The main difference between an autotroph and a heterotroph is

A) how they respond to stimuli. B) their ability to move.
C) how they obtain energy. D) how they reproduce.


C

Biology & Microbiology

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A common second messenger molecule is

a. a steroid compound. b. cyclic AMP. c. ADP. d. prostaglandin. e. intermedin.

Biology & Microbiology

The procedure in which a patient’s blood is sent into a filter to be cleaned and then returned to the body is ____

a. peritoneal dialysis b. hemodialysis c. uro-dialysis d. lithotripsy dialysis e. hydro-dialysis

Biology & Microbiology

When r = 0.00001, the population size:a

will increase. b. will decrease. c. is stable. d. may increase or decrease, depending on K. e. may increase or decrease, depending on i

Biology & Microbiology

Life arose from nonlife around _________ years ago.

a) 400 billion b) 4 million c) 8 trillion d) 8 thousand e) 4 billion

Biology & Microbiology