(a) Ascending limb of Henle’s loop is impermeable to water, whereas the descending limb is permeable to it.
(b) Reabsorption of water from distal parts of the tubules is facilitated by the hormone vasopressin.
(c) Dialysis fluid contains all the constituents as in plasma, except the nitrogenous wastes.
(d) A healthy adult human excretes (on an average) 25-30 gm of urea/day.
Describe the role of liver, lungs and skin in excretion.
What is meant by the term osmoregulation?
Which of the following is not correct?
(a) Robert Brown discovered the cell.
(b) Schleiden and Schwann formulated the cell theory.
(c) Virchow explained that cells are formed from pre-existing cells.
(d) A unicellular organism carries out its life activities within a single cell.
Match the following (a) Cristae (i) Flat membranous sacs in stroma (b) Cisternae (ii) Infoldings in mitochondria (c) Thylakoids (iii) Disc-shaped sacs in Golgi apparatus
Both lysosomes and vacuoles are endomembrane structures, yet they differ in terms of their functions. Comment.
What is meant by double circulation? What is its significance?
Bile juice contains no digestive enzymes, yet it is important for digestion. Why?
Thanks.
Thanks for the answer
Most gorgeous ever
Most helpful site ever.Thanks a lot to SARAL STUDY
thanks