chap 18 Flashcards

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1
Q

Four types of macromolecules

A

Poteins, nucleic acid, lipids and carbs

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2
Q

What are the acidic amino acids

A

Aspartic and glutamic acid

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3
Q

What are the basic amino acids

A

Arginine and Histidine

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4
Q

What are the aromatic amino acids

A

phenylalanine, tryptophan, tyrosine

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5
Q

What are the hydroxilic amino acids

A

serine and threonine

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6
Q

what are the amidic amino acids

A

asparagine and glutamine

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7
Q

what the isoelectric point means (for an amino acid, and a protein)

A

The pH where there are equal numbers of +/- charges on the A.A.

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8
Q

chirality

A

Contains 4 different substituents

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9
Q

four levels of protein structure.

A
  • Primary – the sequence of amino acids
  • Secondary – Local folding – alpha helix and beta sheets
  • Tertiary – structure of the entire protein
  • Quaternary – How the protein interacts with other proteins
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10
Q

what are the 9 essential amino acids

A

histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine

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11
Q

collagen

A

– major structure in connective tissue

o Triple helix

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12
Q

Hemoglobin

A

o 4 polypeptide chains – heme
o Contains iron
o Transport protein – transports O2 and CO2

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13
Q

Myoglobin

A

o Very high affinity for O2

o Found in the muscles

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14
Q

Insolun

A

o Attaches to cells to allow uptake of blood glucose

Chemical properties of proteins (hydrolysis)

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15
Q

Denaturation

A
breaking down a protein to its primary structure.
o	Heat
o	Mechanical agitation
o	Detergents
o	Organic compounds
o	pH change
o	Inorganic salts
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