active transport. The movement of ions or molecules across a cell membrane in the direction opposite that of diffusion, that is, from an area of lower concentration to one of higher concentration. Active transport requires the assistance of a type of protein called a carrier protein, using energy supplied by ATP.
<span>A to recycle carbon dioxide in the atmosphere</span>
Chemical weathering is caused by rain water reacting with the mineral grains in rocks to form new minerals (clays) and soluble salts. These reactions occur particularly when the water is slightly acidic.
Answer:
Ribose and Deoxyribose.
Explanation:
They are both important components of nucleotides, and are found in RNA and DNA.
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Answer:
outside the nucleus in the cytoplasm
Explanation:
