Which of the following statements is false regarding mammals?
A. Mammals’ lower jaw consists of a single bone.
B. Mammals have distinctive skeletal and dental traits.
C. The mammalian heart is three-chambered.
D. Mammals are animals in which females nourish their offspring with milk that they secrete from mammary glands.
E. Mammals also include the only animals that sweat.
Answer: C
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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
How many years did it take for the world population to reach approximately one billion?
a. 10 million b. 2.5 million c. 100 million d. 300 million e. 1.5 million
A single atom of carbon may form up to ____ covalent bonds with other atoms.
A. two B. three C. four D. five E. six
The A, P, and E sites are progressively occupied by amino acids being assembled into a polypeptide. These sites are part of
A. tRNA. B. the large ribosomal subunit. C. the spliceosome. D. mRNA. E. DNA.