The results of an experiment
(a) don’t have to be repeatable.
(b) should be repeatable by the investigator.
(c) should be repeatable by other investigators.
(d) must be both b and c.
(c) should be repeatable by other investigators.
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An organism that obtains its energy from sunlight is a(n) ____
a. autotroph b. auxotroph c. heterotroph d. chemotroph e. phototroph
A filter feeder is an animal that:a
has well-developed teeth for stabbing prey. b. secretes paralyzing venom suspended in saliva. c. has a symbiotic relationship with its host. d. entraps food particles from water. e. feeds on nectar while suspended in air.
Most of the carbon dioxide released from cells is transported in the blood as
A) carbohydrates, such as glucose. B) dissolved carbon monoxide. C) bicarbonate ions in the plasma. D) carbon dioxide attached to hemoglobin.
Cellular slime molds can be distinguished from plasmodial slime molds on the basis of ____.
A. reproductive structures B. spore formation C. number of nuclei per cell D. slime trails E. food requirements