Cyanide gas is lethal because it
A) inhibits the kinase that phosphorylates ATP.
B) inhibits the ATP synthase.
C) blocks substrate-level phosphorylation.
D) blocks the final electron acceptor in the ETS.
E) binds NAD preventing it from being reduced.
D
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Damage to the substantia nigra causes a decrease in the neurotransmitter dopamine. This causes a gradual, generalized increase in muscle tone, which is the main symptom of
A) Parkinson's disease. B) rabies. C) Alzheimer's disease. D) myasthenia gravis. E) tetanus.
An adult with cretinism has incomplete manifestation of puberty (e.g., scant pubic hair), abnormal facial features, dwarfism, and mental retardation. Explain what causes these symptoms. How is cretin dwarfism different from pituitary dwarfism? How could cretinism be prevented?
What will be an ideal response?
Generation of an action potential at an axon of a neuron may be caused by
A) a change in the number of Schwann cells surrounding the axon. B) stimulation of any portion of the dendrites of the neuron. C) input from various presynaptic cells. D) stimulation of any portion of the dendrites of the neuron and/or input from various presynaptic cells. E) All of the answers are correct.
A ____________________________________________________________ occurs when an animal continues to strain after parturition and the uterus turns inside out
Fill in the blank(s) with correct word