Organ rejection is caused by_____.

1. 1. T-lymphocytes
   2. B-Lymphocytes
   3. Both B and T lymphocytes
   4. RBCs

Keto group is represented as_____.

1. 1. C-COO-C
   2. HCOH
   3. CO
   4. HOH

Enzyme activity can also be charted through the _____.

1. 1. Rate of reaction
   2. Rate of digestion
   3. Level of pH
   4. Number of active sites

Which of the following is used in brewing industry to promote malting_____.

1. 1. Cytokinins
   2. Auxins
   3. Gibberellins
   4. Abscisic Acid

Resolution power of a compound microscope is_____.

1. 1. 0.25 μm
   2. 0.3 μm
   3. 0.4 μm
   4. 0.5 μm

Conversion of ammonia or ammonium ion into nitrites during nitrogen cycle occurs due_____.

1. 1. Rhizobium
   2. Nitrobacter
   3. Pseudomonas
   4. Nitrosomonas

The name Bacteriophage was coined by_____.

1. 1. D Herelle
   2. Charles Chamberland
   3. Ivanowski
   4. Twort

All of the following are involved in nitrification except _____.

1. 1. Rhizohium
   2. Nitrobacter
   3. Nitrosomonas
   4. None of these

Final acceptor of electrons in respiratory chain is_____.

1. 1. NADH
   2. Oxygen
   3. Cytochrome a3
   4. Water

In cell fractionation various components of cells including its organelles can be isolated in different layers depending upon_____.

1. 1. Their physical properties like size & weight
   2. Physical properties of the medium like its density
   3. Both a and b
   4. Their electrical properties like their charges