The answer to your problem is C. Respiration.
Answer:
The main function of the cell nucleus is to control gene expression and mediate the replication of DNA during the cell cycle. The nucleus is an organelle found in eukaryotic cells. Inside its fully enclosed nuclear membrane, it contains the majority of the cell's genetic material.
Explanation: Well it's a known fact!!!!!
Answer:
Evaporation, condensation, precipitation.
Explanation:
Sun makes it evaporate. Next, it forms clouds. When the clouds get too heavy with water droplets, they fall to the ground as rain, snow, sleet or hail.
Answer:
Enzymes are biological catalysts that speed up chemical reactions by lowering the activation energy. Enzymes are proteins comprising one or more polypeptide chains. Enzymes have an active site that provides a unique chemical environment made up of certain amino acid R groups (residues).