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Essential Biochemistry - Replication%2c Transcription And Translation (Section 3)

1
Total number of codons are:
Answer
(A)
64
2
Which of the following is NOT a component needed for transcription?
Answer
(C)
Ribosomes
3
The term 'wobble' refers to:
Answer
(A)
The flexibility in the 3rd base pairing in the codon
4
Which of the following are involved in protein synthesis?
Answer
A
B
C
5
What is the first step in replication?
Answer
(A)
Initiation
6
Which of the following processes is directly involved in the synthesis of proteins?
Answer
(C)
Translation
7
What is the role of tRNA in translation?
Answer
(A)
To carry amino acids to the ribosome.
8
A promoter site on DNA:
Answer
(C)
Initiates transcription
9
Which of the following enzyme fill the gap between Okazaki fragments?
Answer
(A)
DNA polymerase
10
Which enzyme is responsible for joining Okazaki fragments?
Answer
(C)
DNA ligase
11
Which of the following is NOT a type of RNA polymerase found in eukaryotes?
Answer
(D)
RNA polymerase IV
12
In contrast to eukaryotic mRNA, prokaryotic mRNA:
Answer
(C)
Can be polycistronic
13
What is the function of the spliceosome in eukaryotic cells?
Answer
(B)
To remove introns from pre-mRNA.
14
What type of enzyme is involved in protein degradation?
Answer
(B)
Proteases
15
Which of the following steps occurs during the initiation of translation?
Answer
A
B
C
16
Translocation during translation requires:
Answer
(D)
all of the above
17
Which of the following is NOT a step in eukaryotic mRNA processing?
Answer
(D)
Degradation
18
Which of the following nucleotide base is not present in codons?
Answer
(C)
Thymine
19
Which of the following antibiotics inhibits the peptidyl transferase activity?
Answer
(C)
Chloramphenicol
20
Which of the following is a characteristic of the genetic code?
Answer
A
C