Glycosidic Bond

Q.

What is meant by peptide linkage?

Q.

Illustrate a glycosidic, peptide and a phosphodiester bond.

Q.

The glycosidic bond formation does not :

1. Involve the interaction of the H atom of one monosaccharide and the OH of another monosaccharide

2. involve addition of water molecule

3. Leads to the formation of a polysaccharide/oligosaccharide

4. Leads to the release of water molecule

Q.

A bond between two amino acids is

1. Hydrophobic bond

2. All the above

3. Amide bond

4. Ionic bond

Q. DNA polymerase links nucleotide by forming which type of bond :

1. Phosphodiester bond
2. Hydrogen bond
3. Glycosidic bond
4. Ester bond

Q.

What are lyases involved in?

Q.

Which process is involved in the formation of glycosidic bonds in a polysaccharide?

Q. Bonds that do not exist in tertiary structure of proteins:

1. Covalent bonds
2. Phosphodiester bonds
3. Hydrophobic interactions
4. Ionic bonds

Q. Two glucose molecules are joined together by

1. Peptide bond
2. Glycosidic bond
3. Hydrogen bond
4. 3', 5' - Phosphodiester bond

Q. Hydrolysis of milk sugar gives rise to:

1. Two molecules of lactose
2. Two molecules of glucose
3. One molecule of glucose and one molecule of fructose
4. One molecule of glucose and one molecule of galactose

Q.

Illustrate a glycosidic, peptide and a phospho-diester bond.

Q. Glycosidic linkage present between adjacent glucose units of starch or glycogen is generally

1. $\beta 1⟶4$
2. $\alpha 1⟶4$
3. $\alpha 2⟶1$
4. $\beta 2⟶1$

Q. Why does cytosine make pair with guanine and not with adenine?

1. Polar nature of C and A
2. C-A pair would not reach across the double helix
3. C-A pair would be wider than double helix
4. Hydrogen bond forming functional groups are not complementary between C and A

Q. Formation of both peptide bonds and glycosidic bonds

1. Involve addition of a phosphate group to the precursor molecules
2. Involve addition of carboxyl group
3. Would not require a catalyst in biological systems
4. Involve removal of a water molecule

Q. What is annealing?

Q. Which of the following bond is formed during the condensation of monosaccharides?

1. Covalent bond
2. Glycosidic bond
3. Ionic bond
4. Peptide bond

Q. In a disaccharide monomers are linked with each other through .............

1. Hydrogen bonds
2. Ester bonds
3. Glycosidic bonds
4. Peptides bonds

Q. Which carbon of a sugar forms glycosidic bond in a nucleotide having a cytosine base linked to it?

1. 2
2. 4
3. 1
4. 5

Q. Glycosidic linkage at place of branching in starch and glycogen is

1. $\alpha 1⟶6$
2. $\alpha 1⟶4$
3. $\beta 1⟶4$
4. $\beta 1⟶6$

Q. Glycosidic bond is

1. $C-O-C$
   
2. $CONH$
   
3. $>C=O$
   
4. $CHO$

Q. Which of the following bond in DNA links a 3' pentose sugar to a 5' pentose sugar?

1. Hydroxyl bond
2. Phosphodiester bond
3. Glycosidic bond
4. None of the above

Q. Which of the following is true for competitive inhibition?

1. $K_m$ decreases but $V_{max}$ increases
2. $K_m$ increases but $V_{max}$ decreases
3. $K_m$ increases but $V_{max}$ remains the same
4. $K_m$ decreases but $V_{max}$ remains the same

Q.

rennin acts on milk protein and converts....

as caesinogen to ceasin in many references but in your test answer is given as....caesin to paraceasin...please make sure which one is correct

Q.

What is meant by enol?

Q. A bond is formed when an aldo- or keto- group in a sugar molecule combines with a hydroxyl group in another sugar unit.

1. peptide
2. glycosidic
3. keto
4. glyceride

Q. What is N-glycosidic linkage

Q. Formation of both peptide and glycosidic bonds involves

1. Esterification
2. Hydration
3. Dehydration
4. Acidification

Q. Milk sugar is made up of

1. maltose and fructose
2. sucrose and fructose
3. glucose and fructose
4. glucose and galactose

Q. Which of the following macromolecules is a protein?

1. Cholesterol
2. Glycogen
3. Keratin
4. Chitin

Q. Polysaccharide monomers are linked by

1. Peptide bonds
2. Glycosidic bonds
3. Hydrogen bonds
4. Phosphodiester bonds