Match the type of transport it to it’s definition. me asap

1. use carrier proteins to move substances to an area of low concentration to an area of high concentration

2. process by which a substance is released from a cell through a vesicle that transports it to the cell surface and fuses with the cell membrane

3. process by which cells ingest external fluid, macromolecules, or other large particles

answers:

a. membrane pumps

b. endocytosis

c. exocytosis

explanation:

plz give me the characteristics.

the correct answer is b

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.

these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.