Chapter 4: Cells and Energy

Most of the energy used by life on Earth comes from the

• sun

• rotation of Earth

• moon

• weather

Organisms that are not autotrophs

• get energy from inorganic molecules

• can survive without energy

• must consume other organisms to get energy

• get energy from sunlight

Light energy is converted to chemical energy through the process of

• cellular respiration

• fermentation

• photosynthesis

• glycolysis

ATP is composed of a nitrogenous base, a sugar, and

• one phosphate group

• two phosphate groups

• three phosphate groups

• four phosphate groups

How many carbon dioxide molecules are produced during the cellular respiration of two glucose molecules?

• two

• four

• six

• twelve

chloroplasts : photosynthesis ::

• mitochondria : cellular respiration

• solar energy : cellular respiration

• metabolism : carbon

• oxygen : carbon dioxide

photosynthesis : oxygen ::

• oxygen : carbon dioxide

• cellular respiration : carbon dioxide

• cellular respiration : oxygen

• cellular respiration : enzymes

ATP is called a cell's energy "currency" because

• ATP catalyzes all metabolic reactions

• ATP allows one organelle to be exchanged for another between cells

• glucose is made of ATP

• ATP can be "made" in one place and "spent" or used in another

When a phosphate group is removed from an ATP molecule,

• a substantial amount of energy is released

• an enzyme is formed

• energy is stored

• a substantial amount of energy is used

The space inside the inner membrane of a chloroplast is called the

• thylakoid

• reaction center

• pigment

• stroma