BIOSCI 101 Final Questions Flashcards
What does Amphibolic Mean?
Uses both anabolic and catabolic processes.
What is Anabolism?
Plants synthesising molecules through photosynthesis.
What is Catabolism?
Organic molecules and oxygen producing ATP.
Where would we find Brown Fat?
Mammals in cold climates.
What is Basal Metabolic Rate?
Energy expenditure at rest.
What can Gibb’s Free Energy be used for?
To predict max change in concentrations between reactants and products.
What Inhibits PFK?
High ATP and low pH.
What Activates PFK?
AMP.
What is the Cori Cycle?
Lactate is converted back to pyruvate, then into glucose.
What does each Glucose Produce in CAC?
2ATP, 4CO2, 6NADH, 2 FADH2.
What is Leigh’s Disease?
Mutation in C-ring of ATP synthase, proton slippage, brain disorder.
How much ATP does the Shuttles Produce?
Malate Aspartate - 2.5 ATP
G3PDH - 1.5 ATP
Why is ATP Number not Exact?
Membranes leak when hot, NADH from glycolysis has two fates.
How is Pyruvate Kinase Reversed in Glycolysis?
PEPCK and pyruvate carboxylase using 2 ATP and NADH.
How is PFK Reversed in Glycolysis?
F1,6BP
How is Hexokinase Reversed in Glycolysis?
G5P.
What is a Normal vs Diabetic BGL?
Normal - 4.5-5mM
Diabetic - >11mM
How Long does it take for the Fuel of the Brain to Switch from Glucose to Ketone Bodies?
8 days.
What is Creatine Phosphate Useful for?
Sustained power - 15 seconds.
Which Gradients do Mitochondria use?
Both proton and electrical gradient.
Which Gradient do Chloroplasts use?
Proton gradient only - more dependant on pH.
How does Photosystem 2 Harvest Light?
Light hits PS2, electron jumps up, transferred to Q, goes to cytochrome complex, oxidises Q through Q cycle.
How does Photosystem 1 Harvest Light?
Light hits PS1, electron jumps up, 2 fates; electrons can move down string, NAD can be reduced to NADH.
