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.
Answer: C
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A dish of cells is treated with centrinone, a centriole inhibitor. These cells would no longer be able to ___
A. conduct photosynthesis B. synthesize proteins C. make ATP D. produce lysosomes E. divide
Archaea reproduce primarily through ____
a. fusion b. binary fission c. sex d. meiosis e. cell joining
The nervous system can directly affect the activities of the digestive system locally through the collection of neurons within the walls along the gastointestinal tract. How might the brain exert its regulation of digestion from a distance?
A. The brain detects the stretching of the small intestines when food enters, and regulates the progress of chyme from the stomach into the intestine. B. Emotional stress or depression may alter appetite patterns. C. Muscular control of peristalsis resulting in mixing of food with digestive enzymes and moving food along the digestive tract. D. The sight, smell and taste of food can activate saliva production, stomach activity and digestion before it reaches the stomach.
Which blood vessel is next to living cells in nearly all body tissues?
a. venules b. arterioles c. capillaries d. veins e. arteries