Module 5 Flashcards
1
Q
What is protein?
A
- component of all living cells
- made of of amino acids
- Every AA contains nitrogen (proteins are 16% N by weight)
2
Q
Essential Amino Acids
A
histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.
3
Q
Nonessential Amino acids
A
alanine, arginine, asparagine, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine and tyrosine.
4
Q
how many peptide bonds are in a tripeptide?
A
2
5
Q
primary structure:
A
linear order of amino acids in a protein
6
Q
Secondary structure:
A
shapes within a protein
- 3 plated sheet
- helix
7
Q
Tertiary structure:
A
Final 3 dimensional shape of protein
8
Q
The quality of a protein is determined by:
A
- Digestibility of a protein
- Types of AA: all plant protein is incomplete protein
- Proportion of Amino acids
9
Q
What is a good quality protein?
A
- All essential AA is proportions needed formal requirements
- well digested
10
Q
N- retention:
A
Amount of N kept in the body after eating foods is superior to that of Free AA1
