Photosynthesis: Chapter 10 Overview

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What is the primary function of Rubisco in phase 1 of photosynthesis?

Producing sugars directly from sunlight

Regenerating RuBP

Catalyzing the fixation of CO2 to RuBP (correct)

Breaking down G3P to release energy

What molecule is utilized for carbon reduction in phase 2 of photosynthesis?

3-phosphoglyceric acid (G3P) (correct)

RuBP

O2

CO2

What is the consequence of Rubisco binding O2 instead of CO2 in photosynthesis?

Increased ATP synthesis

Stimulation of photorespiration (correct)

Reduced sugar production

Enhanced CO2 fixation

How does prolonged hot, dry conditions impact the process of photosynthesis in plants?

Causes closure of stomata, hindering CO2 entry and O2 exit Signup and view all the answers

What environmental condition can cause plants to shift from photosynthesis to photorespiration?

High oxygen concentration in the leaf Signup and view all the answers

In C4 plants, where does atmospheric CO2 fixation occur?

Mesophyll cells Signup and view all the answers

How do CAM plants avoid photorespiration?

By fixing CO2 via the C4 cycle and PEP carboxylase during the night Signup and view all the answers

What is the role of rubisco in C4 plants?

Calvin cycle Signup and view all the answers

Which plant uses the C4 pathway to avoid photorespiration?

C4 plants Signup and view all the answers

What is the primary function of PEP carboxylase in atmospheric CO2 fixation?

Fixing CO2 in mesophyll cells Signup and view all the answers

Which organism incorporates chloroplasts into its own digestive tract cells after slurping them out of algal cells?

Sea slug (Elysia chlorotica) Signup and view all the answers

What is the primary function of the light-independent reactions in photosynthesis?

To make sugars using ATP and NADPH Signup and view all the answers

What is the role of photosystem II in the process of photosynthesis?

Generate a proton-motive force for ATP synthesis Signup and view all the answers

What is the fate of excited electrons in photosynthetic pigments?

Passed to an electron acceptor Signup and view all the answers

Which term best describes the arrangement of chlorophyll molecules into photosystems?

Antenna complex assembly Signup and view all the answers

What is the main function of the 'antenna complex' in a photosystem?

Absorb photons from sunlight Signup and view all the answers

How do Photosystem I and Photosystem II work together to maximize photosynthetic efficiency?

Produce more ATP and NADPH for sugar synthesis Signup and view all the answers

Photosynthesis: Chapter 10 Overview

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