Answer:
Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion
Explanation:
Transport proteins generally perform two types of transport: “facilitated diffusion,” where a transport protein simply creates an opening for a substance to diffuse down its concentration gradient; and “active transport,” where the cell expends energy in order to move a substance against its concentration gradient
Answer:
Proteins are molecules made of amino acids. They are coded for by our genes and form the basis of living tissues. ... For example, proteins catalyse reactions in our bodies, transport molecules such as oxygen, keep us healthy as part of the immune system and transmit messages from cell to cell
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A yeast cell is a single celled organism whereas an onion cell is part of a multicellular organism
Delta, Aquifer, and or ocean but delta is where it meets the ocean
