#Question id: 4685
#Unit 3. Fundamental Processes
Some given characteristics of repressor such as;
I) λ-repressor and
II) cro-repressor
a) A repressor binds DNA as a dimer
b) A repressor work as both activator and repressor
c) Repressor is a single-domain protein
d) Repressor binds to operator sites cooperatively
e) Only represses transcription, like the Lac repressor
which of the following are correct match statements of given repressor
#Question id: 4686
#Unit 3. Fundamental Processes
Bacteriophage λ, has two mode of life cycle; lytic and lysogenic. In the lytic growth
a) a single Cro dimer is bound to OR3; this site overlaps PRM and so Cro represses that promoter
b) Repressor bound at OR1 and OR2 blocks RNA polymerase binding at PR, repressing transcription from that promoter
c) PR and PL binds RNA polymerase and directs transcription of lytic genes
d) During lytic, PRM is on while PR (and PL) are off
Find the correct combinations of lytic growth.
#Question id: 4687
#Unit 3. Fundamental Processes
Multiplicity of infection (moi) is a measure of how many phage particles infect a given bacterial cell within a population?
a) If the average number is one or fewer phage particles per cell, the infection is more likely to result in lysis
b) If the number of phage particles is two or more, it is more likely to produce lysis
c) If the average number is one or fewer phage particles per cell, the infection is more likely to result in lysogney
d) If the number of phage particles is two or more, it is more likely to produce lysogney
which of the following is the correct prediction of moi measurement?
#Question id: 4689
#Unit 3. Fundamental Processes
Cleavage liberates precursors of rRNAs and tRNA Cleavage at the points that is carried out by the enzymes excepts
#Question id: 4690
#Unit 3. Fundamental Processes
Which of the following of the cleavage enzymes of rRNAs and tRNA is a ribozyme?
#Question id: 4691
#Unit 3. Fundamental Processes
Processing of pre-rRNA transcripts (30S) in bacteria, after the modification and cleavage produces mature RNAs is