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Ch 7
Photosynthesis
60
Biology
Undergraduate 1
04/07/2011

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Cards

Term
What molecule is Oxidized during the Light Reaction
Definition
Water
Term
What does water oxidize into during the Light Reaction?
Definition
Oxygen
Term
Where does the Light Reaction occur?
Definition
Thylakoid Membrane
Term
What light spectrum does Chlorophyll a and b absorb best?
Definition
Violet, Blue, and Red
Term
What molecule is made on the ETC by photosystem 2?
Definition
ATP
Term
Where is the Hydrogen ion gradient formed?
Definition
Thylakoid Space.
Term
Where does the Calvin Cycle occur?
Definition
In the Stroma
Term
How many G3P molecules combine to make one molecule of glucose?
Definition
2
Term
What type of plant is able to avoid photorespiration in really hot, really high light intensity, and really dry areas?
Definition
C4
Term
For CAM plants when do CO2 molecules enter the plant?
Definition
Night
Term
What is the Balanced Reaction for Photosynthesis?
Definition
6CO2+6H2O-->C6H12O6+6O2
Term
Heterotrophs consume food while?
Definition
Autotrophs make their own food
Term
How does CO2 enter the leaf?
Definition
Through the Stomata
Term
What is the fluid within the chloroplast called?
Definition
Stroma
Term
Where are the Cholorphyll and other Pigments that absorb light found?
Definition
Inside the Thylakoid Membrane
Term
Is photosynthesis a exergonic or endergonic reaction?
Definition
Endergonic
Term
Is CO2 oxidized or reduced?
Definition
Reduced
Term
What is CO2 reduced to?
Definition
C6H12O6 (Glucose)
Term
Is Water oxidized or reduced?
Definition
Oxidized
Term
What is water oxidized to?
Definition
O2 (Oxygen)
Term
Which coenzyme is oxidized when CO2 is being reduced?
Definition
NADP+ --> NADPH
Term
Which 2 Chemical energy molecules are produced during the Light Reaction and used in the Calvin Cycle?
Definition
ATP and NADPH
Term
What is the end product of glucose?
Definition
G3P
Term
What is the source for electrons for photosystem 2?
Definition
Water
Term
What is the source of electrons for Photosystem 1?
Definition
The electrons made on the ETC
Term
How many carbon molecules does RuBP have?
Definition
5
Term
In C3 plants when the weather is hot and dry stomata close. As a result what does RuBP combine to instead of CO2?
Definition
O2
Term
CO2 joins with what 3 carbon molecule to form what 4 carbon molecule?
Definition
PEP+ CO2--> Oxaloacetate
Term
In C4 plants where does the Calvin Cycle occur?
Definition
In the Bundle Sheath cells
Term
In C3 plants where does the Calvin Cycle occur?
Definition
Mesophyll cells
Term
What are substrates(reactants) of RuBP carboxylase?
Definition
RuBP and CO2
Term
In a C4 plant are there cholorplasts in the Bundle Sheath cells?
Definition
Yes
Term
Are there chloroplasts in the Mesophyll cells of the C4 and C3 plant?
Definition
Yes in both
Term
In a C3 plant do the Bundle Sheath cells contain chloroplasts?
Definition
No
Term
What are substrates(reactants) of PEP carboxylase?
Definition
CO2 and PEP
Term
Which two molecules combine to start the Calvin Cycle Reaction?
Definition
CO2 and 5-carbon molecule RuBP
Term
What enzyme facilitates the joining of CO2 and RuBP?
Definition
RuBP carboxylase.
Term
5 RuBP + CO2 --> ?
Definition
6 3PG
Term
What forms when a hydrocarbon skeleton of G3P is added to Nitrogen?
Definition
Amino Acids
Term
If the weather is hot and dry C3 plant leaves close to lessen water loss. What happens then to the relative concentrations of CO2 and O2 in the leaves?
Definition
CO2 decreases: O2 increases
Term
Does photorespiration result in C3 plants?
Definition
Yes
Term
Does photorespiration result in C4 plants?
Definition
No
Term
In CAM plants when does the CO2 enter the mesophyll cells?
Definition
At night
Term
The fixation of CO2 forms a molecule with 3 or 4 carbon atoms?
Definition
4
Term
If an environment is bright and hot with limited rainfall which type of plant survives well?
Definition
C4
Term
If an environment is cooler which type of plant survives well?
Definition
C3 plants
Term
If an environment is dry (either hot or cool) which type of plant survives well?
Definition
CAM
Term
Which molecule contributes electrons to reducing CO2?
Definition
NADPH
Term
This reaction produces 2 NADH, 2 Pyruvate, and 2 ATP from substrate level ATP synthesis. Name this reaction?
Definition
Glycolysis
Term
Metabolic Pathway
Definition
A series of reactions that are interconnected. For example: Glycolysis, Prep reaction, and Citric Acid Cycle
Term
Compare the PH of Thylakoid space and stroma.
Definition
Thylakoid Space is more acidic than the Stroma because of the higher concentration of H+ ions.
Term
Where is the ETC in oxidative phosphorylation?
Definition
Thylakoid Membrane
Term
Where is the Hydrogen ion gradient in oxidative phosphorylation?
Definition
Thylakoid Space
Term
Where is ATP synthase in oxidative phosphorylation?
Definition
Thylakoid Membrane
Term
Which coenzymes are reduced?
Definition
NADP+
Term
What high energy molecule is formed by the reduction of NADP+?
Definition
NADPH
Term
Where is NADPH used in oxidative phosphorylation?
Definition
The Calvin Cycle
Term
The creation of the hydrogen ion gradient requires what type of transport?
Definition
Active
Term
3PG reduces into?
Definition
BPG
Term
BPG reduces to?
Definition
G3P
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