasmid

 

Fertility plasmid

2 points

 

QUESTION 18

 

If DNA damage is not repaired, it can lead to mutations occurring?

 

True

 

False

2 points

 

QUESTION 19

 

Which time period saw the rise and fall of the dinosaurs?

 

Mesozoic era

 

Jurassic Period

 

Paleozoic Era

 

Triassic Period

2 points

 

QUESTION 20

 

Somatic cell mutations are found in every cell of the adult organism?

 

True

 

False

2 points

 

QUESTION 21

 

A plasmid that allows bacteria to transfer genes to other bacteria, is what type of plasmid?

 

Resistance plasmid

 

Degradative plasmid

 

Co-plasmid

 

Virulence plasmid

 

Fertility plasmid