1631. Vacuum tubes has been replaced by :

A. Conductors
B. Diodes
C. Transistors *
D. None of these

1632. Dacron is :

A. Polyethylene *
B. Epoxy
C. Polyamide
D. None of these

1633. It is a secondary plant nutrient :

A. Nitrogen
B. Phosphorus
C. Sulphur *
D. None of these

1634. An area of microbiology that is concerned with the occurrence of disease in human population is :

A. Immunology
B. Parasitology
C. Epidemiology *
D. None of these

1635. The number of electrons of a neutral atom is automatically known if one knows the :

A. Atomic number *
B. Atomic weight
C. Number of orbitals
D. None of these

1636. Which of the following is not an enzyme ?

A. Chymotrypsin
B. Secretin *
C. Pepsin
D. None of these

1637. It is impossible for a type of O+ baby to have a type of __________ mother :

A. AB- *
B. O-
C. O+
D. None of these

1638. Serum if blood plasma minus its :

A. Calcium ions
B. Clotting proteins *
C. Globulins
D. None of these

1639. All of these are innervated by the autonomic nervous system, except for:

A. Cardiac Muscles
B. Skeletal Muscles *
C. Smooth Muscles
D. None of these

1640. The damage to the _________ nerve could result in the defect of the eye movement :

A. Optic
B. Trigeminal
C. Aducens
D. None of these (Cranial nerve ) *