Class 11 Biology - Chapter Excretory products and their Elimination NCERT Solutions | Define Glomerular Filtration Rate (GFR)
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Question 1
Define Glomerular Filtration Rate (GFR)
Answer
Glomerular filtration rate is the amount of glomerular filtrate formed in all the nephrons of both the kidneys per minute. In a healthy individual, it is about 125 mL/minute. Glomerular filtrate contains glucose, amino acids, sodium, potassium, urea, uric acid, ketone bodies, and large amounts of water.
More Questions From Class 11 Biology - Chapter Excretory products and their Elimination
- Q:-
Describe the role of liver, lungs and skin in excretion.
- Q:- Explain the autoregulatory mechanism of GFR.
- Q:- Give a brief account of the counter current mechanism.
- Q:- Name the following:
(a) A chordate animal having flame cells as excretory structures
(b) Cortical portions projecting between the medullary pyramids in the human kidney
(c) A loop of capillary running parallel to the Henles loop. - Q:- What is the significance of juxtaglomerular apparatus (JGA) in kidney function?
- Q:- Terrestrial animals are generally either ureotelic or uricotelic, not ammonotelic, why?
- Q:- Fill in the gaps:
(a) Ascending limb of Henles loop is ____________to water whereas the descending limb is___________to it.
(b) Reabsorption of water from distal parts of the tubules is facilitated by hormone____________.
(c) Dialysis fluid contains all the constituents as in plasma except ________.
(d) A healthy adult human excretes (on an average) _______ gm of urea/day. - Q:-
What is meant by the term osmoregulation?
- Q:- Match the items of column I with those of column II:
Column I Column II
(a) Ammonotelism (i) Birds
(b) Bowmans capsule (ii) Water reabsorption
(c) Micturition (iii) Bony fish
(d) Uricotelism (iv) Urinary bladder
(e) ADH (v) Renal tubule - Q:- Explain micturition.
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- Q:-
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. - Q:- What are macromolecules? Give examples.
- Q:- What is the average cell cycle span for a mammalian cell?
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1 Comment(s) on this Question
Arora
2018-08-20 19:54:10
It is very iseful
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