NBCE Part 1 Biochemistry Irene Gold Review – Practice Questions and Answers | Verified Exam Preparation

NBCE Part 1 Biochemistry
Irene Gold review
Questions and Answers


All amino acids are L-form except?


Ans- glycine




T/F - All amino acids are amphoteric?


Ans- T




What does amphoteric mean?


Ans- Can act as either an acid or a base




What are the essential amino acids?

,Ans- P = phenylalanine


V = valine


T = tryptophan


T = threonine


I = isoleucine


M = methionine


H = histidine


A = arginine


L = leucine


L = lycine




T/F - histidine is essential in a child but not an adult?


Ans- True




What are the purely ketogenic amino acids?


Ans- Leucine and Lysine

,What amino acid is the precursor for carnitine?


Ans- Lysine




What is the function of carnitine?


Ans- takes FA into mitochondria for beta-oxidation




What are the aromatic amino acids?


Ans- phenylalanine


tyrosine


tryptophan




What is unique about tryptophan?


Ans- It has an indole ring




What are the sulfur-containing amino acids?


Ans- cysteine, methionine, and cystine

, 2 cysteines linked together make what?


Ans- cysteine




What are the branched chain amino acids?


Ans- isoleucine, leucine and valine




Maple syrup urine disease is a defect in?


Ans- the bodies ability to breakdown branched chain amino acids




What are the acidic amino acids?


Ans- aspartate and glutamate




What does aspartame contain that makes it neurotoxic in excess?


Ans- aspartic acid (aspartate)




What are the basic amino acids?


Ans- histidine, lysine and arginine