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Cell Respiration and Photosynthesis (Higher Level) Chapters 8.1 and 8.2 in the red IB Biology
Book Standard Level Information is in chapters 3.7
and 3.8
100 100
200 200
400 400
300
400
8.1 8.2 Test Questions Diagrams
300 300 300
200
400
200
100
500 500 500 500
100
2 ATP Molecules6 NADH Molecules2 FADH2 Molecules
4 CO2 Molecules
What are the results of the kreb cycle?
1,2
Light Dependent and Light Independent Reactions
What kind of reactions does photosynthesis consist of?
1,3
Accepting electrons at the end ofthe electron transport chain.
during which process are oxygen molecules directly involved during cellular respiration?
1,4
Label and draw the diagram of the mitochondria
2,1
Oxidation: loss of electrons, gainof oxygen, loss of hydrogen, results in many
C-O bonds, results in compound with lower potentialenergy
Reduction: gain of electrons, loss of oxygen, gain of hydrogen, results in many C-H bonds, results in a
compound with higher potential energy
Compare Oxidation and Reduction
2,2
1- Involves electron transport chain embedded in the membrane ofthe thylakoids
2- Energy is released when electrons are exchanged from one carrierto another
3- Released energy is used to actively pump hydrogen ions into the thylakoid space
4- Hydrogen ions come from the stroma5- Hydrogen ions diffuse back into the stroma through the channels of
ATP synthase6- ATP synthase catalyses the phosphorylation of ADP to form ATP
Explain photophosporylation in terms if chemiosmosis
2,3
III only
Which of the following features is/are present in mitochondria but not in choloroplast?
I- DNA and ribosomesII- outer and inner membranes
III- cristae
2,4
Draw and Label the structure of a Chloroplast
3,1
The controlled release of energyfrom organic compounds in cells
to form ATP (with or without oxygen)
Define Cell Respiration
3,2
1- occurs with in the stroma2- ATP and NADPH are produced
by light dependent reactions to provide energy for light independent
reactions 3- The result of light independent reactions is
glucose4- These reactions begin and end with the same
substance
State 4 facts of light independent reactions
3,3
-Hydrogen-ATP
-Carbon Dioxide
What chemical substances are used during the manufacture of organic molecules in
photosynthesis?
3,4
Glycolysis
What process is this diagram showing?
4,1
Lysis
When fructose- 1, 6- bisphosphate splits into two 3- carbon sugars called glyceraldehyde-
3-phosphate, the process involves what?
4,2
-Photosystem 2 then Photosystem 1- Photosystem 2 accepts the photons at
680 nm-Photosystem 1 accepts the photons at
700 nm
Light dependent reactions consist of two photosystems. What is the order these
photosystems come in (Photosystem 1 and Photosystem 2) and how many nm are the
photons when each phosystem accepts them?
4,3
Glycerate 3- phosphate (GP)
What is the first identifiable product of carbon dioxide fixation in photosynthesis?
4,4
Oxaloacetate
When acetyl coa from the link reaction it combines with a 4- carbon compound called
what?
5,1
Matrix of the Mitochondria
Where in the mitochondria does the link reaction take place?
5,2
-Electrons-Hydrogen Ions
-Oxygen
When photolysis occurs and splits the water molecules during light dependent reactions
what are formed?
5,3
1- temperature2- CO2 concentration
State two factors in the environment of a plant, apart from light intensity, that can affect the rate of photosynthesis in the
plant.
5,4
ComplexCarbohydrates
When triose phosphate leaves the cycle they become sugars that are used to make what?
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