Which ion is required for proper neurotransmitter release?
a. sodium
b. calcium
c. potassium
d. chloride
e. acetylcholine
ANSWER: b
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In animal bodies, __________ detect stimuli and
send signals to an __________ such as a brain. Fill in the blank(s) with the appropriate word(s).
What serves as a pressure release valve for the force of the air waves passing through the cochlea?
a. eustachian tube b. oval window c. tympanic membrane d. round window e. auditory nerve
How are the tails and heads of membrane phospholipids oriented in their environment?
A. The hydrophobic tails are oriented toward each other and the hydrophilic heads are oriented towards the extracellular fluid and the intracellular fluid. B. The hydrophilic tails are oriented toward each other and the hydrophobic heads are oriented towards the extracellular fluid and the intracellular fluid. C. The hydrophilic heads are oriented toward each other and the hydrophobic tails are oriented towards the extracellular fluid and the intracellular fluid. D. The hydrophobic heads are oriented toward each other and the hydrophilic tails are oriented towards the extracellular fluid and the intracellular fluid.
A major change in the surface glycoproteins of influenza A, which occurs every 10 years on average, is called (antigenic/genetic/protein) shift
What will be an ideal response?