Answer:
One sample should have had no enzyme and acted as a control.
He is incorrect because a catalyst is a substance that speeds up a chemical reaction so if there is no reaction to begin with a catalyst will not due anything.
The cell membrane is semi-permeable, kind of like a filter to let some molecules in and keep larger molecules out
Answer:
The answer is A) derived from the nematocysts of its prey.
Explanation:
Sea stars mostly eat cnidarians (mollusks) which can contain a large number of nematocysts in their bodies. Therefore it would be possible that this toxin is absorbed from the prey.
Answer:
what are you trying to ask about?
