9.3 Muscle Metabolism

Question 1

the energy currency of the body

Answer 1

ATP

Question 2

ATP is

Answer 2

Molecule called Adenosine Tri-phosphate

Question 3

In ATP energy is stored

Answer 3

In bonds between phosphates, released by enzymes

Question 4

Aerobic means

Answer 4

The presence of oxygen

Question 5

Aerobic respiration produced

Answer 5

Much more ATP by burning fuels in the presence of oxygen

Question 6

Anaerobic respiration results in

Answer 6

Fewer ATP produced and lactic acid build up. 2 ATP from one glucose

Question 7

In glycolysis

Answer 7

Glucose becomes 2 pyruvate and 2ATP, NAD becomes NADH

Question 8

Fermentation does what

Answer 8

Regenerates NAD to be used in glycolysis by taking pyruvate and adding the H to it, forming lactic acid

Question 9

If O2 is available what happens to pyruvate after glycolysis

Answer 9

Shuttled to mitochondria and goes through Kreb’s cycle and ETC (electron transport chain) producing 32-34 ATP
and CO2

Question 10

Glycolysis and fermentation can provide ATP

Answer 10

anaerobically, lactic acid needs to be removed

Question 11

Aerobic respiration

Answer 11

Requires oxygen as electron acceptor in mitochondria, 36 net yield of ATP from one glucose

Question 12

Myoglobin

Answer 12

Cousin of hemoglobin, stores o2 in muscle tissue

Question 13

Creatine phosphate

Answer 13

Helps muscle cells regenerate ATP by contributing phosphate group

Question 14

Creatine Kinase

Answer 14

takes phosphate group off of creatine phosphate and adds it to ADP generating ATP and creatine

Question 15

Steps of ATPase cycle and sliding filament

Answer 15

Bind ATP
Split ATP (hydrolization of ADP/reset)
Release phosphate
Release ADP

Release Actin
Reset
Bind Actin
Pull

Question 16

ATP is required to release, explains

Answer 16

Rigor Mortis

Question 17

Is ATP a limiting factor or regulatory element for contraction?

Answer 17

No