AP BIO Unit 3

Front

What is the primary function of the Light Reactions in photosynthesis?

Back

The Light Reactions convert solar energy into chemical energy, producing ATP and NADPH.

Front

Where do the Light Reactions of photosynthesis occur?

Back

The Light Reactions occur in the thylakoid membranes of chloroplasts.

Front

What is the Calvin Cycle's role in photosynthesis?

Back

The Calvin Cycle uses ATP and NADPH from the Light Reactions to convert carbon dioxide into glucose.

Front

Where does the Calvin Cycle take place?

Back

The Calvin Cycle takes place in the stroma of chloroplasts.

Front

What is the significance of NADPH in photosynthesis?

Back

NADPH is a high-energy electron carrier that provides reducing power for the Calvin Cycle.

Front

What is the primary structure of proteins that remains intact when an enzyme denatures?

Back

The primary structure of proteins, which is the sequence of amino acids, remains intact.

Front

What is denaturation in the context of enzymes?

Back

Denaturation is the process where an enzyme loses its three-dimensional structure, rendering it inactive.

Front

What was the composition of Earth's atmosphere when it was first formed?

Back

Earth's early atmosphere lacked free oxygen; it was primarily composed of nitrogen, carbon dioxide, and other gases.

Front

What are the products of the Light Reactions?

Back

The products of the Light Reactions are ATP, NADPH, and oxygen.

Front

What is the role of chlorophyll in photosynthesis?

Back

Chlorophyll is a pigment that absorbs light energy, primarily in the blue and red wavelengths, to drive photosynthesis.