For the activity of amylase which of the following is required as co-factor? (A) HCO3 (B) Na+ (C) K+ (D) Cl

For the activity of amylase which of the following is required as co-factor? (A) HCO3 (B) Na+ (C) K+ (D) Cl
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Which ion moves freely through the plasma membrane a. Na b. Cl c. k d. HCo3

Description : Which ion moves freely through the plasma membrane a. Na b. Cl c. k d. HCo3

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Which ion is actively transported to the outside of cell membrane a. K b. Cl c. Na d. HCo3

Description : Which ion is actively transported to the outside of cell membrane a. K b. Cl c. Na d. HCo3

Last Answer : Na

The plasma membrane in resting condition is almost impermeable to a. K+ b. Na+ c. Cl d. HCo3

Description : The plasma membrane in resting condition is almost impermeable to a. K+ b. Na+ c. Cl d. HCo3

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Which ion is found in greater concentration inside the cell a. K b. Na c. Cl d. HCO3

Description : Which ion is found in greater concentration inside the cell a. K b. Na c. Cl d. HCO3

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Which ion is found in greater concentration outside the cell a. K b. Na c. Cl d. HCO3

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Cyclic nucleotides exert the following action on salt transport across intestinal mucosal cells: A. Both cyclic AMP and cyclic GMP enhance Cland HCO3 – secretion B. Cyclic AMP enhances but cyclic GMP inhibits Cl– and HCO3 – secretion C. Cyclic AMP inhibits but cyclic GMP enhances Na+ and Cl– reabsorption D. Both cyclic AMP and cyclic GMP enhance Na+ and Cl– reabsorption

Description : Cyclic nucleotides exert the following action on salt transport across intestinal mucosal cells: A. Both cyclic AMP and cyclic GMP enhance Cland HCO3 - secretion B. Cyclic AMP enhances but cyclic GMP ... Cl- reabsorption D. Both cyclic AMP and cyclic GMP enhance Na+ and Cl- reabsorption

Last Answer : A. Both cyclic AMP and cyclic GMP enhance Cland HCO3 – secreti

The predominant action of plasma is (A) HCO3– (B) Cl– (C) HPO4– – (D) SO4 – –

Description : The predominant action of plasma is (A) HCO3– (B) Cl– (C) HPO4– – (D) SO4 – –

Last Answer : Answer : B

In the genetic disorder of cystinuria, the patient excretes large quantities of cystine in their urine and its low solubility causes crystalline cystine to precipitate as stones in kidneys. The remedy involves ingesting Na HCO3. Reaction of this treatment is (A) NaHCO2 combines with cystine (B) NaHCO3 raises the pH above the isoelectric point of cystine (C) NaHCO3 prevents stone formation by hydrolysis of cystine to cysteine (D) None of these

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Last Answer : Answer : C

Na+/K+-ATPase along with ATP requires (A) Ca (B) Mn (C) Mg (D) Cl

Description : Na+/K+-ATPase along with ATP requires (A) Ca (B) Mn (C) Mg (D) Cl

Last Answer : Answer : C

Binding of gamma-aminobutyric acid to its receptors in brain increases the permeability of cell membrane to (A) Cl– (B) Na+ (C) K+ (D) Ca++

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Last Answer : Answer : A

Carboxyhemoglobin is formed by (A) CO (B) CO2 (C) HCO3 (D) HCN

Description : Carboxyhemoglobin is formed by (A) CO (B) CO2 (C) HCO3 (D) HCN

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The increasing order of reactivity among group 1 elements is Li<Na<K<Rb<Cs whereas among the group 17 elements, it is F>Cl>Br>I. Explain.

Description : The increasing order of reactivity among group 1 elements is Li

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Amiloride inhibits K+ excretion in the distal tubules and collecting ducts by blocking: A. Electrogenic K+ channels B. Electrogenic Na+ channels C. Nonelectrogenic Na+-Cl– symport D. H+K+ATPase

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Last Answer : B. Electrogenic Na+ channels

Furosemide acts by inhibiting the following in the renal tubular cell: A. Na+-K+-2Cl– cotransporter B. Na+-Cl– symporter C. Na+-H+ antiporter D. Na+ K+ ATPase

Description : Furosemide acts by inhibiting the following in the renal tubular cell: A. Na+-K+-2Cl– cotransporter B. Na+-Cl– symporter C. Na+-H+ antiporter D. Na+ K+ ATPase

