Photosynthesis

Which three components do plants primarily use as inputs for photosynthesis?

• Carbon dioxide, water, and sunlight

• Oxygen, sugar, and water

• Nitrogen, sunlight, and carbon dioxide

• Water, oxygen, and sugar

What are the two main products created by plants during the process of photosynthesis?

• Carbon dioxide and water

• Oxygen and carbohydrates

• Sunlight and nitrogen

• Proteins and fats

In the general chemical equation for photosynthesis, nCO2 + nH2O + photons → (CH2O)n + nO2, what does the variable 'n' represent?

• The number of different types of atoms involved

• The number of stages in photosynthesis

• A variable representing the number of molecules

• The total amount of energy produced

If a plant produces a carbohydrate where 'n' is 6 (like glucose, C6H12O6), how many molecules of oxygen (O2) are released according to the balanced general equation nCO2 + nH2O + photons → (CH2O)n + nO2?

• 1 molecule of O2

• 2 molecules of O2

• 6 molecules of O2

• 12 molecules of O2

What is the main difference between light reactions and dark reactions in photosynthesis?

• Light reactions produce glucose, dark reactions produce oxygen.

• Light reactions require sunlight, dark reactions do not directly require sunlight.

• Light reactions occur at night, dark reactions occur during the day.

• Light reactions use carbon dioxide, dark reactions use water.

Which of the following are produced during the light-dependent reactions of photosynthesis?

• Glucose and Carbon Dioxide

• Water and Photons

• Oxygen, ATP, and NADPH

• PGAL and G3P

What is the role of NADPH in photosynthesis?

• It acts as a reducing agent, giving away electrons and hydrogen.

• It absorbs sunlight to start the reactions.

• It is a waste product that is released into the atmosphere.

• It directly forms glucose molecules.

What does the Calvin Cycle (dark reactions) primarily use as inputs to produce building blocks for carbohydrates?

• Water and Oxygen

• Photons and Glucose

• Carbon Dioxide, ATP, and NADPH

• PGAL and G3P