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JEOPARDY REVIEW. Photosynthesis and Cellular Respiration. TRUE (A) or FALSE (B): The Light Dependent Reactions use Carbon Dioxide. The reaction center The ETC NADP+ reductase carotenoids.

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Photosynthesis and cellular respiration

JEOPARDY REVIEW

Photosynthesis and

Cellular Respiration


TRUE (A) or FALSE (B):

The Light Dependent Reactions use Carbon Dioxide.


The reaction center

The ETC

NADP+ reductase

carotenoids

Energy from the Light Harvesting Complex (pigments) are passed from molecule to molecule until they reach what?


PS II then PS I

PS I then PS II

PS III, PS II, then PS I

PS 0, PS 1, PS II

What is the correct order of the photosystems?


stroma

Thylakoid space

Thylakoid membrane

Intermembrane space

Where are the photosystems located?


In cyclic energy flow, both ETC’s are used

In noncyclic energy flow, both ETC’s are used

In cyclic energy flow, the ETC before PSII is used

In cyclic energy flow, the ETC before PSI is used

Both B & C

Both B & D

Which of the following statements regarding cyclic & noncyclic electron flow are true?


In cyclic energy flow, only ATP is made

In noncyclic energy flow, ATP & NADPH are made

Cyclic electron flow produces more energy than noncyclic energy flow

Both A and B

All of the above are true

What is the difference in energy produced between cyclic and noncyclic energy flow?


Thylakoid space/ lumen

Intermembrane space

Stroma

cytoplasm

In photosynthesis, before ATP is generated, where is the H+ concentration greatest?


Thylakoid space/ lumen

Intermembrane space

Stroma

cytoplasm

In photosynthesis, where is the ATP/ NADPH produced?


Carbon dioxide

Chlorophyll a

Water

Glucose

In photosynthesis, what molecule does oxygen originate from?


What is a photon?


Green & yellow light

Green light only

Blue & red light

Blue light only

Which colors of light are most effectively absorbed by chlorophyll?


1) Chlorophyll b of PS I

2) Chlorophyll a of PS I

3) Primary electron acceptor

4) Oxygen

5) NADP+

When electrons reach the end of the E.T.C. after leaving PS II, what takes those electrons?


ADP

Chlorophyll a of PS II

Primary electron acceptor

Oxygen

NADP+

After light energy excites electrons from PS I and those electrons “fall down” the next E.T.C., what takes those electrons?


carbon fixation, reduction, regeneration of RuBP

reduction, regeneration of RuBP, carbon fixation

regeneration of RuBP, carbon fixation, reduction

carbon fixation, regeneration of RuBP, reduction

What is the correct order for the phases of the Calvin Cycle?


A 3-C sugar (GP) is phosphorylated and reduced

5 molecules of G3P are regenerated into RuBP using 3 ATP

Inorganic carbon dioxide becomes part of an organic molecule

None of the above

What happens in the Carbon Fixation phase of the Calvin Cycle?


A 3-C sugar (GP) is phosphorylated and gains electrons

5 molecules of G3P are regenerated into RuBP using 3 ATP

Inorganic carbon dioxide becomes part of an organic molecule

None of the above

What happens in the Reduction phase of the Calvin Cycle?


The ETC

Glycolysis

Link Reaction

Krebs Cycle

Both C & D

B, C, & D

Where does carbon dioxide come from in cellular respiration?


Krebs cycle

Link reaction

Glycolysis

ETC

A and C

A, B, & C

B & C

In cellular respiration, where are 2 ATP made through substrate level phosphorylation?


Cristae

Inner membrane

Intermembrane

Mitochondrial matrix

Where in the cell does the Kreb’s cycle take place?


1 NADH: 2 ATP; 1 FADH2 : 3 ATP

1 NADH: 3 ATP; 1 FADH2 : 2 ATP

1 NADH: 1 ATP; 1 FADH2 : 2 ATP

1 NADH: 2 ATP; 1 FADH2 : 2 ATP

What is the “ATP exchange rate” for NADH and FADH2?


10%

20%

30%

40%

50%

60%

Approximately what % of the energy in glucose is converted to ATP?


2


2


24

4


Stroma

Vein

Mesophyll cell

Stomata

Bundle sheath cell

Through which structure does carbon dioxide enter the leaf?


redox reactions

oxygen

proton motive force

chemiosmosis

What is actually driving the synthesis of ATP (providing the energy to make ATP) in Cellular Respiration?


Rubisco

ATP synthase

ATP reductase

Dehydrogenase

What is the name of the enzyme generating ATP?


  • the electrons from FADH2 are dropped off farther down the ETC than NADH (at a lower energy level)

  • fewer H+ ions are pumped across the membrane

  • Only 1 electron is dropped off at the ETC instead of 2

  • Both A and B

  • Both A and C

Why doesn’t FADH2 result in the same amount of generated ATP as NADH?


Intermembrane space

Matrix

Cytoplasm

None of the above

In cellular respiration, when H+ ions are pumped across through ETC protein channels, where are they more concentrated?


Intermembrane space

Matrix

Cytoplasm

None of the above

In cellular respiration, where is ATP produced due to oxidative phosphorylation?


Rubisco

Acetyl-CoA

RuBP

Oxaloacetate

In the Kreb’s cycle, acetyl-CoA binds to a molecule that will be regenerated by the end of the cycle. What is the name of that molecule?


It has taken electrons

It has given electrons

It has been reduced

Both A and C

If a molecule has been oxidized, what does that mean?


What is meant by the term “facultative anaerobe?”


It has taken electrons

It has given electrons

It has been reduced

Both A and C

If a molecule is a “reducing agent,” what does that mean?


Recycle NADH without an ETC

Glycolysis can continue to produce 2 ATP

It allows mitochondria & ETC to operate without oxygen

Oxidative phosphorylation can occur with NAD+ as the final electron acceptor

Both A & B

Both C & D

Why is lactic acid fermentation a benefit to your muscle cells?


Methanol

Ethanol

Acetylaldehyde

Lactic acid

What is the end product of alcoholic fermentation?


0, NADH isn’t recycled

1

2

3

How many steps does it take to recycle NADH in alcoholic fermentation?


no useful product is formed

glucose

G3P

RuBP

What is the end result of photorespiration?


Carbon dioxide is being transported to a bundle sheath cell

Oxygen outcompetes carbon dioxide for the active site of rubisco

Rubisco has a very high affinity for carbon dioxide

Rubisco has a very high affinity for oxygen

Why does photorespiration occur?


C-3 plants use 3 different cells to fix carbon dioxide & C-4 plants use 4 cells

C-3 plants use the same cell for everything but C-4 plants use 1 cell for carbon fixation but a different cell for reduction & regeneration of RuBP (the Calvin cycle is divided into 2 cells)

C-3 plants use the same cell for everything but C-4 plants have a step prior to the Calvin cycle that fixes carbon dioxide. This molecule is then moved to a different cell where the entire Calvin cycle occurs

C-3 plants, use the same cell for everything but C-4 plants bring in their carbon dioxide at night which is then used in the Calvin cycle the next day

How is carbon fixation in a C-4 plant different than in C-3 plants?


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