292 Q) "Before X-ray examination (coloured X-ray) of the stomach, patients are given suitable salt of barium because "
(a) barium salts are white in colour and this helps stomach to appear clearly
(b) barium is a good absorber of X-rays and helps stomach to appear clearly
(c) barium salts are easily available
(d) barium allows X-rays to pass through the stomach
294 Q) The bacteria were discovered by which of the following person
(a) H Urey
(b) EH Haeckel
(cj AV Leeuwenhoek
295 Q) Which of the following vitamins is required for the maturation of erythrocytes in human beings?
(a) Vitamin A
(b) Vitamin B,2
(c) Vitamin D
(d) Vitamin B5
296 Q) Which one among the following cycles involves the conversion of muscle lactic acid to muscle glycogen?
(a) Kreb's cycle
(b) Cori cycle
(c) Ornithine cycle
(d) EMP cycle
297 Q) Which one among the following chemicals/hormones can be used to overcome the genetic dwarfness?
298 Q) Which one among the following is the function of osphradium found in Pila globosa?
299 Q) "Select the correct answer using the codes given below
I. Heparin II. Natural gums III. Agar-agar
Which of the products given above is/are carbohydrates in nature?"
(a) Only I
(b) Only III
(c) I and II
(d) I, II and III
300 Q) The eukaryotic organisms contain ribosomes having 40 S and 60S subunits. The assembly of such units give
(a) 60 S unit
(b) 70 S unit
(c) 80 S unit
(d) 100 S unit
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