Transcription of structural genes in an inducible operon _____
A) occurs continuously in the cell
B) starts when the pathway's substrate is present
C) starts when the pathway's product is present
D) stops when the pathway's product is present
B
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The statement, "There are 628 gray squirrels living on campus," describes the ________ of gray squirrels on campus.
A. ecosystem B. population C. community D. species
How were experiments done by Griffith similar to those done by Avery, MacLeod, and McCarty?
A. Both used a mouse host. B. Both used pneumococcal bacteria. C. Both used purified DNA. D. Both were done in the 1940s. E. Both used enzymes that destroyed DNA.
Skeletal muscle contraction is largely dependent on calcium ions that enter the cell from:
A. the extracellular space. B. the sarcoplasmic reticulum. C. the T tubule. D. the Z disc.
_____ is a cancer of the bone marrow.
Fill in the blank(s) with the appropriate word(s).