Answer:
Option D
Explanation:
Adenosine triphosphate (ATP) is the source of energy for use and storage at the cellular level.
Answer: Membrane transport proteins are specific and selective for the molecules they move, and they often use energy to catalyze passage. Also, these proteins transport some nutrients against the concentration gradient, which requires additional energy.
Explanation:
Answer:
carbon based molecules + oxygen = water + carbon dioxide
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Answer:
Predatory kills their prey on the spot. Parastic keeps the host alive and feeds off of thier body over a long period of time, until they are too weak to stay alive.
Explanation:
