Intake of a specific molecule from the extracellular compartment by a cell occurs through ________.
A. receptor-mediated endocytosis
B. apoptosis
C. phagocytosis
D. exocytosis
Answer: A
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__________ are white blood cells that differentiate into macrophages.
Fill in the blank(s) with the appropriate word(s).
A mutation involving a single nucleotide is a ________ mutation.
A. point B. duplication C. deletion D. aneuploidy E. nondisjunction
Which of the following statements regarding neurotransmitters is TRUE?
A. Acetylcholine is broken down by enzymes present on postsynaptic cell membranes. B. Catecholamines are the most abundant neurotransmitters in the central nervous system. C. Opiate drugs, such as morphine, are antagonists of a class of neurotransmitters called endorphins. D. Gamma-aminobutyric acid (GABA) is a major excitatory transmitter in the central nervous system. E. Acetylcholine that is released at synapses binds to adrenergic receptors in the postsynaptic cell membrane.
Filtrate passes through all of the following except
a. glomerular capillary pores b. basement membrane c. cytoplasm of podocytes d. filtration slits e. Bowman's capsule