Crash Course Biology: Photosynthesis and Food Production

What is the projected human population by 2050?

• 8 billion

• 9 billion

• 10 billion

• 11 billion

What process do plants use to make their own food?

• Cellular respiration

• Photosynthesis

• Digestion

• Fermentation

What pigment is responsible for the green color in plants?

• Carotene

• Chlorophyll

• Xanthophyll

• Anthocyanin

Where do the light-dependent reactions of photosynthesis take place?

• Mitochondria

• Nucleus

• Thylakoid membranes

• Cytoplasm

What is produced as a byproduct of the light-dependent reactions?

• Glucose

• Oxygen

• Carbon dioxide

• Water

What molecule does carbon dioxide combine with in the Calvin Cycle?

• NADPH

• G3P

• RuBP

• ATP

What is the main product of the Calvin Cycle?

• Oxygen

• RuBP

• G3P

• Water

What is the process called when plants use carbon dioxide to build sugars?

• Carbon oxidation

• Carbon hydration

• Carbon fixation

• Carbon reduction

Which organisms were found to photosynthesize in Antarctica?

• Green algae

• Blue-green algae

• Red algae

• Brown algae

What are scientists researching to help plants produce more food?

• Decreasing carbon dioxide intake

• Reducing sunlight exposure

• Enhancing photosynthesis

• Increasing water usage