The sodium-potassium pump transports two Na+ out of the cell for every two K+ transported in
____________________ Indicate whether the statement is true or false.
F, three
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The Black Plague has killed millions of humans over the course of history, yet we do not vaccinate against this disease. Why is this and how is the disease controlled in modern human populations?
What will be an ideal response?
A(n) __________ dominates bryophyte life cycles. Fill in the blank(s) with the appropriate word(s)
The biological clock controlling circadian rhythms must ultimately _____
A) depend on environmental cues B) affect gene transcription C) stabilize on a 24-hour cycle D) speed up or slow down with increasing or decreasing temperature
Rotenone is a poison commonly added to insecticides. Rotenone binds tightly with one of the electron carrier molecules in the electron transport chain, preventing electrons from passing to the next carrier molecule. Insects exposed to rotenone will die
because A) they will no longer be able to perform anaerobic respiration. B) high levels of fermentation products will build up in their bodies. C) they will no longer be able to produce adequate amounts of ATP. D) they will no longer be able to absorb water and will become dehydrated.