Unit 2 Quiz: Kreb's Cycle/ETC Flashcards
(27 cards)
What is another name for Kreb’s Cycle?
The citric acid cycle
Where does the Kreb’s cycle take place?
In the matrix (fluid) of the mitochondria
Where does the Kreb’s cycle take place?
In the matrix (fluid) of the mitochondria
Is Kreb’s cycle aerobic or anaerobic?
Aerobic
What are the products of the Kreb’s cycle for 1 spin, 1 molecule?
For one:
- 3 NADH
- 1 FADH2
- 1 ATP
- 2 CO2
What are the products per glucose
For two:
- 6 NADH
- 2 FADH
- 2 ATP
- 8 CO2
Where does the ETC take place?
On an inner membrane of the mitochondria (cristae)
Is ETC aerobic or anaerobic?
Aerobic
What does ETC need to function?
Series of membrane proteins (cytochromes), as it occurs on the membrane of the mitochondria
Look at diagram need to label
On notes
What does the ETC take from the Krebs Cycle?
It takes the NADH and the FADH and gives up the H+ ions and electrons to the cytochrome (protein channels), electrons are then transported through the chain of the cytochromes, electrons pull the H+ ions and they accumulate in the intermembrane space, a high concentration of the H+ ions creates a concentration gradient and gradient drives H+ ions through protein channel, giving the energy to synthesize ATP, then once electrons are accepted by O2, H+ ions are also picked up and form H2O (electrons need to move out and form with oxygen and H+ for “cycle” to work)
How much ATP does ETC make?
34 ATP
Which is the most efficient in producing ATP?
ETC makes 34 out of the 38
How much ATP is made per glucose in eukaryotes?
36 actual is 30
Why is only 30 ATP created?
- reduced yield because of “leaky” inner membrane
- Chemiosis: the use of proton gradient for purposes other than ATP synthesis
Types of anaerobic respiration
Anaerobic: use of inorganic molecules
Fermentation: use of organic molecules as final electron acceptor
What forms as anaerobic in humans
Lactic acid forms
What forms in yeast?
Alcohol formation
Why is anaerobic bad?
Produces fewer ATP’s
Much less efficient
This is bc ETC is bypassed, because no oxygen means cannot form water and get rid of electrons not enough electrons and products toxic byproducts acids (lactic acid) and alcohols
Diagram explain what happens in lactic acid fermo
- Creates 2 ATP
- Creates pyruvate
- NADH takes H to make lactate
What breaks down amino acids what is the process called?
Deamination process remove amino group, remainder of amino acid is converted to a molecule that enters glycolysis or the Krebs Cycle
What is it called when fatty acids break down?
Beta oxidation
Why is there a reduced yield in eukaryotes?
- “leaky” inner membrane
- chemiosis: the use of the proton gradient for purposes other than ATP synthesis
Does anaerobic respiration make less ATP?
True because less effective no oxygen shuts down etc; oxygen is needed to continue the cycle to pull out electrons (and form water)
- not enough electrons and produces toxic byproducts acids (lactic acids) and alcohols
