Topic 5.1 - aerobic respiration. 5.2 - Glycolysis 5.3 - Link reaction Flashcards
what does ATP stand for?
Adosine Triphosphate
what are the 2 types of cellular respiration?
- aerobic
- anaerobic
aerobic?
- involving/requiring oxygen
Anaerobic?
- requiring an absence of Oxygen
what is cellular respiration
process which takes energy from food and turns it into ATP
what is the basic unit of life
a cell
why does a cell need energy?
- to carry out many metabollic processes
where does the energy for cells come from?
- energy comes from the chemical bonds in molecules
equation for aerobic respiration?
word and number
glucose + oxygen -> carbon dioxide + water + energy
C6H12O6 + O2 = CO2 = H2O + ATP
what kind of reaction is aerobic respiration?
exothermic/endothermic
- exothermic
substrate?
used in a reaction/reactants
what is the name for ingredients used in respiration (reactants)
- respiratory substrate
where is energy stored
in bonds
draw ATP
how is energy made?
what bonds break? btwn what?
what catalyses?
- when covalent bonds break btwn the 2 phosphate bonds
- catalysed by the enxyme ATPase
can an aerobic respiration reaction be reversed?
yes
- use energy from food to ‘recharge’ ATP
wheredoes aerobic respiration happen?
mitochondria
where does anaerobic respiration happen?
cytoplasm
OILRIG
Oxidastion is loss, Reduction is gain
hydrogen is on par with what happens to electrons here
what else could happens in Oxidation?
- loses Hydrogen
- could gain some Oxygen
hydrogen is on par with what happens to electrons here
What else could happens in reduction
- gain Hydrogen
- Could lose some Oxygen
where does glycolysis happen?
cytoplasm
whats the aim of the link reaction
- to take 2 pyruvate in to mitochondria
Aerobic respiration is a chain of reactions.
name the different reactions that happen
- glycolysis
- link reaction
- Kreb’s cycle
- Electron chain reaction
which part of the aerobic respiration processes makes ATP
- Electron chain reaction
what does glycolysis do?
does it need Oxygen?
- splits the respirstory substrate (glucose) into smaller molecules so it can enter th mitochondria through the link reaction
what are the 2 stages of glycolysis called
- phosphorylation
- oxidation
whats happens in phosphorylation?
simple
- energy is used to make adjustments so that the 6-C molecule can be split evenly intotwo 3-C pyruvate molecules
whats happens in Oxidation in glycolysis?
Simple
- ATP and nicotinamide-adenine dinucleotide (NADH) are produced
products of Glycolysis?
- 2x NADH
- 2x ATP
- 2x pyruvate molecules
where does the NADH from glycolysis and the liunk reaction go to?
- electron transfer chain
what are the products of the link reaction and waht goes where
- 2x NADH (goes to ETC)
- 2x CO2 (waste product)
- 2x Acetal CoA (coenzyme A) - (goes into the Kreb’s cycle)
glycolysis steps + names of molecules:
- 6C sugar -> Phosphorylation -> Glucose 6-phosphate-> lysis-> 2x 3C sugar (Glycerate 3-phosphate -> 2xpyruvate
Link reaction steps + names of molecules and use:
- decarboxylation -> oxidation -> addityion of CoA
- 2 pyruvate -> Decarboxylation -> Oxidation -> Acetyl grp -> add CoA
- -> Acetyl CoA
CoA is needed to carry acetyl grp into Krebs Cycle
Where does Link reaction Happen
- Matrix
Glycolysis happens where?
Cytoplasm