STD 12 - 7. human health and disease — NEET STD 11 Science — Question

Chromosomal abnormality of an unborn baby (while in mother's womb) can be found out by a technique called

Mutagens are

Human uterus is

Cirrhosis of liver is caused by the chronic intake of

A comparison of the volume of the filtrate formed per day 180 litre per day with that of the urine released (1.5 litres), suggest that nearly 99 per cent of the filtrate has to be reabsorbed by the renal tubules. Which statement true for reabsorption ?
(i) Nearly all of the essential nutrients, 70-80 per cent of electrolytes and water are reabsorbed by this segment.
(ii) Reabsorption in loop of Henle is maximum.
(iii) Loop of Henle plays a significant role in the maintenance of high osmolarity of medullary interstitial fluid.
(iv) The descending limb of loop of Henle is permeable to water but almost impermeable to electrolytes.
(v) The ascending limb is impermeable to water but allows transport of electrolytes actively or passively.
(vi) Conditional reabsorption of Na and water takes place in PCT.
(vii) Large amounts of salt could be reabsorbed from collecting duct to produce a concentrated urine.

Which structure is not concerned with breathing in frog

Between persons of which two blood groups is the blood transfusion not possible