Which of the following processes moves large molecules across a membrane in the opposite direction of the others?
A. endocytosis
B. exocytosis
C. receptor-mediated endocytosis
D. phagocytosis
E. pinocytosis
Answer: B
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What will be an ideal response?
How does the lactose repressor block transcription of the lactose operon?
a. by "turning off" the appropriate genes in the intron b. by regulating the activity of the enzymes that the operon codes for c. by binding allosterically to the appropriate genes d. by slowing the uptake of lactose into the cell e. by binding to the operator
The breaking apart of water in photosynthesis is critical to us as animals because photosynthesis:
A) produces oxygen. B) regenerates RuBP. C) generates ATP. D) consumes carbon dioxide. E) creates a food source.