Active transport requires the help of carrier proteins, or “pumps”. ... Active transport is key to the function of a cell. It helps the cell control how much of certain ions such as water, sodium, or potassium pass through the cell membrane. Without active transport, a cell would not be able to maintain homeostasis.
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The enzyme influences the speed of change from substrate to product. Enzymes are released as substrates in a chemical reaction. An enzyme is a special kind of substrate in a chemical reaction.
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The principle of faunal succession states that different fossil species always appear and disappear in the same order, and that once a fossil species goes extinct, it disappears and cannot reappear in younger rock
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