91Ó°ÊÓ

Starch is converted into maltose by : (a) invertase (b) amylase (c) diastase (d) zymase

The general molecular formula for disaccharide is : (a) \(\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}\) (b) \(\mathrm{C}_{10} \mathrm{H}_{20} \mathrm{O}_{10^{+}}\) (c) \(\mathrm{C}_{12} \mathrm{H}_{20} \mathrm{O}_{10}\) (d) \(\mathrm{C}_{12} \mathrm{H}_{2} \mathrm{O}_{10}\)

Deficiency of vitamin-D causes: (a) night blindness (b) rickets (c) scurvy (d) loss of appetite

Sucrose on treatment with conc. HCl produces: (a) glucose (b) fructose (c) both (a) and (b) (d) laevulinic acid

Enzymes having two sites are: \(\quad\) IAIIMS 2002] (a) conjugate enzyme (b) apoenzyme (c) holoenzyme (d) allosteric enzyme

Among the following, the achiral amino acid is: (a) 2 -ethylalanine (b) 2-methylglycine (c) 2-hydroxymethyl serine (d) tryptophen

The nucleic acid base having two possible binding sites is: [AIIMS 2004] (a) thymine (b) cytosine (c) guanine (d) all of these

Which of the following statements is true for protein synthesis (translation)? |AIIMS 2005] (a) Amino acids are directly recognised by m-RNA (b) The third base of the codon is less specific (c) Only one codon codes for an amino acid (d) Every \(t\)-RNA molecule has more than one amino acid attachment

Conversion of starch into maltose takes place by the enzyme: |BHU 1999] (a) invertase (b) maltase (c) diastase (d) zymase

Which one of the following is a conjugated protein? (a) Phosphoprotein (b) Glycoprotein (c) Chromoprotein (d) All of these