Measuring Photosynthesis

What are the bubbles rising in the test tube?

• nitrogen gas

• carbon dioxide gas

• glucose

• oxygen gas

Tags

NGSS.MS-LS1-6

Why would temperature affect the rate of photosynthesis?

• Enzymatic activity is usually temperature dependent

• plant cells expand with temp, have greater surface area

• More CO₂ dissolved in the water

• More glucose needed for respiration at higher temperatures

Tags

NGSS.MS-LS1-6

A student is collecting the gas given off from a plant in bright sunlight at a temperature of 27°C. The gas being collected is probably ________.

• oxygen

• carbon dioxide

• ATP

• glucose

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which conclusion best matches the trends shown on the graph?

• Bean plants produce more ATP than corn plants.

• Corn plants require more oxygen than bean plants.

• Corn plants release more carbon dioxide than bean plants.

• Corn plants produce sugars at a faster rate than bean plants.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Design an experiment to test the effect of light intensity on the rate of photosynthesis in plants.

• Measure the growth of plants in different soil types.

• Use a light meter to measure light intensity and count oxygen bubbles produced by aquatic plants.

• Compare the color of leaves in different light conditions.

• Measure the temperature of plants under different light sources.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following is the correct equation for PHOTOSYNTHESIS?

• CO₂ + light + H₂O --> O₂ + Sugar

• CO₂ + sugar + H₂O --> O₂ + light

• _O2 + light + H₂O --> CO₂ + Sugar

• CO₂ + O₂ + H₂O --> Light+ Sugar

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which gas is removed from the atmosphere during photosynthesis?

• hydrogen

• oxygen

• nitrogen

• carbon dioxide

Tags

NGSS.MS-LS1-6

How would light intensity generally affect the rate of photosynthesis?

• Increases the rate, up to a point

• Increases the rate

• Decreases the rate

• No relationship to the rate

Tags

NGSS.MS-LS1-6

How would the concentration of CO₂ in water affect photosynthesis?

• The higher the CO₂, the greater the rate

• The higher the CO₂, the lower the rate

• CO₂ concentration doesn't affect photosynthesis

• a greater rate of photosynthesis causes higher CO₂ concentrations 

Tags

NGSS.MS-LS1-6

Chlorophyll absorbs a higher percentage of _____ and _______ light.

• green and purple

• red and blue

• black and orange

• yellow and green

Tags

NGSS.MS-LS1-6