Organic molecules Flashcards

1
Q

What is a zwitteron?

A

a substance that has a positive and negative group in it

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2
Q

how does an amino acid exist at equilibrium?

A

acidic- the NH3+ exist and CO2H exist

neutral- the NH3+ exist and CO2 exist

basic- the NH2exist and the CO2 exist

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3
Q

What is the isoelectric point?

A

this is the point where the amino acid is neutral, no net charge

PI = (pKa1 +pKa2)/2

above the isoelectric point the amino acid will be basic,

below it will be acidic

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4
Q

What is a polypeptide?

A

a polymers with 40 to 1000 amino alpha sequences

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5
Q

What are the different levels of protien structure?

A

Primary- sequence of amino acids

secondary - alpha helix or beta pleated sheets determined by H bonding. proline cannot participate it cannot hydrogen bond. it is found at the beginning and ent of proteins

tertiary- the folding of the protein. cysteine stabilizes the tertiary structure because of the disulfide bonds

quartenary structures- the structure of the interaction of two or more proteins

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6
Q

How do you classify sugars?

A

By the functional group aldehyde(aldose) or ketone(ketose)

or by the number of carbons 6(hexose) 5(pentose)

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