A heart with three chambers, one atrium, and two ventricles is shared by _____.
A. reptiles and mammals
B. reptiles and amphibians
C. amphibians and mammals
D. birds and mammals
E. birds and reptiles
Answer: B
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Humans are unable to get metabolic energy from cellulose because:
A. cellulose contains very little chemical energy. B. cellulose is not part of a normal diet. C. cellulose digesting enzymes are absent from the human gut. D. cellulose does not taste good. E. cellulose is present in large quantities in the gut.
The child of a mother with IAIA blood and father with IAIB blood will have:
A. 25% chance of being IAIA. B. 50% chance of being IAIA. C. 75% chance of being IAIA. D. 25% chance of being IAIB. E. 50% chance of being IBIB.
Normal biota can benefit the human host by making a majority of the nutrients needed in human metabolism
a. true b. false
The organ of Corti ____.
A. is integral to balance B. controls the sense of depth perception C. has hair cells that fire and sends signals to the brain D. is involved in visual acuity E. detects light energy