Which of the following statements are correct regarding `Na^+ - K^+` pump ?
(i)Needs energy (ATP) to work
(ii)Expels 3 `Na^+` for every `2K^+` ions imported
(iii)Works against a concentration gradient
(iv)Maintains resting potential

Which of the following are not state functions of state variables? (i) Internal energy (ii) Heat (iii) Work (iv) Volume

Na^+ – K^+ pump (A) Transports 3Na^+ inwards & 2K^+ outwards. (B) Maintain ionic gradients by active transport. (C) Works against a concentration gradient. How many of above statements are false ?

Which of the following have same units: (i) Work, (ii) Heat, (iii) Energy (iv) Entropy

Which of the following species is/are isoelectronic with Neon ? (i) N^(3-) (ii) Mg^(2+) (iii) K^+ (iv) Ca^(2+)

Which of the following metals continue to burn in the atmosphere of CO_(2) ? (i) Na (ii) K (iii) Mg (iv) Ca

Which of the following statements are correct? (i). Reabsorption of water occurs passively in the initial segment of nephron. (ii). Nitrogenous wastes are absorbed by passive transport. (iii). Conditional reabsorption of Na^(+) and water takes palce in DCT. (iv). DCT reabsorbs HCO_(3)^(-) (v). DCT is capable of selective secretion of H^(+),K^(+) and NH_(3) to maintain pH and Na^(+)-K^(+) balance in blood. (vi). Substance like glucose, amino acids, Na^(+) , etc,. it the filtrate are reabsorbed actively.

Which of the following statements are correct? (i). Reabsorption of water occurs passively in the initial segment of nephron. (ii). Nitrogenous wastes are absorbed by passive transport. (iii). Conditional reabsorption of Na^(+) and water takes palce in DCT. (iv). DCT reabsorbs HCO_(3)^(-) (v). DCT is capable of selective secretion of H^(+),K^(+) and NH_(3) to maintain pH and Na^(+)-K^(+) balance in blood. (vi). Substance like glucose, amino acids, Na^(+) , etc,. it the filtrate are reabsorbed actively.

Which of the following statement is correct. (A) The electrical potential difference across the polarised plasma membrane is called as action potential in resting stage. (B) Na^+ ion is responsible for generating an action potential. (C) The impulse is action potential