PLEASE HELP-NEED ANSWER ASAP: Which of the following is true regarding enzyme-substrate reactions? a. Substrates bind to enzymes to catalyze the formation of products.

b. Enzymes bind to products to catalyze the formation of substrates.

c. Substrates bind to coenzymes to catalyze the formation of products.

d. Coenzymes bind to products to catalyze the formation of substrates

Match the type of adaptation to the correct example, structural adaptation functional adaptation behavioral adaptation example type of adaptation elephants live in herds to protect their young leaves of a rain forest plant species have a pointed tip that enables rainwater to drain off easily. camels have nostrils that they can close snakes produce venom to kill prey and defend themselves. earthworms coil when touched, as part of a defense mechanism. human skin darkens with increased exposure to sunlight.

Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere

Which structure in the cardiovascular system connect arteries to veins?