Why does transfer RNA perform its function in the cytoplasm

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

sound moves fastest in solids because the molecules are tightly packed and it allows sound to vibrate

garbage disposal because lysosomes dispose of old cell parts like garbage disposals dispose of old food.

because photosynthesis could not occur (apex)