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WorksheetsAmino Acids
Total questions: 12
Worksheet time: 7mins
Proteins are made up of a combination of how many unique amino acids?
10
20
25
50
What is the basic structure of an Amino acid?
basic group, aliphatic group, hydrogen and a R side chain
acidic group, amino group, hydrogen and a R side chain
positively charged group, acidic group, hydrogen and an aromatic group
negatively charged group, basic group, hydrogen and an aliphatic group
How many essential amino acids are there?
3
9
12
20
Simplest amino acid that is optically not active (has no stereo- isomers)
Glycine
Serine
Isoleucine
Glutamine
The chirality of an amino acid results from the fact that its a carbon that:
has no net charge
is a carboxylic acid
is bonded to 4 different chemical groups
is symmetric
Amino acids are ampholytes because they can function as either a(an):
acid or base
neutral molecule or an ion
polar or non polar molecule
positive or negatively charged
In a neutral solution, most amino acids exist as:
positively charged compounds
zwitterion molecules
negatively charged compounds
hydrohobic molecules
The central carbon of an amino acid is called?
alpha carbon
beta carbon
chiral carbon
asymmetric carbon
Which of the following statements is most likely to be true of non-polar R groups in aqueous solution?
They are hydrophillic and found buried within proteins
They are hydrophillic and found on protein surfaces
They are hydrophobic and found within proteins
They are hydrophobic and found on protein surfaces
Two amino acids that contain sulfur atoms are:
cysteine and serine
cysteine and threonine
methionine and cysteine
methionine and serine
A tripeptide has
3 amino acids and 1 peptide bond
3 amino acids and 2 peptide bonds
3 amino acids and 3 peptide bonds
3 amino acids and 4 peptide bonds
Insulin is an exceptional molecule (made up of 51 amino acids), it is an example of:
a monosaccharide
a polysaccharide
a nucleotide
a protein