Last Answer : A. Na+-K+-2Cl– cotransporter

What is the name and chemical formula of the main product formed by heating baking soda. (a) sodium carbonate,Na 2 CO 3 (b) Bleaching powder ,CaOCl 2 (c) sodium chloride,Na Cl (d)Plaster of paris ,CaSO 4 .I/2H 2 O

Description : What is the name and chemical formula of the main product formed by heating baking soda. (a) sodium carbonate,Na 2 CO 3 (b) Bleaching powder ,CaOCl 2 (c) sodium chloride,Na Cl (d)Plaster of paris ,CaSO 4 .I/2H 2 O

Last Answer : (a) sodium carbonate,Na 2 CO 3

Pyruvate kinase requires ______ ions for maximum activity. (A) Na+ (B) K+ (C) Ca2+ (D) Mg2+

Description : Pyruvate kinase requires ______ ions for maximum activity. (A) Na+ (B) K+ (C) Ca2+ (D) Mg2+

Last Answer : B

Oedema can occur when (A) Plasma Na and Cl are decreased (B) Plasma Na and Cl are increased (C) Plasma proteins are decreased (D) Plasma proteins are increased

Description : Oedema can occur when (A) Plasma Na and Cl are decreased (B) Plasma Na and Cl are increased (C) Plasma proteins are decreased (D) Plasma proteins are increased

Last Answer : Answer : C

The pancreatic amylase activity is increased in the presence of (A) Hydrochloric acid (B) Bile salts (C) Thiocyanate ions (D) Calcium ions

Description : The pancreatic amylase activity is increased in the presence of (A) Hydrochloric acid (B) Bile salts (C) Thiocyanate ions (D) Calcium ions

Last Answer : Answer : B

The ion which activates salivary amylase activity is (A) Chloride (B) Bicarbonate (C) Sodium (D) Potassium

Description : The ion which activates salivary amylase activity is (A) Chloride (B) Bicarbonate (C) Sodium (D) Potassium

Last Answer : Answer : A

Catalytic activity of salivary amylase requires the presence of (A) Chloride ions (B) Bromide ions (C) Iodide ions (D) All of these

Description : Catalytic activity of salivary amylase requires the presence of (A) Chloride ions (B) Bromide ions (C) Iodide ions (D) All of these

Last Answer : A

Which one of the following statements is true regarding digestion and absorption of food in humans? (a) Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na+. (b) Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries. (c) About 60% of starch is hydrolysed by salivary amylase in our mouth. (d) Oxyntic cells in our stomach secrete the proenzyme pepsinogen.

Description : Which one of the following statements is true regarding digestion and absorption of food in humans? (a) Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions ... amylase in our mouth. (d) Oxyntic cells in our stomach secrete the proenzyme pepsinogen.

Last Answer : (a) Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na

The deficiencies of micronutrients, not only affect growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below, which group of three elements shall affect most, both photosynthetic and mitochondrial electron transport?(a) Co, Ni, Mo (b) Ca, K, Na (c) Mn, Co, Ca (d) Cu, Mn, Fe

Description : The deficiencies of micronutrients, not only affect growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below, which group of three elements shall affect most, both ... , Mo (b) Ca, K, Na (c) Mn, Co, Ca (d) Cu, Mn, Fe

Last Answer : d) Cu, Mn, Fe

Determine the equivalent weight of the following ions : `(a) Na^(+) " " (b) Al^(3+) " " (c) NO^(+) " " Cl^(-)` `(e) CO_(3)^(2-) " " SO_(4)^(2-) " " (g

Description : Determine the equivalent weight of the following ions : `(a) Na^(+) " " (b) Al^(3+) " " (c) NO^(+) " " Cl^(-)` `(e) CO_(3)^(2-) " " SO_(4)^(2-) " " (g

Last Answer : Determine the equivalent weight of the following ions : `(a) Na^(+) " " (b) Al^(3+) " " (c) NO^(+) " " Cl^(- ... " " SO_(4)^(2-) " " (g) PO_(4)^(3-)`

Among the following, the number of elements showing only one non-zero oxidation state is: O,Cl,F,N,P,Sn,Tl,Na,Ti

Description : Among the following, the number of elements showing only one non-zero oxidation state is: O,Cl,F,N,P,Sn,Tl,Na,Ti

Last Answer : Among the following, the number of elements showing only one non-zero oxidation state is: O,Cl,F,N,P,Sn,Tl,Na,Ti

What is the coordination number of an ion what is the coordination number of the cation (a) Na Cl structure and (b) Cs Cl structure explain the reason for this difference?

