The digestive system is concerned with
(a) blood circulation.
(b) digestion and the absorption of nutrients.
(c) reproduction.
(d) excretion of urine.
(b) digestion and the absorption of nutrients.
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Dr. Ratard was trying to determine the cause of a mysterious epidemic affecting fish in the gulf of New Mexico. His proposal that the deaths were caused by an organism called a protist is considered a(n) _________
A. theory. B. data set. C. hypothesis. D. conclusion. E. experiment.
What percentage of terrestrial plants are colonized by arbuscular mycorrhizae?
A) 10 B) 25 C) 50 D) 85
Which organelle has enzymes that break down
fatty acids, amino acids, and toxins?
a. lysosomes b. peroxisomes c. Golgi bodies d. vacuoles e. rough ER
Which process causes loss of heat by transforming liquid water into a gas?
A. Conduction B. Radiation C. Convection D. Metabolism E. Evaporation