Photosynthesis

Organisms, such as plants, that make their own food are called

• autotrophs

• thylakoids

• heterotrophs.

• pigments.

Organisms that cannot make their own food and must obtain energy from the foods they eat are called

• autotrophs

• thylakoids

• heterotrophs

• plants.

Which of the following is an autotroph?

• mushroom

• leopard

• impala

• tree

Which of the following is NOT an example of a heterotroph?

• mushroom

• grass

• leopard

• human

What are the three parts of an ATP molecule?

• adenine, thylakoids, stroma

• adenine, ribose, phosphate groups

• stroma, grana, chlorophyll

• NADH, NADPH, and FADH2

Energy is released from ATP when

• a phosphate group is added

• ATP is exposed to sunlight

• adenine bonds to ribose.

• a phosphate group is removed.

Which of the following is NOT a true statement about ATP?

• Used ATP is discarded by the cell as waste.

• ATP provides energy for the mechanical functions of cells.

• ATP consists of ribose, adenine, and phosphate.

• ADP forms when ATP releases energy

Jan van Helmont concluded that plants gain most of their mass from

• water

• carbon dioxide in the air

• the soil.

• oxygen in the air.

Suppose Priestley repeated his experiment using many kinds of plants besides mint, and that when different plants were placed under the jar the candle remained lighted for different periods of time. What would be a logical conclusion from these experiments?

• Different plants release different amounts of oxygen.

• Different plants require different amounts of light

• Different plants release different amounts of carbon dioxide

• Different plants require different amounts of water.

Photosynthesis uses sunlight to convert water and carbon dioxide into

• oxygen

• high-energy sugars and starches.

• ATP and oxygen.

• oxygen and high-energy sugars and starches.