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
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
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