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:
proteins
Explanation:
carbohydrates and fats are made from three basic molecules: Carbon, hydrogen and oxygen. All proteins contain an element not found in carbohydrates and fats, nitrogen and some proteins also contain sulfur. The main unit that builds all carbohydrates is monosaccharide, or sugar while triglycerides make fats and proteins consist of amino acids.
Answer:
It's C
Have a wonderful rest of your day :)
I think it's:
B- reproductive
Gonads are sex organs that produce gametes. Male gonads are the testes, which produce sperm and male sex hormones. Female gonads are the ovaries, which produce eggs (ova) and female sex hormones.
