Energy Systems

Question 1

Length of time ATP will last before depletion

Answer 1

3 seconds

Question 2

Time at which ATP-PC threshold is reached

Answer 2

10 seconds

Question 3

Coupled reaction

Answer 3

the product of one reaction used in another

Question 4

exothermic

Answer 4

reactions produce energy

Question 5

endothermic

Answer 5

reactions require energy

Question 6

ATPase

Answer 6

enzyme catalysing breakdown in ATP

Question 7

creatine kinase

Answer 7

enzyme catalysing breakdown in PC

Question 8

Duration of lactic acid system

Answer 8

1-3 minutes

Question 9

GPP, LDH, PFK

Answer 9

enzymes of the lactic acid system controlling breakdown of glycogen to pyruvate and then to lactate

Question 10

energy yield of lactic acid system

Answer 10

2 ATP per molecule of glucose

Question 11

energy yield of ATP-PC system

Answer 11

1 ATP per moecule of PC

Question 12

sarcoplasm

Answer 12

site of reactions for ATP-PC and lactic acid systems

Question 13

Kreb’s Cycle

Answer 13

set of reactions where oxaloacetic acid combines with Acetyl co-A to produce citric acid before being broken back down to oxaloacetic acid.

Question 14

energy yield of aerobic glycolysis

Answer 14

38 ATP

Question 15

mitochondrial cristae

Answer 15

site of electron transport chain

Question 16

mitochondrial matrix

Answer 16

site of krebs cycle

Question 17

end product or aerobic glycolysis

Answer 17

energy, co2 and h2o

Question 18

energy continuum

Answer 18

relative contribution of energy system determined by intensity and duration of activity

Question 19

OBLA

Answer 19

accumulation of blood lactate at or above 4mmol/l of blood

Question 20

EPOC

Answer 20

excess post exercise energy consumption used to restore body to pre-exercise levels

Question 21

alactacid debt

Answer 21

2/3 mins, 50% recovery in 30 seconds, restore myoglobin levels, requires 3-4 l of o2

Question 22

lactacid debt

Answer 22

lactate converted to glucose, protein or co2, h2o and energy. 5-8 l of o2 and takes 1-24 hours

Question 23

glycogen replenishment

Answer 23

most within 10-12 hours but could take upto 24 hours. high carb diet within 2 hours of completion can speed recovery

Question 24

active recovery

Answer 24

light exercise will speed removal of lactate