Biology Cell Metabolism Review

What is photosynthesis?

• The process where plants make oxygen for animals.
• The process where plants use energy from the sun to take in starches
• The process where plants use oxygen and glucose to make ATP
• The process where plants use energy from the sun to combine CO2 into sugars

What is chlorophyll?

• The green pigment in plants that absorbs solar energy.
• The organelle in plants where photosynthesis takes place.
• The structure that stores water in plants.
• Pores in leafs that allow for gas exchange.

What do plants use CO₂ and H₂O to make?

• Glucose
• ATP
• Oxygen
• Proteins

Where do plants get their energy for photosynthesis?

• Sugars
• Fertilizer
• Soil
• Sun

True or false:  The oxygen released in photosynthesis comes from CO₂.

• True
• False, it comes from Splitting H₂O
• False, plants don't release oxygen, they release carbon.
• False, oxygen is released from the light reactions, not photosynthesis.

Which is the equation for photosynthesis in word form?

• Plants assemble sugars and release oxygen by combining CO₂ and water; using the energy from the sun.
• Plants  make energy from sunlight.
• Plants make oxygen for animals from sunlight.
• Plants use oxygen to break down sugars into chemical energy, water, and CO₂

Which is the equation for photosynthesis?

• CO₂ + ATP + O₂ = H₂O + C₆H₁₂O₆
• O₂ + H₂O + Sunlight = C₆H₁₂O_{6 +} CO₂
• CO₂ + H₂O + Sunlight = C₆H₁₂O₆ + O₂ 
• Sunlight + C₆H₁₂O_{6 =} CO₂ + H₂O

In which molecular form do plants store their food?

• Fats
• Proteins
• Nucleic Acids
• Starches

Why is ATP important?

• It is the universal energy currency for all life.
• Plants use it in the place of oxygen
• It is made into glucose during respiration
• It is the main component of fertilizer in plants.

If ATP is produced in the light reactions, why do the dark (light independent) reactions of photosynthesis need to be carried out?

• Plant cells cannot use ATP and must convert it to another form during the dark reactions.
• ATP is too unstable for long term storage and must be converted to starches during the dark reactions.
• ATP is not produced during the light reactions, it is produced during the dark reactions. 
• ATP is converted to ADP during the dark reactions.