3.1.4 Proteins Flashcards Preview

A Level Biology - Biological Molecules > 3.1.4 Proteins > Flashcards

Flashcards in 3.1.4 Proteins Deck (9)
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1

Amino acids are the monomers from which proteins are made

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2

The general structure of an amino acid is


R
I
H2N-----C------COOH
I
H

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3

N2H represents an amine group

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4

COOH represents a carboxylic acid group

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5

There are 20 amino acids that are common in all organisms , these amino acids differ only in their side group

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6

A condensation reaction between two amino acids forms a peptide bond

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7

Dipeptides are formed from the condensation of two amino acids

Poly peptides are formed from the condensation of many amino acids

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8

A functional protein may contain one or more polypeptides

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9

The biuret test is the test used to indicate the presence of proteins , biuret solution . Which is a mixture of sodium hydroxide and copper sulphate is added to a sample of the product being tested in solution form , a lilic colour change indicates a positive result

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