Only bacteria can reproduce outside a host and bacteria are not dependent on a host
Answer: B. Speed up the chemical reaction
Explanation: Enzymes help speed up chemical reactions in the human body. They bind to molecules and alter them in specific ways. They are essential for respiration, digesting food, muscle and nerve function, among thousands of other roles.
Answer:
That would be organism, species, and then community.
Explanation:
The sodium ion content of the extracellular fluid
