What functions have been demonstrated for bat biosonar?
a. They use biosonar to hunt insects.
b. Some bats use biosonar to identify their offspring.
c. Bats use biosonar to avoid obstacles such as other bats in tight spaces.
d. All of the above are true.
Ans: d. All of the above are true.
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Clostridium perfringens causes which of the following?
A. Gas gangrene B. Fire blight disease of pears C. Tuberculosis D. Pneumonia
In the human systemic circulation, list the blood vessels that are encountered as the blood leaves the
heart.
A. arteries B. arterioles C. capillaries D. veins E. venules 1. first vessel category 2. second vessel category 3. third vessel category 4. fourth vessel category 5. fifth vessel category
The input zone of a motor neuron is the
a. axon. b. axonal endings. c. cell body. d. dendrites. e. cell body and dendrites.
Which of the following refers to particularly stable arrangements of amino acid residues in a protein that give rise to recurring patterns?
A) Primary structure B) Secondary structure C) Tertiary structure D) Quaternary structure E) None of the above