The fimbriae and cilia usually guide the egg into the oviduct following ovulation
Indicate whether the statement is true or false
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Receptor molecules in synapses
A. serve as channel proteins. B. have a high degree of specificity. C. tend to concentrate on presynaptic terminals. D. can bind to any molecule in the synapse. E. bind irreversibly with neurotransmitter.
You are a scientist at a pharmaceutical company. You know that treating Parkinson's disease patients with dopamine has been ineffective in the past, however, your company has recently developed a method to modify drugs that can help them cross the blood-brain barrier. If you modified dopamine in this way, would it make dopamine treatment of Parkinson's more effective?
A. No, because injecting dopamine only makes the substantia nigra down-regulate its own production of dopamine. B. No, because dopamine will be broken down in the body before reaching the brain. C. Yes, a central issue with dopamine treatment is that dopamine cannot cross the blood-brain barrier. D. No, because acetylcholine is the main neurotransmitter that is deficient.
Where is blood pressure the greatest?
A. Capillaries. B. Arteries. C. Arterioles. D. All are the same.
translation occurs in three steps. choose the names of these steps from the list below. select all that apply.
a) elongation b) termination c) replication d) initiation e) transcription