IB Photosynthesis

Drag the molecule to the correct location on the diagram.

a

b

c

C₆H₁₂O₆

NADPH

O₂

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

Order the following steps of photosynthesis in chronological order.

• An electron from chlorophyll a becomes "excited" and jumps into an ETC

• RuBP is regenerated through 10 molecules of triose phosphate

• An electrochemical gradient is established with a high concentration of H+ inside of the lumen of the thylakoid. 

• NADPH and ATP is used to convert G3P into TP

• ATP is generated through chemiosmosis and ATP synthase.

Tags

NGSS.HS-LS1-5

Match the following:

• ADP

• NADPH

• Charged Battery

• 
• Drained Battery

• NADP⁺

• ATP

• 

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NGSS.HS-LS1-5

NGSS.HS-LS2-5

Click the location of the light dependent reactions.

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

Click the location of the light independent reactions.

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NGSS.HS-LS2-5

Sort the steps of photosynthesis into the light dependent or light independent reactions.

Groups:

(a) Light Dependent

,

(b) Light Independent

• Produces Oxygen

• Occurs in the stroma

• Produces NADP+

• Produces RuBP

• Requires light

• Occurs in the thylakoid membranes

• Produces ATP

• Produces Glucose

• Produces NADPH

• Produces ADP

Tags

NGSS.HS-LS1-5

Throwback Question: The graph shows atmospheric oxygen levels over time. About 2.5 billion years ago, a significant rise in atmospheric oxygen occurred. What was the cause of this rise?

• Photosynthesis by non-vascular land plants.

• Photosynthesis by vascular land plants.

• Oxygen produced by photosynthetic bacteria being released from the ocean into the atmosphere.

• Volcanic activity

Tags

NGSS.HS-ESS1-6

What does the Rf value in thin layer chromatography represent?

• The distance travelled by the pigment front in a fixed time period

• The distance from the origin to the solvent front at the end of the experiment

• The ration of distances travelled by the pigment and solvent

• The concentration of pigment applied to the chromatography plate

The action spectra for two different types of photosynthetic organisms are shown. Ulva, or seas lettuce, is a green marine alga composed of two layers of cells. The action spectrum for crop plants was plotted from an average of 22 species of plants.

• Ulva photosynthesizes more than crop plants at red wavelengths.

• Crop plants photosynthesize more than Ulva in green light.

• Photosynthesis by Ulva is highest in red light while that of crop plants is highest in blue.

• Both have zero photosynthesis at 750 nm.

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

A summary diagram of photosynthesis is shown. Which molecule represents ATP?

• A

• B

• C

• D

Tags

NGSS.HS-LS1-5