Grade 9 Science

It is a chemical reaction between carbon dioxide and water.

• cellular respiration

• photosynthesis

• chemical change

• water cycle

The picture shows the process of photosynthsis. What else do plants need to turn

carbon dioxide

and water into food?

• oxygen

• carbohydrates

• light

• chlorophyll

It contains the green chemical and absorbs the energy from sunlight that allows carbon dioxide and water to react.

• glucose

• chloroplast

• chlorophyll

• cell wall

Thinking about photosynthesis and respiration in plants, which statement

is correct?

• a) Photosynthesis is the opposite of respiration

• b) Photosynthesis and respiration both occur in plants

• C. Only photosynthesis occurs in plants

• D. Respiration for maintenance and growth only occurs in the dark

What is the final output of photosynthesis?

• 
• 
• 
• 

In this photosynthesis word equation, what is the end product that is needed by humans to use as energy?

• oxygen

• glucose

• light energy

• water

What is the chemical equation for glucose?

• C₆H₁₂O₆

• O₂

• CO₂

• H₂O

Why is that aerobic respiration more efficient than anaerobic respiration?

• A. aerobic respiration produces less ATP.

• B. aerobic respiration needs less oxygen.

• C. aerobic respiration needs more oxygen.

• D. aerobic respiration produces more ATP.

Which of these molecules completes the process of cellular respiration? glucose + oxygen ----> water + _________

• A. ATP , carbon dioxide

• B. ADP, oxygen

• C. NADH, oxygen

• D. oxygen, ADP

What are the products of light-dependent reaction used to power the light-

independent reaction?

• Sugar and ATP

• Oxygen and NADPH

• NADPH and ATP

• NADPH and carbon dioxide