10 questions for nutritions First to answer gets best answer!!?

[vicky]

In comparison to the composition of carbohydrates and fats, which element found in proteins makes them unique?
A) Nitrogen
B) Oxygen
C) Carbon
D) Hydrogen

What amino acid is used to synthesize the neurotransmitter serotonin and the vitamin niacin?
A) Tyrosine
B) Glycine
C) Methionine
D) Tryptophan

All of the following are contained in an amino acid except
A) an aldehyde group.
B) an acid group.
C) a central carbon atom.
D) an amino group.

Upon eating a hamburger, in what organ is the hydrolysis of its proteins initiated?
A) Stomach
B) Mouth
C) Large intestine
D) Small intestine

What is the fate of excess dietary protein?
A) After absorption, the extra amino acids will be rapidly degraded
B) After absorption, extra proteins will be synthesized and stored for use when protein intake returns to normal
C) Digestion will be decreased by 30 to 60%, resulting in less absorption
D) After absorption, the liver will store the extra amino acids

What is the name of the inactive form of the protein-splitting enzyme in the stomach?
A) Peptidase
B) Propeptidase
C) Propepsin
D) Pepsinogen

When two amino acids are chemically joined together, the resulting structure is called a
A) disaccharide.
B) polypeptide.
C) dipeptide.
D) diglyceride.

The body's usual response to detection of antigens is to synthesize
A) antibodies.
B) erythrocytes.
C) mutations.

D) whey protein.

Which of the following illustrates a deamination reaction?
A) Addition of an amino group to form a new amino acid
B) Addition of an amino acid to form a larger peptide chain
C) Removal of the amino group from an amino acid
D) Separation of an amino acid from a peptide chain

Which of the following food proteins has the best assortment of essential amino acids for the human body?
A) Rice
B) Gelatin
C) Egg
D) Corn

What is a "limiting" amino acid in a protein?
A) A nonessential amino acid present in high amounts, which inhibits protein synthesis
B) An essential amino acid present in insufficient quantity for body protein synthesis to take place
C) An amino acid that limits the absorption of other essential amino acids by competing with them for transport sites within the GI tract
D) An amino acid of the wrong structure to be utilized for protein synthesis efficiently

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