When a mosquito infected with Plasmodium first bites a human, the Plasmodium _____
A) gametes fuse, forming an oocyst
B) cells infect the human liver cells
C) cells cause lysing of the human red blood cells
D) oocyst undergoes meiosis
Answer: B
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The type of plant hormone primarily responsible for inhibiting leaf abscission is/are ____
a. gibberellins b. ethylene c. jasmonates d. abscisic acid e. auxins
A molecule or anything else that transports new genes into a cell is called a
a. vector. b. plasmid. c. restriction enzyme. d. bacterium.
Why do women experience the symptoms of osteoporosis more acutely than men?
A) Women have less bone mass and produce less estrogen later in life; these factors accelerate calcium loss. B) Women have less muscle mass and don't exercise as much. C) Men don't produce estrogen, so they don't rely on it as much as women do. D) Men take in more calcium in their diet, so they can't get osteoporosis.
Which of the following bacteria is gram-negative?
A) Treponema B) Corynebacterium C) Bacillus D) Staphylococcus E) Mycobacterium