anaerobic respiration

Question 1

describe the process of glycosis

Answer 1

glucose goes to phospholyated glucose (2ATP–> 2ADP)
phosphorlyated glucose goes to GP (3C)
GP goes to pyurvate (4ADP –> 4ATP) (2NAD+ –> 2NADH)

Question 2

compare the structure of lactate and pyurvate and explain what happens to pyurvate (3)

Answer 2

lactate and pyruvate both have 3c
pyruvate has hydrgoen added to it to form lactate so it has been reduced
reduced coenzyme is required for the converstion

Question 3

explain the production of lactate in muscle cells

Answer 3

lactate is produced during anaerobic respiration
glucose is converted into pyurvate
pyurvate is then converted into lactate
as there is no oxygen to be the final electron acceptor in the ETC the krebs cycle and oxidative phosphorlyation cannot take place
lactate diffuses into the blood and transported to the liver

Question 4

describe the role of the liver

Answer 4

liver removes lactate as it is converted into pyurvate through oxidation
NAD is reduced and pyruvate enters the kreb cycle
complete oxidation of glucose can now ccur
LDH is required for the conversion of lactate

Question 5

explain why a reduced production of ATP would lead to cramps (3)

Answer 5

there is less ATP to bind to myosin heads
myosin is unable to detach from actin
actomyosin cross bridge doesnt break
muscles remain contracted