Small areas that are home to a large number of threatened species and an exceptional concentration of species found nowhere else on Earth are called
A) biomes.
B) movement corridors.
C) biodiversity hot spots.
D) local populations.
Answer: C
Biology & Microbiology
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The liquid component of the cytoplasm is known as the
A. cytoskeleton. B. thylakoid. C. stroma. D. cytosol.
Biology & Microbiology
Lateral roots arise from the
a. endodermis. b. root cap. c. quiescent center. d. pericycle. e. root hairs.
Biology & Microbiology
Tay-Sachs disease affects which system?
a. reproductive b. digestive c. respiratory d. nervous e. cardiovascular
Biology & Microbiology
Which of the following is the mechanism of action of cyclosporine?
A. It blocks the complement cascade. B. It blocks the activity of activated Th1 T cells. C. It directly blocks CTL activity. D. It interferes with activation of Th2 T cells. E. It is an anti-inflammatory interfering with leukotriene function.
Biology & Microbiology