Unit 5 - Big Idea #1 - ATP and Enzymes

What is the small energy molecule that is constantly being used and recycled by cells?

• ATP

• ADP

• protein

• starch

Organisms mostly break down _____ to create ATP.

• protein

• lipids

• nucleic acids

• carbohydrates

To release the energy from ATP, a phosphate group must be:

• added

• removed

• left the same

ATP has _____ phosphate groups.

• 1

• 2

• 3

• 4

ATP is constantly being recycled by which cellular organelle?

• chloroplast

• mitochondrion

• ribosome

• nucleus

ATP is another name for cellular _____.

• food

• structure

• energy

• movement

An organisms that can make its own carbohydrates is called a(n):

• autotroph

• heterotroph

• both an autotroph and a heterotroph

An organism that has to eat or absorb its carbohydrates is called a(n):

• autotroph

• heterotroph

• both an autotroph and a heterotroph

Almost all enzymes are which type of macromolecule?

• carbohydrate

• lipid

• protein

• nucleic acid

Two correct answers - What do enzymes do to chemical reactions in our cells?

• speed them up

• reduce the energy needed for the reaction to occur

• slow them down

• raise the energy needed for the reaction to occur