A reflex arc in which both the receptor and the effector organs of the reflex are on the same side of the spinal cord is
A. monosynaptic.
B. polysynaptic.
C. ipsilateral.
D. contralateral.
E. None of the choices is correct.
C
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Insulin is produced by the __________ cells of the pancreas.
Fill in the blank(s) with the appropriate word(s).
Which of the following is not true of enzymes?
A. Enzyme activity is temperature-dependent. B. Enzymes are relatively non-specific, and able to catalyze several chemical reactions in the body. C. Denaturation destroys the ability of an enzyme to function. D. They are considered to be biological catalysts. E. All of these are true of enzymes.
Which statement regarding the dentition of cats and humans is correct?
A) Cats have more teeth than humans. B) Cats have fewer teeth than humans. C) Cats have the same number of teeth as humans.
Which of the following structures do not contribute to the coarse grainy appearance of the perikaryon of a neuron?
A) mitochondria B) smooth endoplasmic reticulum C) free and fixed ribosomes D) rough endoplasmic reticulum E) All of the answers are correct.