Irene Gold Boards Part 1 Biochemistry Questions and Answers
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Irene Gold
Institution
Irene Gold
How many a.a.'s are incorporated into proteins?
Ans- 20
All a.a.'s exist in what form, EXCEPT for glycine?
Ans- L-form
All a.a.'s are in L-form EXCEPT for what?
Ans- glycine
Glycine is not in L-form because?
Ans- it doesn't contain a chiral carbon
define chiral carbon
Ans- different compou...
Irene Gold Boards Part 1
Biochemistry Questions
and Answers
How many a.a.'s are incorporated into proteins?
Ans- 20
All a.a.'s exist in what form, EXCEPT for glycine?
Ans- L-form
All a.a.'s are in L-form EXCEPT for what?
Ans- glycine
Glycine is not in L-form because?
,Ans- it doesn't contain a chiral carbon
define chiral carbon
Ans- different compounds at each binding site
All a.a's are what?
Ans- amphoteric
define amphoteric
Ans- can act as an acid or base
What are the essential a.a.'s?
Ans- PVT TIM HALL
phenylalanine
valine
tryptophan
,threonine
isoleucine
methionine
histidine
arginine
leucine
lysine
Histidine is __________________ in a child but not an adult
Ans- essential
What are the purely ketogenic a.a.'s?
Ans- leucine and lycine
What does lysine do?
Ans- precursor to carnitine
, What does carnitine do?
Ans- takes FA into mitochondria for B-oxidation
What are the AROMATIC a.a.'s?
Ans- phenylaline
tyrosine
tryptophate
"Phen from house tyro-L trypt"
How many of the aromatic a.a.'s are ALSO essential?
Ans- 2
What type of ring does tryptophan have?
Ans- indole ring
What are the sulfur-containing a.a.'s?
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