BIO 205 Exam Questions With 100% Correct Answers
Nucleoid is a region/structure found only in ____ cells.
a) prokaryotic
b) eukaryotic
c) bacterial
d) Both A and C
Prokaryotic/bacterial
A plasmid is double-stranded DNA. True or false?
True
A plasmid-gene or a chromosomal-gene (piec...
BIO 205 Exam Questions With 100% Correct
Answers
Nucleoid is a region/structure found only in ____ cells.
a) prokaryotic
b) eukaryotic
c) bacterial
d) Both A and C
Prokaryotic/bacterial
A plasmid is double-stranded DNA. True or false?
True
A plasmid-gene or a chromosomal-gene (piece of DNA with a specific product) will always produce
a________.
a) carbohydrate
b) ATP
c) Protein
d) Lipid
Protein
DNA polymerase is a(n)
a) lipid
b) polysaccharide
c) enzyme
d) nucelic acid
c- enzyme
DNA transcription is defined as
a) the replication process of DNA
b) the copying process of DNA
c) the synthesis of a protein
d) the ribosome synthesis
b- the copying process of DNA
DNA Translation is defined as
A. the replication process of DNA
B. the copying process of DNA
C. the synthesis of a protein
D. the ribosome synthesis
c- the synthesis of a protein
Can a bacterium "turn on" (stimulate) or "turn off" (inhibit) genes?
Yes
What % of genes are constantly expressed in bacteria?
80%
Which bacterium is widely used in laboratory science?
, E. coli
What is a mutation? List a few mutagens
Mutation= change in DNA
Mutagens= ex: UV light, radiation, some medications, asbestos
First step in identifying bacterial mutants indirectly with replica plating is based on bacterial
A. DNA
B. RNA
C. nutrient requirements
D. enzymes
c- nutrient requirements
Ames test is the method of identifying
A. mutants
B. carcinogenic molecules
C. bacteria
D. both A and B
d- both A and B
Transferring viral genetic material into bacterial cells is called
A. transformation
B. transduction
C. conjugation
D. motility
b- transduction
Genetic engineering is based on
A. transformation
B. transduction
C. conjugation
D. motility
a- transformation
Ti is a
A. protein
B. chromosome
C. plasmid
D. transposon
c- plasmid
Ti is a plasmid that _______
A. is highly mutated
B. carries "jumping genes" -transposons
C. causes crown gall disease and cancer
D. All of the above
d- all of the above
Plasmids are all R factors
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