The Process Of Photosynthesis Worksheet (Page 3 of 3) in pdf

The Process Of Photosynthesis Worksheet Page 3

Name

Class

Date

The Light-Independent Reactions: Producing

Sugars

Both ATP and NADPH are produced by the light-dependent reactions of photosynthesis. The

Calvin cycle uses the energy in ATP and NADPH to produce high-energy sugars. A model of the

Calvin cycle is shown below.

Follow the directions.

1. Circle the places where ATP and NADPH are used.

2. Draw an X over the two 3-carbon molecules that are removed from the cycle to produce

sugars, lipids, and other compounds.

Calvin Cycle

Sugars and other compounds

Answer the questions.

3. Circle the letter of each statement that is true about the Calvin cycle.

A. The main products of the Calvin cycle are six carbon dioxide molecules.

B. Carbon dioxide molecules enter the Calvin cycle from the atmosphere.

C. Energy from ATP and high-energy electrons from NADPH are used to convert 3-carbon

molecules into higher-energy forms.

D. The Calvin cycle uses 6 molecules of carbon dioxide to produce a single 6-carbon sugar

molecule.

4. Why are the reactions of the Calvin cycle also called the light-independent reactions?

120

The Process Of Photosynthesis Worksheet Page 3