Cellular Respiration Quest

Cellular Respiration is

the process by which cells convert glucose and oxygen into energy, carbon dioxide, and water. 4 steps

1. glycolysis

2. pyruvate oxidation

3. Citric Acid Cycle/ the Krebs cycle

4. oxidative phosphorylation

Cell Resp Equation

glucose + oxygen→ carbon dioxide+ water+ ATP & heat

Respiratory + cardiovascular system provide

oxygen necessary to do reaction

Cell resp occurs in the..

mitochondria

Parts of mitochondria

include the outer membrane

intermembrane space

inner membrane

cristae

mitochondrial matrix.

outer membrane

outer membrane of mitochondria

intermembrane space

fluid between outer + inner membranes of mitochondria

cristae

folds of the inner membrane of mitochondria

matrix

fluid inside inner membrane of mitochondria

Step 1 of Cell resp

Glycolysis: breaks glucose into pyruvate

inputs: glucose, ADP, NAD+, FAD (lil ATP)

outputs: pyruvate, ATP, NADH, FADH2

location: cytoplasm of cell

Step 2 of Cell resp if O2 Present

aerobic respiration
Pyruvate Oxidization breaks pyruvate into Acetal CoA

inputs: pyruvate, NAD+

outputs: Co2, NADH, Acetal CoA

location: mitochondrial matrix

Step 3 of aerobic reparation

Citric Acid Cycle/Krebs cycle breaks acteal CoA into lil more ATP

inputs: acetal CoA, FAD, NAD+, ADP

outputs: Co2, ATP, NADH, FADH2

location: mitochondrial matrix

Step 4 of aerobic respiration

Oxidative Phosphorylation uses electrons along electron transport chain to make most ATP

inputs: O2, NADH, FADH2, ADP

outputs: ATP, H2O, FAD, NAD+

location: across inner membrane

Oxidative Phosphorylation step 1

electron transport chain: electrons from charged electron carriers: NADH and FADH2: travel across membrane powering active transport of H+ OUT of the matrix

Oxidative Phosphorylation step 2`

Chemiosmosis: H+ ions flow back through ATP synthase, via facilitated diffusion, driving the production of ATP

flow of electrons

come from glucose → reduce O2 & create water

steps of cell resp if no O2

anerobic respiration/fermentation = same process except pyruvate is turned into lactic acid(animals) so ATP is only produced by glycolysis step

• is ethanol in yeast + plants

• removes electrons in NADH so it can be reused in glycolysis (oxidation)

oxidation

loss of electrons

reduction

gaining of electrons