The primary mechanism that redistributes the flow of blood from one part of the body to another is changes in the
A. rate at which the heart beats.
B. rate at which blood is removed from an area.
C. strength of the heartbeat.
D. diameter of arterioles.
D. diameter of arterioles.
Biology & Microbiology
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If an animal has an open circulatory system, it will not have
a. a heart. b. respiratory organs. c. oxygen-carrying pigments. d. transport of nutrients. e. capillaries.
Biology & Microbiology
Which of the following is a common energy currency in living cells that powers most living organisms?
A) Sunlight B) Heat C) ATP D) Phosphate
Biology & Microbiology
Granulosa cells surround a:
a. primary oocyte. b. secondary oocyte. c. primary spermatocyte. d. secondary spermatocyte. e. Sertoli cell
Biology & Microbiology
The process by which a mature embryo sporophyte resumes growth is called ________
a. dormancy b. metabolism c. germination d. development
Biology & Microbiology