Which enzyme is required to initiate 5? capping of eukaryotic mRNA transcripts by removing the terminal phosphate group?
A) ribozyme
B) guanylyl transferase
C) methyl transferase
D) adenylyl cyclase
E) phosphodiesterase
B
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If you found a fish floating on the water covered with a white fuzzy material and tiny dark spheres you would suspect that the fish has been infected by a (an)
(a) diatom. (b) euglenoid. (c) water mold. (d) cynanobacterium.
Which of the following is true of the structure
labeled “A”? a. It is composed of tubulin subunits. b. It is composed of actin subunits. c. It is a microtubule. d. It is an intermediate filament. e. It is a major component of muscle cells.
Adhesion of plant cells is mediated by a pectin-rich region of the cell wall called the
a. external lamina. b. middle lamella. c. intermediate lamella. d. plasmodesmata.
Your doctor returns with your lab results and looks grave. "I'm afraid," she says, "you seem to have a problem with your hypophysis." What do you say?
A. "Am I going to need insulin shots?" B. "Doctor, right now I'm interested in results, not testable ideas about how things work!" C. "Is it the posterior? Neurological problems run in my family." D. "Well, that's only responsible for one or two hormones, so it should be easy to treat."