All of the following are true facts about enzymes except
a)
all living cells have enzymes.
b)
life would not be possible without enzymes.
c)
enzymes can speed chemical reactions by 100s to billions of times.
d)
there are a few types of enzymes, but they each perform many types of reactions.

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.