The ____ connects the peripheral nerves to the brain
a. pons
b. gray matter
c. white matter
d. spinal cord
e. medulla oblongata
ANSWER: d
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What condition triggers apoptosis in immature T-cells?
a. premature exposure to viral pathogens b. sufficiently high T-cell concentrations c. T-cell receptors binding to “self” proteins d. insufficient levels of ATP phosphorylation
Which statement concerning gravity detection in humans is true?
a. Statoliths are pulled down by gravity, stimulating hair cells of the statocysts. b. Otoliths are pulled down by gravity onto stereocilia, stimulating nerve impulses. c. Gravity moves the cupula, causing hair cells of the lateral line organs to bend. d. Gravity pulls on the hair cells of the basilar membrane, stimulating nerve impulses. e. Gravity moves perilymph over the hair cells of the tectorial membrane
Alternate forms of the same gene are known as _____
Fill in the blank(s) with the appropriate word(s).
Which of the following enzymes breaks down the "glue" that holds cells together?
A) Hyaluronidase B) Streptokinase C) Fibrinolysin D) Collagenase