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Bio 161 Psu Final Review (Waters) Questions And Answers With Verified Solutions Rated A+
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Bio 161 Psu Final Review (Waters) Questions And Answers With Verified Solutions Rated A+
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Bio 161 Psu Final Review (Waters)Questions And Answers With Verified
Solutions Rated A+
At the neuromuscular junction, an electrical signal from the motor neuron is
translated to a chemical signal and then back to an electrical signal in the muscle
cell. What proteins interact with the released chemical to cause the electrical signal
in the muscle cell? - ANSWER✔✔ Cation chemical-gated channels
Which of the following processes directly require binding of or the use of ATP?
Choose all that apply. - ANSWER✔✔ - Release of cross-bridge (interaction)
between actin and myosin.
- Movement of calcium ions back into the sarcoplasmic reticulum after contraction.
- Conformation change of myosin from the bent conformation to the extended
(activated) conformation.
Where are mechanical-gated channels found in the process of muscle contraction?
- ANSWER✔✔ The sarcoplasmic reticulum
What would happen if someone stabbed your leg with a syringe full of calcium and
injected the calcium directly into your muscle cells? - ANSWER✔✔ Cross-bridges
would form in the absence of an action potential from a motor neuron.
Acetylcholine Esterase (AChE) - ANSWER✔✔ Breaks down ACh in the synaptic
cleft
Troponin - ANSWER✔✔ Binds to calcium
Tropomyosin - ANSWER✔✔ Directly covers the actin active sites that bind to
myosin
T-Tubule - ANSWER✔✔ Extensions of the sarcolemma that penetrate into the
center of the muscle cell
Sarcoplasmic reticulum - ANSWER✔✔ Storage location for calcium
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