Photosynthesis Overview and Mechanisms

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Questions and Answers

What is the primary function of photosynthesis in plants?

To release oxygen into the atmosphere
To absorb light for energy
To produce glucose as food (correct)
To split water molecules

Where does photosynthesis primarily occur within plant cells?

In the mitochondria
In the cell membrane
In the chloroplasts (correct)
In the ribosomes

Which component of the chloroplast is responsible for absorbing light energy?

Chlorophyll (correct)
Grana
Thylakoids
Stroma

What is produced as a byproduct of the light reaction in photosynthesis?

Oxygen (A) Signup and view all the answers

What are the two main stages of photosynthesis?

Light-dependent and light-independent reactions (D) Signup and view all the answers

What role do thylakoids play in photosynthesis?

They contain chlorophyll and facilitate light reactions (A) Signup and view all the answers

What molecules are combined during the dark reaction of photosynthesis?

Carbon dioxide and high energy hydrogens (B) Signup and view all the answers

Which structure in the chloroplasts is described as stacks of thylakoids?

Grana (A) Signup and view all the answers

What is the significance of the 'Calvin Cycle' in photosynthesis?

It produces glucose from carbon dioxide (C) Signup and view all the answers

Which of the following is NOT a requirement for photosynthesis to occur?

Glucose (B) Signup and view all the answers

What is the primary role of chlorophyll in the context of photosynthesis?

To absorb light energy and convert it into chemical energy (B) Signup and view all the answers

What is a defining characteristic of the light-dependent reaction of photosynthesis?

It generates ATP and NADPH, which are used in the Calvin Cycle (D) Signup and view all the answers

Which structure in the chloroplast plays a crucial role in the light-dependent reactions of photosynthesis?

Thylakoid membrane (D) Signup and view all the answers

Which of the following is NOT a product of the light-dependent reaction of photosynthesis?

Glucose (B) Signup and view all the answers

What role does the Calvin Cycle, or the dark reaction, play in photosynthesis?

To convert carbon dioxide into glucose (A) Signup and view all the answers

Which best describes the relationship between the light-dependent and light-independent reactions of photosynthesis?

The light-dependent reaction provides the energy carriers (ATP and NADPH) needed for the light-independent reaction. (A) Signup and view all the answers

Why is the light-independent reaction of photosynthesis also known as the Calvin Cycle?

It is named after the scientist, Melvin Calvin, who discovered its processes. (D) Signup and view all the answers

What is the primary role of the stroma in the context of photosynthesis?

To house the enzymes and molecules required for the Calvin Cycle (C) Signup and view all the answers

Which of the following is NOT a reactant in the overall reaction of photosynthesis?

Oxygen (B) Signup and view all the answers

What is the primary product of photosynthesis, the compound that serves as the plant's primary energy source?

Glucose (D) Signup and view all the answers

Flashcards

Photosynthesis

The process by which plants use light energy to convert carbon dioxide and water into glucose (sugar) and oxygen.

Chlorophyll

The green pigment found in plants that absorbs light energy for photosynthesis.