Match the following E. coli ribosomal components on the left with the function on the right. Enter only one letter on each line. Not all letters will be used.
A. 16S rRNA _____ binds to IF-3
B. 5S rRNA _____ catalyzes the peptidyl transfer reaction
C. 30S ribosome _____ specifically recognizes the Shine-Delgarno sequence
D. 23S rRNA
Which class of pattern-regulating genes is responsible for specifying organs and appendages?
A. homeotic
B. maternal
C. segmentation
D. None of the choices is correct.
DNA footprinting is a technique that can be used to identify:
A. a region of DNA that has been damaged by mutation.
B. the position of a particular gene of a chromosome.
C. the position of internally double-stranded regions in a single-stranded DNA molecule.
D. the specific binding site of a repressor, polymerase, or other protein on the DNA.
E. All of the choices given can be identified by this technique.
Which of the following is nota function of EF-G in bacterial translation?
A. the hydrolysis of GTP
B. the mediation of elongation
C. the separation of the ribosome from the mRNA at termination
D. the hydrolysis of the terminal peptidyl-tRNA bond
A closed-circular DNA in its relaxed form has a linking number (Lk) of 500 . What will happen to the linking number of this molecule if the DNA is denatured by heat?
A. Lk will increase.
B. Lk will decrease.
C. Lk will stay the same.
D. Lk becomes undefined.
E. None of these choices is correct.
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