The midpiece of the sperm:
a. supplies enzymes to break down the covering of the ovum
b. contains mitochondria
c. holds 23 chromosomes
d. is a whip-like structure that provides movement for the sperm
b. contains mitochondria
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How many sensory modalities can a single sensory neuron have?
a) One b) Dozens c) Hundreds d) Thousands e) None
Which of the following cell structures are involved in propelling substances across cell surfaces?
A)microfilaments B)cilia C)intermediate filaments D)flagella E)vaults
The plasma membrane of cells lining the small intestine has ________, which are specialized for absorption of nutrients.
A. flagella B. microvilli C. cilia D. a glycocalyx E. dynein arms
________ participate in both nonspecific resistance and immune response
A) Helper T (TH) cells B) Natural killer (NK) cells C) Memory T (TM) cells D) Regulatory T (TR) cells E) Cytotoxic T (TC) cells