Energy Test

The ultimate/original source of all energy is from

• the sun
• carbohydrates
• ATP
• lipids

Which plant cell organelle uses light energy to produce sugar in the process of photosynthesis?

• chloroplast
• mitochondria
• nucleus
• ribosome

What is the name of a stack of thylakoids, which is pictured in the image below?

• stroma
• matrix
• grana
• membranes

Which of these organisms does NOT do photosynthesis?

• algae
• bacteria
• plants
• animals

Why is the presence of chlorophyll in plants important?

• It assembles the sugar.
• It creates ATP to power the process.
• It captures water to be used in the process.
• It is a pigment that absorbs solar energy.

The process of photosynthesis can be represented by the equation:

• light + C6H12O6 + O2 → CO2 + H2O
• O2 + H2O → light + C6H12O6 + CO2
• light + C6H12O6 + CO2 → O2 + H2O
• light + CO2 + H2O → C6H12O6 + O2

Which statement accurately describes the energy needs for photosynthesis and cellular respiration?

• Solar energy is needed for cellular respiration but not for photosynthesis.
• Chemical energy in the form of glucose is needed for both cellular respiration and photosynthesis.
• Chemical energy in the form of glucose is needed for photosynthesis, and solar energy is needed for cellular respiration.
• Solar energy is needed for photosynthesis, and chemical energy in the form of glucose is needed for cellular respiration.

During the light-dependent reactions, sunlight is absorbed. Where in the chloroplast does this occur?

• matrix
• thylakoid membrane
• inner membrane
• stroma

Ultimately photosynthesis produces the sugar glucose. Glucose is made during the second step of photosynthesis which takes place in the stroma of chloroplasts. This second step of photosynthesis that produces glucose is called:

• the Krebs cycle
• the light-independent reactions
• the light-dependent reactions
• glycolysis

During photosynthesis, different gases move in and out of plant cells. Which phrase best represents the net flow of gases involved in photosynthesis?

• Carbon dioxide moves in; oxygen moves out .
• Oxygen moves in; carbon dioxide moves out.
• Carbon dioxide moves in; nitrogen moves out.
• Oxygen moves in; nitrogen moves out.