Answer:
5- action potential 6- receptors 7- calcium ions 8- sarcolemma
Explanation:
This description illustrates the pathway of a action potential traveling along a neuro-muscular junction. this functions as a chemical synapse between a motor neuron and a muscle fibre. It allow the motor neuron to transmit a signal/action potential to the muscle fiber, causing muscle contraction.
Answer:
d) passage of a solute against its concentration gradient
Explanation:
When a solute is transported against its concentration gradient, the cells use metabolic energy. To move a substance from the region of its lower concentration to that of its higher concentration, the energy of ATP hydrolysis is utilized. These types of transport mechanisms are called active transports. If ATP hydrolysis is inhibited in a cell, it would not be able to perform the uphill movement of solutes due to the lack of any source of energy to drive the process.
Explanation:
It sends message directly to muscles and glands
<span>The primary germ layer that gives rise to the mucosae and associated glands is the endoderm.</span>
I believe the answer would be C. Because all worms normally have round bodies, and yes, they can be slender. They also don't really have nostrils, they can breathe through their skin even though they don't have lungs. So C. would be the best answer.
