Photosynthesis & Cell Respiration #1

The processes of photosynthesis and cell respiration can be thought of as a cycle because ___.

• photosynthesis happens in plants; cell respiration happens in animals

• the products of one are the reactants for the other

• both give off oxygen which can be used by animals

• both have the same purpose of generating glucose

The picture shows a student’s experiment with Elodea, a common aquatic plant. Which change in this experiment is most likely to INCREASE the volume of OXYGEN GAS that accumulates in the top of the tube?

• Use fewer plants

• Use a lamp that gives off green light

• Reduce the amount of water

• Move the source of light closer to the beaker

In what cell organelle does cellular respiration take place?

• chloroplast

• mitochondria

• cell membrane

• golgi apparatus

What happens to cellular respiration when our cells run out of oxygen?

• cell respiration stops

• we produce more ATP without oxygen

• we generate oxygen as well as ATP

• we generate lactic acid and less ATP

Tube A contains a plant

Tube B contains a snail

Tube C contains 2 plants and a snail

All tubes have an equal amount of O2 and CO2.

After 24 hours, what gas will be most common in tube A?

• oxygen

• carbon dioxide

• nitrogen

• oxygen and carbon dioxide will be equal

Tube A contains a plant

Tube B contains a snail

Tube C contains 2 plants and a snail

All tubes have an equal amount of O2 and CO2.

After 24 hours, what gas will be most common in tube B?

• oxygen

• carbon dioxide

• nitrogen

• oxygen and carbon dioxide will be equal

Plants perform both photosynthesis and cellular respiration.

• TRUE

• FALSE

If plants would suddenly be removed from the ecosystem, what 2 things would animals would not be able to get?

• CO2 and food

• O2 and CO2

• O2 and food

• glucose and food

What is the energy source for photosynthesis?

• enzymes

• sunlight

• glucose

• carbohydrates

What is ATP?

• usable energy

• a sugar

• heat from the Sun

• a protein