Photosynthesis Concepts and Processes

Mr. Anderson explains photosynthesis, highlighting its importance in providing oxygen and food. He describes the structure of chloroplasts, the role of pigments, and the photosynthesis equation. The video details the light-dependent reactions and the Calvin Cycle, emphasizing the production of glucose and oxygen. It also covers photorespiration and plant adaptations like C4 and CAM pathways to optimize photosynthesis in different environments.

What are the two essential products of photosynthesis that are crucial for human survival?

• Oxygen and glucose

• Carbon dioxide and glucose

• Carbon dioxide and water

• Water and oxygen

Which organelle is the primary site of photosynthesis in eukaryotic cells?

• Mitochondria

• Ribosome

• Chloroplast

• Nucleus

What is the role of chlorophyll in photosynthesis?

• Reflects green light

• Reflects blue light

• Absorbs blue and red light

• Absorbs green light

What are the main reactants required for photosynthesis?

• Oxygen and glucose

• Water and carbon dioxide

• Glucose and water

• Carbon dioxide and oxygen

Where do the light-dependent reactions of photosynthesis occur?

• Cytoplasm

• Nucleus

• Thylakoid membrane

• Stroma

What is the primary function of the electron transport chain in the light-dependent reactions?

• To absorb light

• To split water molecules

• To produce glucose

• To transport electrons and pump protons

What are the two main products of the light-dependent reactions?

• NADPH and ATP

• Oxygen and glucose

• Carbon dioxide and water

• Glucose and NADPH

What is the role of rubisco in the Calvin cycle?

• To absorb light

• To produce ATP

• To fix carbon dioxide

• To split water molecules

What is photorespiration and why is it considered a problem for plants?

• It wastes energy and resources by using oxygen

• It enhances photosynthesis efficiency

• It occurs when there is too much carbon dioxide

• It produces oxygen instead of carbon dioxide

How do CAM plants adapt to hot environments to minimize water loss?

• They close stomata permanently

• They store carbon dioxide as malic acid at night

• They use more water during photosynthesis

• They open stomata during the day