Description : What is the coordination number of an ion what is the coordination number of the cation (a) Na Cl structure and (b) Cs Cl structure explain the reason for this difference?

Last Answer : The coordination number is six for Na in NaCl.The coordination number is eight for Cs in CsCl. The accepted explanation is that the ionic radii of cesium and chloride are very similar.

Which of the following is a correct pair according to increasing atomic number from left to right? (1) Ca, Cl (2) Be, B (3) Na, Ne (4) He, H

Description : Which of the following is a correct pair according to increasing atomic number from left to right? (1) Ca, Cl (2) Be, B (3) Na, Ne (4) He, H

Last Answer : (2) Be, B Explanation: The correct pair is Be and B. Beryllium (Be) has atomic number of 4, while the atomic number of Boron (2) is 5.

Arrange the following order of the property indicated: (a). F, Cl, Br and I (negative electron gain enthalpy) (b). Mg, Al, Si and Na (ionization enthalpy) (c). C, N, O and F (second ionization enthalpy)

Description : Arrange the following order of the property indicated: (a). F, Cl, Br and I (negative electron gain enthalpy) (b). Mg, Al, Si and Na (ionization enthalpy) (c). C, N, O and F (second ionization enthalpy)

Last Answer : Ans. (a). I

Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury electrolytic cell. Which of the following is the anodic reaction? (A) Oxidation of Na + ions (B) Oxidation of Cl - ions (C) Reduction of Na + ions (D) Reduction of Cl - ions

Description : Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury electrolytic cell. Which of the following is the anodic reaction? (A) Oxidation of Na + ions (B) Oxidation of Cl - ions (C) Reduction of Na + ions (D) Reduction of Cl - ions

Last Answer : (B) Oxidation of Cl - ions

The Na+-Cl– symport in the early distal convoluted tubule of the kidney is inhibited by: A. Thiazides B. Metolazone C. Xipamide D. All of the above

Description : The Na+-Cl– symport in the early distal convoluted tubule of the kidney is inhibited by: A. Thiazides B. Metolazone C. Xipamide D. All of the above

Last Answer : D. All of the above

An aqueous solution of sodium chloride is prepared by dissolving 10kg of sodium chloride in 50 kg of water find (i) Weight % (ii) Mole % of solution. [Atomic weight of Na = 23, Cl = 35.5]

Description : An aqueous solution of sodium chloride is prepared by dissolving 10kg of sodium chloride in 50 kg of water find (i) Weight % (ii) Mole % of solution. [Atomic weight of Na = 23, Cl = 35.5] 

Last Answer : Weight of NaCl = 10 kg Weight of H2O = 50 kg Total weight = 60 kg Weight % of NaCl = (10/ 60) * 100 =16.67% Weight % of H2O = (50/ 60) * 100 = 83.33% Molecular weight of NaCl = 58.5 k moles of NaCl ... 100 = 5.79% Mol % of H2O = (moles of H2O / Total moles)*100  = (2.78/ 2.949)*100 = 94.26%

Which one of the following pairs of atoms would form a non-polar covalent bond? A C and O B N and O C Cl and Cl D Na and Cl E Ne and Ne

Description : Which one of the following pairs of atoms would form a non-polar covalent bond? A C and O B N and O C Cl and Cl D Na and Cl E Ne and Ne

Last Answer : C Cl and Cl

The predominant cation of plasma is (A) Na+ (B) K+ (C) Ca+ (D) Mg++

Description : The predominant cation of plasma is (A) Na+ (B) K+ (C) Ca+ (D) Mg++

Last Answer : Answer : A

What is the principal cation of intracellular fluid? (A) K+ (B) Na+ (C) Ca2+ (D) Mg2+

Description : What is the principal cation of intracellular fluid? (A) K+ (B) Na+ (C) Ca2+ (D) Mg2+

Last Answer : Answer : A

The principal cation of extra cellular fluid: (A) K+ (B) Na+ (C) H+ (D) Ca2+

Description : The principal cation of extra cellular fluid: (A) K+ (B) Na+ (C) H+ (D) Ca2+

Last Answer : Answer : B

Gastric lipae is activated in the presence of (A) Bile salts (B) Cu++ (C) K+ (D) Na+

Description : Gastric lipae is activated in the presence of (A) Bile salts (B) Cu++ (C) K+ (D) Na+

Last Answer : Answer : A

NH+ 4 aminates glutamate to form glutamine requiring ATP and (A) K+ (B) Na+ (C) Ca++ (D) Mg++

