Multiple Choice QuestionsThe correct sequence of different phases of cell cycle is
S - G1 - G2 - M
G1 - S - G2 - M
G2 - S - G1 - M
G1 - G2 - S - M
Animals are classified into hierarchical groups in which one of the following, the largest number of species is found?
Genus
Order
Family
Cohort
The blood vessel which supply oxygenated blood to cardiac tissue is
coronary artery
coronary vein
coronary sinus
pulmonary vein
A.
coronary artery
Coronary arteries are the blood vessels that supply the heart muscle (cardiac tissue) with blood rich in oxygen.
Coronary sinus is a collection of veins joined together to form a large vessel that collects blood from the heart muscle. It carries less oxygenated blood to the right atrium as do the superior and inferior vena cavae.
Pulmonary veins are the veins that transfer oxygenated blood from the lungs to the heart. The largest pulmonary veins are the four main pulmonary veins, two from each lung that drain into the left atrium of the heart.
Vegus nerve is a
mixed X cranial nerve
mixed XI cranial nerve
mixed X thoracic nerve
sensory X cranial nerve
Third and fourth ventricles of the brain are connected by
aqueduct of Sylvious
foramen of Monro
foramen of Magnum
corpus callosum
All or none law is not applicable for
whole skeletal muscle
single skeletal muscle fibre
whole cardiac muscle
single smooth muscle fibre
Numerical aperture of microscope lens is expressed by
angular aperture only
refractive index only
both angular aperture and refrative index
wave length of the light used
Which one of the following is not true for enzymes?
They act on a specific substrate
They are made up of fat and sugar
They act at a specific temperature
They act at a specific pH
Living. cells placed in isotonic solution (0.9% saline) retain their size and shape. This is based on the concept of
osmosis
diffusion
facilitated diffusion
transpiration
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