Biology Chapters 9 & 10

Energy is defined as the ability to

• communicate

• reproduce

• grow

• do work

Which of the following is NOT a form of energy?

• light

• oxygen

• heat

• electricity

Which of the following is used by cells to store and release the energy needed to power cellular processes?

• ATP

• RNA

• DNA

• NADP+

Plants use the green pigment chlorophyll to

• absorb sunlight

• store sunlight

• reflect sunlight

• change light to heat

High energy electrons are transported from chlorophyll to other molecules in the chloroplast by

• the thylakoid membrane

• pigments such as carotene

• electron carriers such as NADP+

• the protein ATP synthase

The clusters of chlorophyll and proteins that absorb sunlight and generate high-energy electrons in the chloroplasts are called

• carrier proteins

• transport chains

• photosystems

• synthase proteins

In photosystem II, as high energy electrons are passed to the electron transport chain, the chlorophyll gains new electrons from

• oxygen atoms

• water molecules

• hydrogen ions

• carbon dioxide

The light independent reactions of photosynthesis are also known as the

• Calvin cycle

• sugar cycle

• carbon cycle

• ATP cycle

Cells use the energy available in food to make a final energy rich compound called

• water

• glucose

• ATP

• ADP

Each gram of glucose contains approximately how much energy?

• 9 calories

• 9 Calories

• 4 calories

• 4 Calories