Chapter 9 Study Guide

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy stored in glucose, using carbon dioxide and water.

Front

What role does chlorophyll play in photosynthesis?

Back

Chlorophyll is a green pigment in plants that absorbs sunlight, which is essential for the process of photosynthesis.

Front

What are the two main stages of photosynthesis?

Back

The two main stages of photosynthesis are the light-dependent reactions and the light-independent reactions (Calvin cycle).

Front

What is the primary function of light-dependent reactions?

Back

The primary function of light-dependent reactions is to convert light energy into chemical energy in the form of ATP and NADPH.

Front

What is the role of ATP in photosynthesis?

Back

ATP provides the energy necessary for the light-independent reactions to synthesize glucose from carbon dioxide.

Front

What is the role of NADPH in photosynthesis?

Back

NADPH acts as a reducing agent, providing electrons and hydrogen ions for the synthesis of glucose in the light-independent reactions.

Front

What is the significance of the thylakoid membrane?

Back

The thylakoid membrane is where the light-dependent reactions occur, housing the chlorophyll and the electron transport chain.

Front

What is the function of the stroma in chloroplasts?

Back

The stroma is the fluid-filled space in chloroplasts where the light-independent reactions (Calvin cycle) take place.

Front

What is the equation for photosynthesis?

Back

The equation for photosynthesis is 6CO2 + 6H2O + light energy → C6H12O6 + 6O2.

Front

What is the importance of photosynthesis to life on Earth?

Back

Photosynthesis is crucial because it produces oxygen and organic compounds that serve as food for most living organisms.