Thick filaments are parallel bundles of ____ molecules
a. actin
b. tropomyosin
c. acetylcholine
d. myosin
e. troponin
ANSWER: d
Biology & Microbiology
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The component(s) of E. coli RNA polymerase responsible for promoter recognition is/are referred to as:
A. sigma factor. B. the TATA box. C. the mediator complex. D. an enhancer. E. transcription factors.
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About how many types of differentiated cells are in the body of an adult human?
a. 100 b. 200 c. 500 d. 1,000 e. 10,0000
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When individual cellular slime mold amoebas are near starvation, all the individuals in that immediate area aggregate into a large moving mass of cells called a
A. spore. B. test. C. community. D. colony. E. slug.
Biology & Microbiology
Explain the concept of selective toxicity.
What will be an ideal response?
Biology & Microbiology