cellular respiration (test 2)

Question 1

aerobic respiration equation

Answer 1

C6H12O6 + 6O2 = 6Co2 + 6H2O + Energy (opposite of photosynthesis)

Question 2

cellular respiration breathing

Answer 2

• inhaled oxygen is consumed in cellular respiration
• co2, produced as a by-product, is then exhaled

Question 3

aerobic vs anaerobic respiration

Answer 3

• aerobic: uses oxygen to produce a large amount of energy
• anaerobic: doesnt use oxygen, produces less atp but does it quickly

Question 4

cristae

Answer 4

• folds in inner mitochondria membrane
• phospholipid bilayer of mitochondria

Question 5

glycolysis

Answer 5

• occurs in cytosol
• enzymes break glycose into 2 pyruvate molecules
• some atp is invested to redistribute chemical bonds
• yields 2 ATP molecules and 2 electron carrying NADH molecules
• NO OXYGEN NEEDED

Yields: 2 pyruvate, 2 ATP, 2 NADH

Question 6

krebs cycle

Answer 6

• pyruvate (3 carbon) moves into mitochondira
• pyrvuate is oxidized into Acetyl Co-A (2 carbon)
• Produces ATP & electron carriers
• Acetyl Co-A combines w/ a 4 carbon molecule, making citrate
• Citrate is rearranged+oxidized, making 3 NADH, 1 FADH2, and 1 ATP per turn
• og 4 carbon molecule is re-created, cycle restarts

TOTAL (w/ glycolysis): 4 ATP, 8 NADH, 2 FADH2

Question 7

etc

Answer 7

• NADH & FADH2 deliver electrons to inner mitochondrial membrane
• H+ drawn across membrane by electrons flowing across transport chain
• H+ move into intermembrane compartment
• As protons accumulate in the intermembrane compartment, proton gradient causes net. flow back across membrane into matrix
• Flow of H+ down gradient powers ATP formation as it moves through ATP synthase
• Electron transport phosphorylation requires O2
• O2 takes spent electrons from electron transport system, combines w/ H+ to form H2O

Question 8

lactic acid fermentation

Answer 8

• occurs in muscles when not enough o2
• temp way to get energy

Question 9

carbon cycles in ecosystems

Answer 9

• photosynthesis removes carbon from the atmosphere and fixes it into biomass
• respiration and combustion release carbon into the atmosphere as co2

Question 10

aerobic respiration

Answer 10

• process of using glucose and oxygen to produce ATP

Question 11

matrix

Answer 11

• fluid enclosed by inner membrane
• phospholipid bilayer of mitochondria

Question 12

atp harvest per glucose

Answer 12

• Glycolysis: 2 ATP
• Krebs: 2 ATP
• ETC: 32 ATP
• Total: 36 atp