Which type of lysosome contains undigested wastes?
A. Residual body
B. Primary lysosome
C. Secondary lysosome
D. Tertiary body
Answer: A
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Bell palsy is a condition characterized by the paralysis of facial muscles, eyelid droop, and sagging at the corners of the mouth. What nerve is affected in this condition?
A. Accessory B. Olfactory C. Hypoglossal D. Facial E. Trigeminal
You are studying a disease in which inhibition of sensory neurons is diminished, leading to more dramatic sensory sensations than are appropriate for stimulus strength. For example, when a person with this disease listens to a person talking in a normal voice, it sounds like they are yelling. Which neurotransmitter might be expressed at lower levels in this disease compared to a healthy individual?
A. Beta-endorphin B. Dopamine C. Glutamate D. Norepinephrine E. Gamma-aminobutyric acid (GABA)
The number of pairs of true ribs is ________
A) 7 B) 14 C) 12 D) 5
Which statement is true regarding action potential propagation?
A) In salutatory conduction, the myelin is composed of fat, which insulates the axon membrane against sodium ion flow across the membrane. B) Continuous propagation results in one graded potential producing multiple action potentials. C) The action potential will die out along the axon if another graded potential does not occur. D) All voltage-gated channels along the axon open at the same time, allowing sodium to flow in simultaneously. E) The active transport of sodium and potassium through sodium-potassium ion pumps causes depolarization of the axon membrane.