Answer:
a) Ribosomes
Explanation:
Ribosomes are organelles that initiate protein synthesis in cells. Both Eukaryotes and prokaryotes encompass ribosomes with them. However, They are structurally different in Eukaryotes and prokaryotes such as Bacterial Cells.
Answer:
i) iv) ii) iii)
Explanation:
The excitable cell begins being in a resting state, with a negative charge, -70 mV. First (i) there is a stimulus of influx of sodio into the cell, if the stimulus is strong enough and exceeds -55 mV, the threshold potential, then an action potential will occur. (iv) A strong influx of sodium that deporalizes the cells causes a change to a positive charge in the cell. (ii) Then potassium efflux from the cell in large quantities, which repolarizes the cell. (iii) With a continuous efflux of potassium the cell can become more negative than the resting potential, this is called hyperpolarization.
Answer:
Neurotransmitters
Explanation:
Examples of neurotransmitter are acetylcholine, epinephrine, dopamine, GABA, serotonin, and etcetera. They are released from synaptic vesicles in the presynaptic membrane. They then diffuse through the synaptic cleft or neuromuscular junctions and bind to their receptors on the postsynaptic membrane and invoke an impulse.
Answer:
Well, sometimes you use the process of elimination in some areas.
Explanation:
For example,
You don't have common sense in math class, but you can determine how to divide and multiply an equation. Sometimes you don't have to be "AP Smart", and you can still have all A's.
Or you could just research the answers :)
After collecting specimens from many ares of the world Darwin noticed some similarities in them.
