Overview of Photosynthesis

Posljednje ažuriranje about 2 years ago

26

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Biblioteka

Overview of Photosynthesis

Posljednje ažuriranje about 2 years ago

26

1

What is photosynthesis?

A. process that makes ATP

B. process in which sunlight is used to make glucose

C. process that makes 2 identical cells

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Plants collect carbon dioxide from the

A. soil

B. air

C. water

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The products of photosynthesis are (choose 2)

A. water

B. glucose

C. carbon dioxide

D. oxygen

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A student investigates the effects of sunlight intensity on the rate of photosynthesis. She places a plant in a closed container. She maintains the concentration of carbon dioxide and temperature (controls) but exposes the plant to different intensities of sunlight. She measures the rate at which oxygen is produced by the plant.

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A student decides to conduct a second experiment. She investigates the effect of carbon dioxide concentration on the rate of photosynthesis. She changes the concentration of carbon dioxide but keeps the temperature and intensity of light the same. She measures the rate of oxygen produced by the plant.

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Chloroplast contain the pigment

A. betanins

B. chlorophyll

C. cartenoids

D. anthocyanins

What color pigment is chlrophyll?

A. red

B. green

C. orange

D. brown

Photosynthesis occurs in what organelle?

A. mitochondria

B. nucleus

C. chloroplast

D. golgi

Where are chloroplast found?

leaves of green plants

roots

animal cells

prokaryotic cell

What is one function of chloroplast?

A. produce glucose

B. make ATP

C. stores DNA

D. makes ribosomes

What is the formula for glucose?

A. H₂0

B. CO₂

C. C₆H₁₂O₆

D. O₂

Click on the three things used to make glucose during photosynthesis.

What gas is made during photosynthesis?

A. oxygen (O₂)

B. carbon dioxide (CO₂)

C. hydrogen (H₂)

D. Nitrogen

The two steps of photosynthesis are the light dependent reaction and

A. Krebs Cycle

B. ETC

C. Glycolysis

D. Calvin Cycle (light independent reaction)

The plant uses glucose used for

A. growth and energy

B. to make ATP

C. for reproduction

D. for cell division

The oxygen produced is

A. used by the plant

B. released into the air

C. used for cell divison

Click on all of the controls of the experiment (hint there are 2)

Light Intensity

Temperature

CO2 Concentration

O2 Output Rate

What is the independent variable (what is changed by the scientist)?

Light intensity

Temperature

CO2 Concetration

O2 Output rate

What is the dependent variable (what was measured)?

Light intensity

Temperature

CO2 Concetration

O2 Output rate

What happened to the rate of oxygen output as the light intensity increased?

A. The amount of oxygen increased

B. The amount of oxygen decreased

C. The amount of oxygen stayed the same

What is the relationship between light intensity and the rate of photosynthesis?

A. the rate of photosynthesis decreases with more sunlight

B. the rate of phosynthesis increases with more sunlight

C. there is no connection

Click on all of the controls in the experiment (kept the same)

Light Intensity

Temperature

CO2 Concentration

O2 Output Rate

What is the independent variable (what the scientist changed)?

Light intensity

Temperature

CO2 Concentration

O2 Output Rate

What is the dependent variable (what was measured)

Light intensity

Temperature

CO2 Concentration

O2 Output Rate

What happens to the oxygen output rate as the amount of carbon dioxide increases?

A. as carbon dioxide increases, the amount of oxygen produced increses

B. as carbon dioxide increases, the amount of oxygen produced decreases

C. there is no relationship

How might oxygen output rate be impacted in this investigation if the light intensity was kept constant at 10% instead of 40%?

A. more oxygen would be produced

B. less oxygen would be produced

C. there would be no change