PHOTOSYNTHESIS:Calvin Cycle

PHOTOSYNTHESIS: Calvin Cycle

​Objectives:

• ​State the specific products generated from water, sunlight and carbon dioxide.

• ​Explain the importance of water, sunlight and carbon dioxide in the process of photosynthesis.

CALVIN ​CYCLE (Light-Independent Reaction)

After ​the sun's energy is converted and packaged into ATP and NADPH, the plant cell has the fuel needed to build food called carbohydrate molecules. How is this carbohydrate formed?

​CO₂ + RuBP--> 6-carbon molecule

​6-carbon molecule --> 2 3-PGA

CARBON FIXATION

Multiple Choice

Which molecule does CO₂ attach itself to?

• ATP

• NADPH

• oxygen

• Ribulose 1,5-bisphosphate (RuBP)

Multiple Choice

The attachment of CO₂ and RuBP results to a 6-carbon molecule. What happens next to this 6-carbon molecule?

• It splits into two 3-carbon molecules

• It becomes G3P.

• It turns into PGAL molecule.

• It turns into glucose phosphate.

Multiple Choice

In the Calvin cycle, carbon from CO₂ is added to one molecule of RuBP  to create _____

• 2-3 carbon molecule

• an unstable 6-carbon molecule

• PGA

• RuDP

Multiple Choice

The Calvin Cycle occurs in the ____

• chlorophyll

• enzyme, ATP synthase

• stroma

• thylakoid membrane

REDUCTION

Multiple Choice

Which molecules supply electrons to the 3-C molecule in reducing the carbon dioxide into two (2) 1,3-bisphosphoglycerate?

• ATP

• NADPH

• oxygen

Multiple Choice

Which molecule supplies electrons to the 1,3-bisphosphoglycerate to become glyceraldehyde 3-phosphate (G3P)?

• ATP

• NADPH

• oxygen

• RuBP

REGENERATION

Multiple Choice

The 5-Carbon molecules that the Calvin Cycle starts and ends with, is called _____________.

• PGA

• RuBP

• G3P

• RuDP

Multiple Choice

How many molecules of glyceraldehyde-3-phosphate (G3P) are needed to form 3 molecules of RuBP?

• 2

• 3

• 4

• 5

FORMATION OF GLUCOSE AND OTHER CARBOHYDRATES

​

Multiple Choice

How many G3P molecules make one (1) glucose molecule?

• 1

• 2

• 3

• 4

Multiple Choice

What happens to the NADPH and ATP molecules after they are used in the Calvin Cycle?

• They recycle back to the light reaction.

• They are used to make G3P.

Multiple Choice

At which phase of photosynthesis is sunlight needed?

• light-dependent reaction

• light-independent reaction

Multiple Choice

At which phase of photosynthesis is water essential?

• light-dependent reaction

• light-independent reaction

Multiple Choice

At which phase of photosynthesis is carbon dioxide needed?

• light-dependent reaction

• light-independent reaction

Open Ended

Considering the byproducts of photosynthesis, what should we do have to have air to breathe and foods to eat?

Open Ended

What does the lesson on photosynthesis made you realize?

​CONGRATULATIONS FOR ACTIVELY PARTICIPATING!