Which of the following is an imino acid?
The amino acid sequences of thousands of different proteins from many species have been determined using principles first developed by?
1.Watson and Crick
1.Nature of solvent
1.Nature of solvent
The relationship between oxygen concentration and the fraction of binding sites occupied in myoglobin can best be described as ________
1.Linear with a positive slope
4.Linear with a negative slope
2.Occurrence of alanine and glycine residues
4.Interaction between R groups spaced three residues apart
When compared to the first immune response to the same antigen, which of the following is not a hallmark of the secondary immune response?
1.Antibody is generated fast
2.Many antibodies is produced
3.Antibody is generated without T-cell help
4.Antibody produced has a greater affinity for the antigen
When the velocity of enzyme activity is plotted against substrate concentration, which of the following is obtained?
1. Straight line with negative slope
2.Straight line with positive slope
Which of the following catalyzes the reversible degradation of 2-phosphoglycerate to phosphoenolpyruvate?
Which of the following enzyme catalyzes a reaction that introduces reduced nitrogen ito cellular metabolism?
1.Bacterial dinitrogenase reductase
3.Bacterial glutamine synthase
4. Bacterial dinitrogenase oxidase
1.It provides a template for how the proteins should fold
2.It degrades proteins that have folded properly
3.It degrades proteins that have folded improperly
4.It rescues proteins that have folded improperly and allowed them to refold properly
1.Mannose & Glucose
2.Glucose & Ribose
3.Galactose & Mannose
4. Glucose & Galactose
2.Hydrogen bonds between water molecules
3.Van der Waals forces of attraction
Which of the following mixture in aqueous solution of equimolar concentration acts as a buffer solution?
1.NH4 OH(excess) + HCl
2.HNO3 + NaOH
3.CH3 COOH + NaOH(excess)
4.H2 SO4 + KOH
1.Resolution improves as column length increases
2. Mobile phase is a porous solid material kept in the column with appropriate chemical characteristics
3.Stationary phase is a buffered solution that percolates through the mobile phase
4.Large proteins exit the column faster than tiny proteins
1.Watson and Francis Crick
3.Anton van Leeuwenhoek