Sucrose on hydrolysis gives:

1. $\mathrm{\alpha }$-D-Glucose + $\mathrm{\beta }$-D-Glucose

2. $\mathrm{\alpha }$-D-Glucose + $\mathrm{\beta }$-D-Fructose

3. $\mathrm{\alpha }$-D-Fructose + $\mathrm{\beta }$-D-Fructose

4. $\mathrm{\beta }$-D-Glucose + $\mathrm{\alpha }$-D-Fructose

Which of the following metal ions activates many enzymes participating in the oxidation of glucose to produce ATP and with Na it is also responsible for the transmission of nerve signals:

1. Copper

2. Calcium

3. Potassium

4. Iron

Which of the following is a basic amino acid?

A well known naturally occuring organometallic compound is

1. vit B₁₂ coenzyme

2. chlorophyll

3. cytochrome P-450

4. myoglobin

${\mathrm{VO}}_4^{3-}<mspace\; width="1em"></mspace>\mathrm{or}<mspace\; width="1em"></mspace>{\mathrm{PO}}_4^{3-}$ which inhibits the operation of enzyme ATPase?

1. Both

2. Only ${\mathrm{PO}}_4^{3-}$

3. Only ${\mathrm{VO}}_4^{3-}$

4. None of these

The inside of a cell is a

1. reducing medium

2. oxidising medium

3. neutral medium

4. None of these

O₂ binding in Hb is

1. pH dependent

2. pH independent

3. O₂ binds at neutral pH

4. None of these

Release of O₂ from oxyhaemoglobin is favoured by

1. high pH and low CO₂ conc

2. low pH and low CO₂ conc

3. high pH and high CO₂ conc

4. low pH and high conc. of CO₂ 

Nitrogenase enzyme contains

1. Fe-S protein

2. Mo-Fe-S protein

3. Both 1 and 2

4. None of the above

The biological role of Cytochrome P-450 is

1. Nitrogen fixation

2. Oxidation of RH to ROH

3. Amide hydrolysis

4. Oxidation of amino acid.