Test 2: Bio 1H - Photosynthesis & ATP

During which stage of photosynthesis is oxygen produced?

• Calvin cycle

• electron chain

• light dependent

• 
  light independent

Examine the diagram of a chloroplast.

What are the products of the light-dependent and light-independent reactions, labeled Y and Z, respectively?

• 
  Y: carbon dioxide; Z: water

• 
  Y: cellulose; Z: glycerol

• Y: oxygen; Z: glucose

• 
  Y: sugars; Z: oxygen

Examine the diagram of a chloroplast.

What product of the light-dependent reactions, labeled X in the diagram, is needed by the light-independent reactions?

• 
  C₆H₁₂O₆

• FADH₂

• 
  NADPH

• O₂

The diagram shows the complete process of photosynthesis.

What is represented by the letters P and Q in the diagram?

• 
  Both P and Q represent light-dependent reactions.

• Both P and Q represent light-independent reactions.

• P represents the light-dependent reactions, and Q represents the light-independent reactions.

• P represents the light-independent reactions, and Q represents the light-dependent reactions.

The light-dependent reactions are powered by energy from sunlight.

Products W and X of these light-dependent reactions are required for the light-independent reactions of photosynthesis.

What are the identities of molecules W and X?

• 
  ATP and NADPH

• 
  C₆H₁₂O₆ and fatty acids

• 
  ADP and glycerol

• NADH and FADH₂

The diagram shows how a plant interfaces with its environment in various ways.

Which series of steps best represents nutrition?

• 
• 
• 
• 

The graph shows the amount of oxygen absorbed and released by a plant during one day.

At which point during the day was the rate of photosynthesis the highest ?

• P

• Q

• R

• S

An incomplete equation for photosynthesis is given.

Which table correctly identifies the missing compounds, X and Y, and their chemical formulas?

• 
• 
• 
• 

Several students performed a controlled experiment in which they measured the rates of photosynthesis (as a function of oxygen production) in pea plants which were grown under a wide range of wavelengths (colors) of light. The graph shows their results.

The students’ initial hypothesis was that green light would result in the highest rates of photosynthesis for the pea plants. Should the results lead the students to confirm or reject their hypothesis?

• They should accept their hypothesis because all plants are green, so all plants must be using green light to perform photosynthesis.

• They should accept their hypothesis because the plants seem to have their maximum photosynthetic rates under green light.

• They should reject their hypothesis because the plants have higher photosynthetic rates under red and blue light colors.

• 
  They should reject their hypothesis because there does not seem to be a significant difference in photosynthesis rates among the colors.

The diagram illustrates photosynthesis.

What compound does the Elodea absorb from the water during this process?

• 
  ATP

• 
  carbon dioxide

• 
  chlorophyll

• glucose