B. Is the answer. Please mark brainliest
Answer:
The correct answer will be:
1. Acetylcholine binds to receptors on the motor end plate
2. Chemically-regulated ion channels open, causing depolarization
3 End plate potentials trigger action potential(s).
4. Transverse tubules convey potentials into the interior of the cell
5. Ca++ is released from the sarcoplasmic reticulum
6. Ca++ binds to troponin, pulling on tropomyosin
7. Binding sites on actin are uncovered, allowing myosin to bind and carry out power strokes
8. Force increases.
9. Ca++ is pumped (re-sequestered) into the sarcoplasmic reticulum
10. Force decreases.
Explanation:
The muscle contraction is a highly controlled mechanism which begins at the neuromuscular junction with the release of the acetylcholine neurotransmitter. This neurotransmitter causes the depolarization of the membrane by binding to the receptors of the motor end plate which generates an action potential. This action potential is transmitted via T-tubules from sarcolemma to the sarcoplasmic reticulum.
The sarcoplasmic reticulum releases calcium ions which binds to the troponin protein. This troponin removes the protein tropomyosin from the actin causing the rotation of the tropomyosin exposing the binding sites for myosin. The myosin binds to the actin using energy from the ATP which pulls the actin causing contraction. Another ATP binds the myosin head which weakens the bond between myosin and actin which releases the myosin which decreases the force between them decreases and the muscles relax.
Answer:
the answer is fiber, because you can't eat fiber.
Answer:
The correct answer to the question: Dr. Gonzalez is:___ would be: Checking the validity of his tool to measure depressive symptoms.
Explanation:
Dr. Gonzalez, as a researcher, wants to test a tool that he himself created in order to measure depressive symptoms in Hispanic women. In order to validate his tool, and know if it will give acceptable results, he compares his tool with others than have already been established, and scientifically proven as effective. As such, he not only will ask participants in his study respond to his instrument, but he will also apply one that has already been used with that purpose: the Beck Depression Inventory, and another one that will measure factors not related to depression, known as a social desirability scale. With the results from all three tools, Dr. Gonzalez will be able to ascertain the validity of his own scale, and test it against others. In this way, he is further vaidating his results as well, and showing the accuracy of his own instrument.
Answer:
To allow for the passage of light in a microscope.