Neurotransmitters like acetylcholine
A. are manufactured in the synapse.
B. permanently attach to neuronal membranes.
C. are always present in the synapse.
D. stimulate neurons.
D. stimulate neurons.
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Which type of microscopy passes light directly through a stained and killed specimen?
a. confocal laser scanning microscopy b. phase-contrast microscopy c. bright field microscopy d. scanning electron microscopy e. fluorescence microscopy
A soft drink manufacturer, notorious for making marketing claims that are deceptive but technically accurate, has released a new sports beverage. The advertisements for this beverage assert that it contains anabolic molecules that provide energy and is 100% legal to produce and consume. You buy a bottle of this beverage for testing and discover that it contains little more than water, disaccharides such as sucrose and maltose, citric acid, and other fairly common fruit flavoring agents. Have you finally caught the company in a lie?
a. Yes! This beverage does not contain any anabolic ingredients despite these claims. b. Yes! Anabolic steroids are illegal in the United States regardless of how they are consumed. c. No; disaccharides are created through anabolic pathways and are perfectly legal. d. No; anabolic molecules denature in the presence of citric acid, becoming legally inert.
Myoglobin supplies ____ to fuel muscle activity
a. oxygen for aerobic respiration b. phosphate for ATP formation c. direct energy for white muscle fiber contraction d. glucose for lactate fermentation e. glucose for aerobic respiration
Which process takes place in the cytoplasm?
a. DNA replication b. transcription c. duplication d. translation e. transition