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Intro. To Protein Metabolism

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Year 2 (Protein Metabolism) Quiz on Intro. To Protein Metabolism, created by gina_evans0312 on 19/04/2014.
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Quiz by gina_evans0312, updated more than 1 year ago
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Created by gina_evans0312 over 12 years ago
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Resource summary

Question 1

Question
Most amino acids are generated inside the body
Answer
  • True
  • False

Question 2

Question
First ingested proteins enter the liver; which of the following are possible metabolic pathways for them?
Answer
  • Broken down for glucose
  • Sent from liver as branched chain amino acids
  • Converted urea and excreted
  • Broken down for the amino group

Question 3

Question
How are amino acids used by most organs (other than building proteins)?
Answer
  • Broken down for energy
  • To build proteins
  • To shunt metabolites around the blood

Question 4

Question
The carbon skeletons of amino acids can enter the intermediary metabolism at 7 different points to make energy
Answer
  • True
  • False

Question 5

Question
Amino acids assist in gluconeogesis by creating intermediates in the cycle that can then be used
Answer
  • True
  • False

Question 6

Question
Alanine can be converted to what?
Answer
  • Pyruvate + Glutamate
  • Ketoglutamate + Glutamate
  • OAA + Glutamate

Question 7

Question
Which amino acid can be converted to OAA/fumarate (and Glutamate) for the TCA cycle
Answer
  • Aspartate
  • Alanine
  • Glutamate

Question 8

Question
Glutamate is used to make Ketoglutamate for the TCA cycle and an NH4 for the urea cycle
Answer
  • True
  • False

Question 9

Question
Which aa is used to move excess NH3 from the peripheral tissues?
Answer
  • Arg- it can carry up to four extra NH3
  • Phe- it can carry up to four extra NH3
  • Asp- it can carry up to four extra NH3

Question 10

Question
Leu, Val and Ile are all examples of what?
Answer
  • Branched chain amino acids
  • Basic amino acids
  • Neutral amino acids

Question 11

Question
What is the use of branched chain amino acids?
Answer
  • Can be temporarily substituted for F.As in all tissues
  • Can be used to shuttle NH3 to the liver
  • Have carbon skeletons that can be attached to proteins

Question 12

Question
The inheritance of Maple Syrup Urine Disease is what kind?
Answer
  • Autosomal recessive
  • Autosomal dominant
  • Sex-Linked

Question 13

Question
In MSUD, the mutation is in Branched Chain K-Dehydrogenase, so branched chain amino acids cannot be broken down
Answer
  • True
  • False

Question 14

Question
How is MSUD treated?
Answer
  • Diet
  • Excess Glut & Ala
  • Excess Phe & Ser
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