WorksheetsAmino acid General Structure and information
Total questions: 25
Worksheet time: 12mins
Trp is a three letter abbreviation for
tyrosine
threonine
tryptophan
trypsin
the simplest amino acid is
Alanine
Glycine
Valine
Proline
The first amino acid of any polypeptide chain in eukaryotes is
Alanine
Valine
Glycine
Methionine
The naturally occurring proteins consist of
a) D- amino acids
b) L-amino acids
c) Both a & b
d) None of these
which of the following is an imino acid
Glycine
Lysine
Methionine
Proline
- Choose the incorrect statement out of the followings
Only L amino acids are found in the biological system
Glycine is optical inactive
Selenocysteine is 21 st amino acid
Tyrosine is a modified amino acid
Proteins are predominantly constituted by which five major elements?
C, H,O, N & P
C, H, O, N & Fe
C, O, H , N & S
C, O ,N , H & I
Are these statements about amino acids true or false?
Amino acids undergo addition polymerisation to form polypeptides
true
false
What's the correct definition of these keywords?
zwitterions
Amino acid molecules with a negative charge on the amine group in the form of COO- and a positive charge on the carboxylic acid group in the form of NH3+
Amino acid molecules with a positive charge on the amine group in the
form of NH3+ and a negative charge on the carboxylic acid group in the
form of COO-
Amino acid molecules with a negative charge on the amine group in the form of NH3- and a positive charge on the carboxylic acid group in the form of COO+
Which of these structures is a zwitterion?
All are α-amino acids, except:
asparagine
threonine
arginine
proline
This property of amino acids refers to their ability to act as an acid or a base.
zwitterionic
chirality
UV absorptive
amphoteric
How many of the known amino acids are involved in protein synthesis?
100
46
20
22
What functional group is -NH2
Amino
Sulfhydryl
Hydroxyl
Phosphate
What functional group(s) is/are on the molecule (check all that apply)
Carbonyl Ketone
Hydroxyl
Carboxylic Acid
Amine
The general components of an amino acid are
amino group
carboxylic acid group
alpha carbon
R group side chain
all of the above
The symbol 'X' is considered as
determined amino acid
undetermined amino acid
known amino acid
One letter symbol ' N' is assigned to
Arginine
Aspartate
Asparagine
Glutamine
The unique first letter is used as its symbol in the following amino acids
Arginine, Glutamine, Asparagine
Gycine, Leucine, Valine
Glycine, Leucine, Phenylalanine
Tyrosine, Proline , Threonine
Single letter symbol for Tyrosine is
T
Y
R
N
'B' letter symbol is/are for amino acids
Glutamate and Glutamine
Glutamate and Aspartate
Aspartate and Asparagine
Asparagine and Glutamine
'W' is a single letter code for
Tyrosine
Phenylalanine
Tryptophan
Threonine
- Which of the characteristics below apply to amino acid Glycine?
Hydrophilic, basic and charged
Hydrophobic
Hydrophilic, acidic and charged
Optically inactive
