1.
The end product of translation are
a) amino acids
b) lipids
c) polypeptides
d) all of these
2. All
viruses consists of
a) DNA and
protein coat
b) RNA and
protein coat
c) Polysaccharides
and proteins
d)a nucleic acid
and a protein coat
a) plasmid
b)protein
c)genetic
fingerprint
d)episome
4.
The genetic instructions for forming a polypeptide chain are carried to the
ribosome by the
a)tRNA
b)rRNA
c)mRNA
d)DNA
5. The
DNA of an elephant and the DNA of a mango tree will probably differ in all of
the following
a) Sequence of
DNA nucleotides
b) Length of DNA
molecules
c) Number of DNA
molecules
d) Kinds of
nucleotides utilized in forming DNA
6.
The lac operon in E.coli is involved in
a) Regulating the
expression of a gene
b) Controlling
DNA replication
c) Regulating the
translation of mRNA
d) Controlling
the formation of ribosomes
7. Genetic
variation can be introduced into bacteria by all of the following methods
except:
a)transduction
b)mutation
c)transformation
d)DNA
amplification
8.
Which of the following would most likely cause a mutation with the greatest deleterious
effect?
a) An insertion
of a nucleotide triplet into a DNA strand that codes for an mRNA
b) A single addition of a nucleotide in a DNA strand
that codes for an mRNA
c) a deletion of
a nucleotide triplet from a DNA strand that codes for an mRNA
d) all of these
9. All
of the following enzymes are involved in DNA replication except:
a) helicase
b) primase
c) DNA polymerase
d) RNA polymerase
10. Which
of the following is true?
a) A messenger
RNA molecule has the form of a double helix
b) Ribosomes
contain RNA nucleotides and amino acids
c) The uracil
nucleotide consists of the uracil nitrogen base, a deoxyribose sugar and a phosphate
group.
d) In eukaryotes,
DNA is manufactured in the nucleus and RNA is manufactured in the cytoplasm.
Answers
1c) polypeptides
2d)a nucleic acid and a protein coat
3a)plasmid
4c)mRNA
5d)Kinds of nucleotides utilized in forming DNA
6a)Regulating the expression of a gene
7d)DNA amplification
8b)A single addition of a nucleotide in a DNA strand that codes for an mRNA
9d)RNA polymerase
10b)Ribosomes contain RNA nucleotides and amino acids
1c) polypeptides
2d)a nucleic acid and a protein coat
3a)plasmid
4c)mRNA
5d)Kinds of nucleotides utilized in forming DNA
6a)Regulating the expression of a gene
7d)DNA amplification
8b)A single addition of a nucleotide in a DNA strand that codes for an mRNA
9d)RNA polymerase
10b)Ribosomes contain RNA nucleotides and amino acids
Fantastic
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ReplyDeletegood but better if there were a few structural questions
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