The arrows in the diagram below are pointing to the ____
a. esophagus and small intestine
b. trachea and large intestine
c. sphincters at the top and bottom of the stomach
d. esophagus and pancreas
e. stomach
ANSWER: c
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Segmented genomes in negative-strand RNA viruses may include two to eight segments each coding for a unique protein.
Answer the following statement true (T) or false (F)
Agar is a complex polysaccharide that comes from a/an ________.
A. fungus B. algae C. bacterium D. green plant E. marine invertebrate
The extent to which a particular perception is
produced is mainly due to the a. sensitivity of the receptors. b. speed of nerve transmission. c. brain area devoted to interpretation. d. transmitter substances at the synapses. e. amount of stimulus.
The foramen ovale functions to:
a. permit blood to bypass the non-functional lungs in a fetus. b. establish the basic heart rate. c. prevent blood from flowing backward. d. carry blood to the lungs in a fetus. e. transport poorly oxygenated blood.