Answer:
c. A single enzyme typically reacts with many different substrates.
Explanation:
Enzymes are proteins that have catalytic activity and they are specific. This means that a single enzyme has only one specific substrate. They act as a "lock and key" complex, so one substrate activates to one enzyme.
Also, enzymes accelerate the rate of a reaction by lowering its activation energy. Finally, they can act in an aqueous environment, so the answer is c.
Answer:
Today most people in developed countries have a scarcity of food sources.
Photosynthetic organisms capture energy from sunlight with pigments.
D. butterflies (they eat plants so they are a consumer)
Doppler effect and redshift as the light coming from stars from the distance can be shifted in the same way as a pitch of sound does