Quiz for L14 Flashcards
Mixed muscle protein synthesis measure protein synthesis of the following fractions:
a. Sarcoplasmic and myofibrillar
b. Collagen, myofibrillar and mitochondria
c. Sarcoplasmic, collagen and mitochondria
d. Collagen, myofibrillar, mitochondria and sarcoplasmic
Collagen, myofibrillar, mitochondria and sarcoplasmic
Which of these are NOT a system of protein breakdown:
a. Transcripton
b. caspase
c. Calpain
d. Lysosomal
Transcription
Describe the process of transcription
Copying of DNA to MRNA
Describe the process of translation
Reading of mRNA to make polypeptide chains
Describe the process of post translational modifications
Folding of chains into a useful structure
What % of total amino acid uptake by the liver during exercise is made up of alanine?
50%
When BCAA are oxidised the nitrogen group is generally used to form:
Glutamate and then alanine
Which of the following is true about the decarboxylation of alpha ketoacids involving branched chain alpha-keto acid dehydrogenase:
a. Occurs in the mitochondria
b. Is activated by phosphorylation
c. Is inactivated by dephosphorylation
d. All of these answers are correct.
Occurs in the mitochondria
Which of these amino acids has 2 nitrogens?
a. Leucine
b. Isoleucine
c. Glutamine
d. Glutamate
Glutamine
What are the stages of translation?
Initiation, elongation and termination
What are the stages of muscle protein synthesis?
Transcription, translation, folding
Which protein breakdown system is most likely to be used in the muscle following exercise?
Calpain system
What % of muscle is lost per decade?
6%
In untrained individuals how does mitochondrial protein synthesis respond post resistance exercise?
It increases
