An mRNA sequence is 5?AUG-GGC-ACU-CAU-ACU-UAA3?, where AUG is the start codon and UAA is the stop codon. How many distinct aminoacyl-tRNA synthetases are required to translate the mRNA sequence?
A. 2
B. 3
C. 4
D. 5
E. 6
C. 4
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The stain that requires heating the slide for better penetration of stain into the mycobacterial cell wall is known as the:
a. Kinyoun's. b. Ziehl-Neelsen. c. fluorochrome. d. carbolfuchsin.
Which of the following is NOT true of the sex
hormones?
a. They are produced in the gonads. b. They are protein hormones. c. Estrogen is an example. d. They influence gender and sex differences. e. They are derived from the steroid cholesterol.
What is the raw material for evolution?
What will be an ideal response?
Suppose you are a researcher who has discovered a mutant fungus that produces extra-thick septa which allow for only minimal transfer of nutrients through them. Compared to the normal fungus, what would you expect the mutant to do?
a. grow more slowly b. make more extensive use of cytoplasmic streaming c. divide more rapidly d. digest food more efficiently