Bio- 25% Unit 3 Review - Intro to Energy & Photosynthesis

Photosynthesis is the process by which energy from the sun is used to make ________.

• water (H2O)

• chlorophyll

• glucose

• carbon dioxide (CO2)

Which best describes light-independent reactions?

• They are the first stage of photosynthesis.

• They utilize the energy stored in ATP and NADPH to create glucose.

• They use carbon dioxide to synthesize proteins.

• They create ATP and NADPH that is used to make oxygen.

Which of the following is the correct chemical equation for photosynthesis?

• 6CO2 + 6H2O + light energy --> C6H12O6 + 6O2

• C6H12O6 + 6O2 --> 6CO2 + 6H2O + light energy

• C6H12O6 + 6H2O --> 6CO2 + 6O2 + light energy

• 6CO2 + C6H12O6 + light energy --> 6H2O + 6O2

Which of the following is a green photosynthetic pigment that absorbs light and is found in thylakoids of the chloroplast?

• grana

• mitochondria

• chlorophyll

• stroma

Referring to the image, the second step of photosynthesis begins at A with the absorption of this molecule.

• O₂

• CO₂

• glucose

• H₂O

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

The main pigment in photosynthesis is ​ (a)   and it is found inside of ​ (b)  

• chlorophyll
• chloroplasts
• cells
• ATP
• mitochondria

Plants give off _____ that animals need to take in;  animals give off _____ that plants need to take in.

• oxygen; carbon dioxide
• nitrogen; oxygen
• carbon dioxide; oxygen
• helium; nitrogen

What are the products of photosynthesis?

• water and carbon dioxide
• oxygen and glucose
• oxygen and carbon dioxide
• oxygen and water

What are the reactants (what's needed) for photosynthesis?

• glucose and oxygen
• light, water, and carbon dioxide
• ATP and water
• glucose, carbon dioxide, light