511. An insulin molecule consists of _________ polypeptide chains?
A. 1
B. 2
C. 3
D. 4

512. The windpipe or trachea lies?
A. Dorsal to oesophagus
B. Ventral to oesophagus
C. Lateral to oesophagus
D. None of these

513. A bond formed by linkage between -OH of carboxyl group of one amino acid and H of amino group of another amino acid which releases water is called__________?
A. Phosphodiester linkage
B. Glycosidic bond
C. Peptide bond
D. Hydrogen bond

514. Total number of amino acids in a hemoglobin molecule are__________?
A. 554
B. 564
C. 574
D. 584

515. Which structure of protein gives information aboutnumber and sequence of amino acids in it_______________?
A. Primary structure
B. Secondary structure
C. Tertiary structure
D. Quaternary structure

516. Locomotory structures are not found in which of the following group?
A. Amoebas
B. Zooflagellates
C. Ciliates
D. Apicomplexans

517. Hemoglobin molecule exhibits which structural organization of proteins___________?
A. Primary structure
B. Secondary structure
C. Tertiary structure
D. Quaternary structure

518. In an aqueous environment the most stable tertiary conformation is that in which _________ amino acids are buried inside the conformation?
A. Hydrophobic
B. Hydrophilic
C. Basic
D. None of these

519. Which of the following statement is incorrect about RNA_________________?
A. The pentose sugar in it is Ribose.
B. It contains Adenine Guanine Thymine and Cytosine
C. It is present in the nucleoli
D. It may be folded back on itself to give double helical characteristics.

520. Protein coasts of viruses are synthesized in____________?
A. Lytic cycle
B. Lysogenic cycle
C. Both a & b
D. All of these

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