1-A mutation has changed an isoleucine residue of a protein to Glutamic acid, which statement best describes its location in a hydrophilic exterior-
a) On the surface since it is hydrophilic in nature
b) In side the core of the protein since it is hydrophobic in nature
c) Any where inside or outside
d) Inside the core of protein since it has a polar but uncharged side chain
2- Glycine and proline are the most abundant amino acids in the structure of-
3- Some proteins contain additional amino acids that arise by modification of an amino acid already present in a peptide, examples include-
a) 4 -hydroxy proline
b) 5- hydroxy Lysine
c) Gamma Amino Butyric Acid
d) All of the above
4- Choose the incorrect statement out of the followings-
a) Only L amino acids are found in the biological system
b) Glycine is optical inactive
c) Tyrosine is a modified amino acid
d) Seleno cysteine is 21 st amino acid
5- Choose a nano peptide out of the followings-
d) All of the above.
6- Which out of the following amino acids carries a net positive charge at the physiological p H ?
d) None of the followings.
7- Which out of the following amino acids is a precursor for a mediator of allergies and inflammation?
c) Phenyl Alanine
8- Mother of a mal nourished child has been instructed to include a complete protein in diet for her child, which out of the followings proteins should be recommended?
c) Soy Protein
9- All of the below mentioned amino acids can participate in hydrogen bonding except one –
10- All of the following amino acids are both glucogenic as well as ketogenic except –
d) Phenyl alanine
11- Which out of the following amino acid is a precursor of niacin (Vitamin)?
12- The greatest buffering capacity at physiological p H would be provided by a protein rich in which of the following amino acids?
13- Which of the following peptides is cyclic in nature-?
c) Met encephalin
14- Which out of the followings is not a fibrous protein?
d ) Keratin
15) -Which of the following amino acid is a limiting amino acid in pulses?
16)- Which out of the following is not a haemo protein ?
c) Glutathione peroxidase
17- All the below mentioned proteins are metalloproteins except-
b) Xanthine oxidase
c) Lactate dehydrogenase
d) Superoxide dismutase
18- Which out of the following is a peptide antibiotic?
19- Choose the Anticancer peptide out of the followings-
c) Cytosine Arabinoside
d) Dideoxy Inosine
20- Which of the following amino acids is most compatible with an α- helical structure?
21- The highest concentration of cystine can be found in-
22- In scurvy, which amino acid that is normally part of collagen is not synthesized?
c) Hydroxy Alanine
d) Hydroxy Proline
23- A child with tall stature, loose joints, and detached retinas is found to have a mutation in collagen. Which of the following amino acids is the recurring amino acid most likely to be altered in mutations that distort collagen molecules?
24- Which one of the following amino acids may be considered a hydrophobic amino acid at physiological p H of 7.4?
c) Aspartic acid
25- Which of the characteristics below apply to amino acid Glycine?
a) Optically inactive
b) Hydrophilic, basic and charged
d) Hydrophilic, acidic and charged
26- Which of the following amino acids in myoglobin, a globular protein, is highly likely to be localized within the interior of the molecule?
c) Aspartic acid
27- Which of the amino acids below is the uncharged derivative of an acidic amino acid?
28-Choose the correct category for milk protein casein out of the followings
b) Phospho protein
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