it's A. urine hope it helped
The statement is true. Digestion of food molecules in the digestive system in the gastrointestinal tract does not require coupling of ATP hydrolysis; but instead requires enzymes that speed up the spontaneous reaction. Enzyme digest specific food substrates at different parts of the digestive system until the final useful products of these enzymatic reactions are absorbed to the body metabolism.
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Answer:
4) Cytoplasm
Explanation:
The cytosol (cytoplasm) is the "soup" within which all the other cell structures reside and where most of the cellular metabolism occurs.
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Answer:
<u> Neuromuscular Junction -</u> It is a chemical synapse formed by the contact between a motor neuron and a muscle fiber.
<u>Function- </u>As the motor neuron are <em>able to transmit the required signals</em> to the muscle fiber, which causes the muscle contraction.
Explanation:
<u>Steps in neuromuscular transmission:</u>
- calcium entry into the presynaptic terminus.
- diffusion of Ach across cleft.
- combination of Ach with post-synaptic receptors and Ach breakdown via esterase.
- opening of Na + /K + channels (cation channels).
- postsynaptic membrane depolarization (EPP).