The structure identified by the arrow is _____
1.the round window, which is activated by the stirrup
2.the cochlea, made up of the vestibular duct and the tympanic duct
3.the organ of Corti, which is made up of hair cells
4.the tympanic membrane, which vibrates when sound waves hit it
2
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Titer is the amount of ________ in serum.
A. antigen B. WBC C. memory cells D. complement E. antibody
In most animals, the gut or digestive tract can be thought of as:
A. the stomach, small intestine, and large intestine. B. the pouch in which digestion occurs. C. the small and large intestines, along with the anus. D. the tube that runs from the animal's mouth to its anus. E. the esophagus, stomach, and large and small intestines.
A baby born with wrinkled, poorly-formed skin and blood vessels prone to rupturing can be said to
have inherited a
a. lethal mutation. b. deleterious mutation. c. neutral mutation. d. advantageous mutation. e. partial mutation.
A prokaryotic ribosome has a 70 S size composed of two smaller subunits of which the smaller subunit is ________ S size and the larger one is ________ S size.
Fill in the blank(s) with the appropriate word(s).