Answer:
D: Both B and C
Explanation:
The process is never linear, scientists often answer a question that then leads to another one, therefore B is correct. C is also correct because hypotheses often change after an experiment has been done, and the goal of science is to constantly find more accurate information.
A substance that speeds up the rate of a chemical reaction is called a Catalyst.
Depending on the organelles present and the unique features can give clues about the function, for example, muscle cells contain higher concentrations of mitochondria