Question

explain.AUXILIARIES AND MODALS​

Answer 1

Explanation:

The electrochemical proton gradient is a difference hydrogen ion concentration across a membrane producing a concentration gradient and an electrical potential gradient. These gradients together store potential energy in the cell which is available for work.

Answer 2

Question:

explain.AUXILIARIES AND MODALS

Answer:

Auxiliaries, Modals and Main verbs

Auxiliaries, Modals and Main verbsbe, have and do can be auxiliaries and main verbs. They have grammatical functions and are used for forming tenses, questions, the passive, etc. Modals are can, could, may, might, must, ought to, shall, should, will, would and need (need can also be a main verb).

Explanation:

Other helping verbs, called modal auxiliaries or modals, such as can, could, may, might, must, ought to, shall, should, will, and would, do not change form for different subjects.