The image shows a chloroplast. During photosynthesis, what happens in the chloroplast at the location labelled lumen?

Pyruvate undergoes decarboxylation.

What products of the light-dependent reactions are used in the light-independent reactions?

NADPH and ribulose bisphosphate (RuBP)

What process occurs during the light-independent reactions of photosynthesis?

RuBP is carboxylated then regenerated in the Calvin cycle.

Oxygen is released into the atmosphere.

Protons are pumped from the thylakoid space to the stroma.

Triose phosphate is converted to glycerate 3-phosphate.

What reaction, involving glycerate 3-phosphate, is part of the light-independent reactions of photosynthesis?

Glycerate 3-phosphate is reduced to triose phosphate.

Glycerate 3-phosphate is carboxylated using carbon dioxide.

Two glycerate 3-phosphates are linked together to form one hexose phosphate.

Five glycerate 3-phosphates are converted to three ribulose 5-phosphates.

What is the advantage of having a small volume inside the thylakoids of the chloroplast?

High proton concentrations are rapidly developed.

High electron concentrations are rapidly developed.

Photosynthetic pigments are highly concentrated.

Enzymes of the Calvin cycle are highly concentrated.

How is the proton gradient generated in chloroplasts during photosynthesis?

Flow of electrons from carrier to carrier in the thylakoid membrane causes pumping of protons across the thylakoid membrane.

Light causes protons to flow through protein channels in the thylakoid membrane.

Light splits water molecules in the stroma, causing the release of protons.

Protons are pumped across the thylakoid membrane using energy from ATP.

In the light-dependent stage, what happens immediately after light hitting PSII?

H+ are pumped across the thylakoid membrane

In the light-dependent stage, electrons from PSII travel along electron carriers and slow down. What is the energy released from this directly used to do?

pump protons outside the thylakoid membrane

In the light-dependent stage, water is split into 2e- + 2H+ + O 2 . What happens to these electrons?

they enter photosystem II (PSII)

they travel along electron carriers

In the light-dependent stage, water is split into 2e- + 2H+ + O 2 . What happens to the protons (H + ) that are produced?

they are used in the proton concentration gradient

they combine with oxygen to form water

they make the stroma more acidic for enzymes to work

they help electrons to move along the carriers

In the light-independent stage, during which of the following reactions are both ATP and NADPH used?

glycerate-3-phosphate --> triose phosphate

ribulose phosphate + carbon dioxide --> unstable 6C compound

unstable 6C compound --> glycerate-3-phosphate

In the light-independent stage what happens to 5/6 of the triose phosphate?

it is used to regenerate ribulose bisphosphate (RuBP)

it is converted backl to glycerate-3-phosphate

In the light-independent stage what happens to 1/6 of the triose phosphate?

it is used to regenerate ribulose bisphosphate (RuBP)

it is converted to triose phosphate

it is converted back to glycerate-3-phosphate

How is oxygen produced during photosynthesis?

Water molecules are split using energy from light.

Water molecules are split using energy from ATP.

Carbon dioxide molecules are split using energy from ATP.

Carbon dioxide molecules are split using energy from light.

IB Bio Topic 8

Authored by Charles Martinez

Biology

11th - 12th Grade

NGSS covered

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MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which process is common to photosynthesis and cell respiration?

Photolysis

The Calvin cycle

The Krebs cycle

Chemiosmosis

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The diagram shows the structure of a chloroplast.

Where is chlorophyll located?

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

ATP is needed to change products of the carboxylation of ribulose bisphosphate into triose phosphate.

What other substance is also needed?

Rubisco

NADP

NAD

Reduced NADP

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is reduced by Photosystem I ?

ADP

NADP

NAD

FAD

Which process occurs during the light-dependent reaction of photosynthesis?

ATP, CO₂ and H₂O are produced.

CO₂ is used to produce carbohydrates.

ATP and O₂ are produced.

RuBP is phosphorylated.

Which technological advance enabled Calvin to perform his lollipop experiment on the light-independent reactions of photosynthesis in 1949?

Methods for tracing radioactive carbon incorporated in molecules produced by the alga Chlorella

Development of electron microscopes enabling the molecules produced by the alga Scenedesmus to be viewed

Methods for changing the wavelength of light shining on the alga Scenedesmus contained in the lollipop

Development of X-ray diffraction techniques enabling the molecules produced by the alga Chlorella to be identified

What is used to reduce NADP in the light-dependent reactions of photosynthesis?

Conversion of ATP into ADP+P_i

Electrons from Photosystem I

Protons from the thylakoid space

Oxygen released by photolysis of water

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IB Bio Topic 8

Which process is common to photosynthesis and cell respiration?

The diagram shows the structure of a chloroplast.

Where is chlorophyll located?

ATP is needed to change products of the carboxylation of ribulose bisphosphate into triose phosphate.

What other substance is also needed?

What is reduced by Photosystem I ?

Which process occurs during the light-dependent reaction of photosynthesis?

Which technological advance enabled Calvin to perform his lollipop experiment on the light-independent reactions of photosynthesis in 1949?

What is used to reduce NADP in the light-dependent reactions of photosynthesis?

The electron micrograph shows part of a plant cell.

Where do the light-independent reactions of photosynthesis take place?

Which molecule would first contain ¹⁴C if the alga Chlorella was grown in the presence of light and radioactive CO₂?

The image shows a chloroplast.

During photosynthesis, what happens in the chloroplast at the location labelled lumen?

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Biology

IB Bio Topic 8

Which process is common to photosynthesis and cell respiration?

The diagram shows the structure of a chloroplast. Where is chlorophyll located?

ATP is needed to change products of the carboxylation of ribulose bisphosphate into triose phosphate. What other substance is also needed?

What is reduced by Photosystem I ?

Which process occurs during the light-dependent reaction of photosynthesis?

Which technological advance enabled Calvin to perform his lollipop experiment on the light-independent reactions of photosynthesis in 1949?

What is used to reduce NADP in the light-dependent reactions of photosynthesis?

The electron micrograph shows part of a plant cell. Where do the light-independent reactions of photosynthesis take place?

Which molecule would first contain 14C if the alga Chlorella was grown in the presence of light and radioactive CO2?

The image shows a chloroplast.During photosynthesis, what happens in the chloroplast at the location labelled lumen?

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Biology

The diagram shows the structure of a chloroplast.

Where is chlorophyll located?

ATP is needed to change products of the carboxylation of ribulose bisphosphate into triose phosphate.

What other substance is also needed?

The electron micrograph shows part of a plant cell.

Where do the light-independent reactions of photosynthesis take place?

Which molecule would first contain ¹⁴C if the alga Chlorella was grown in the presence of light and radioactive CO₂?

The image shows a chloroplast.

During photosynthesis, what happens in the chloroplast at the location labelled lumen?