Description : NH+ 4 aminates glutamate to form glutamine requiring ATP and (A) K+ (B) Na+ (C) Ca++ (D) Mg++

Last Answer : Answer : D

Binding of acetylcholine to its receptors increases the permeability of cell membrane to (A) Ca++ (B) Na+ (C) K+ (D) Na+ and K+

Description : Binding of acetylcholine to its receptors increases the permeability of cell membrane to (A) Ca++ (B) Na+ (C) K+ (D) Na+ and K+

Last Answer : Answer : D

The enzyme carbamoyl phosphate synthetase requires (A) Mg++ (B) Ca++ (C) Na+ (D) K+

Description : The enzyme carbamoyl phosphate synthetase requires (A) Mg++ (B) Ca++ (C) Na+ (D) K+

Last Answer : Answer : A

Renin converts casein to paracasein in presence of (A) Ca++ (B) Mg++ (C) Na+ (D) K+

Description : Renin converts casein to paracasein in presence of (A) Ca++ (B) Mg++ (C) Na+ (D) K+

Last Answer : Answer : A

Which one of the following statements concerning glucose metabolism is correct? (A) The conversion of Glucose to lactate occurs only in the R.B.C (B) Glucose enters most cells by a mechanism in which Na+ and glucose are co-transported (C) Pyruvate kinase catalyses an irreversible reaction (D) An elevated level of insulin leads to a decreased level of fructose 2, 6-bisphosphate in hepatocyte

Description : Which one of the following statements concerning glucose metabolism is correct? (A) The conversion of Glucose to lactate occurs only in the R.B.C (B) Glucose enters most cells by a mechanism in ... ) An elevated level of insulin leads to a decreased level of fructose 2, 6-bisphosphate in hepatocyte

Last Answer : C

Which of the following terms describes a gastric secretion that combines with vitamin B-12 so that it can be absorbed? a) Intrinsic factor Lack of intrinsic factor is a common finding in the aged patient. b) Amylase Amylase is an enzyme that aids in the digestion of starch. c) Pepsin Pepsin is a gastric enzyme important in protein digestion. d) Trypsin Trypsin is an enzyme that aids in the digestion of protein.

Description : Which of the following terms describes a gastric secretion that combines with vitamin B-12 so that it can be absorbed? a) Intrinsic factor Lack of intrinsic factor is a common finding in the aged ... in protein digestion. d) Trypsin Trypsin is an enzyme that aids in the digestion of protein.

Last Answer : a) Intrinsic factor Lack of intrinsic factor is a common finding in the aged patient.

A water sample, which did not give lather with soap, was found to contain Ca(HCO3)2 and Mg(HCO3)2.

Description : A water sample, which did not give lather with soap, was found to contain Ca(HCO3)2 and Mg(HCO3)2.

Last Answer : A water sample, which did not give lather with soap, was found to contain Ca(HCO3)2 and Mg ... with soap? Explain with the help of chemical reactions.

Upon the entry of carbon dioxide in the red blood cells, H+ionsare formed at a very rapid rate, and yet the blood does not turn acid because (a) H+ ions are rapidly exchanged at the expense of HCO3-ions (b) H+ ions are rapidly removed and excreted in the urine (c) H+ ions are buffered by proteins of haemoglobin and plasma (d) H+ ions are buffered by proteins of haemoglobin and proteins and phosphates of plasma

Description : Upon the entry of carbon dioxide in the red blood cells, H+ionsare formed at a very rapid rate, and yet the blood does not turn acid because (a) H+ ions are rapidly exchanged at the ... haemoglobin and plasma (d) H+ ions are buffered by proteins of haemoglobin and proteins and phosphates of plasma

Last Answer : Ans:(c)

Which one of the following statements in regard to the excretion by the human kidneys is correct? (a) Descending limb of loop of Henle is impermeable to water.(b) Distal convoluted tubule is incapable of reabsorbing HCO3 – . (c) Nearly 99 per cent of the glomerular filtrate is reabsorbed by the renal tubules. (d) Ascending limb of loop of Henle is impermeable to electrolytes.

Description : Which one of the following statements in regard to the excretion by the human kidneys is correct? (a) Descending limb of loop of Henle is impermeable to water. (b) Distal convoluted tubule is ... reabsorbed by the renal tubules. (d) Ascending limb of loop of Henle is impermeable to electrolytes.

Last Answer : (c) Nearly 99 per cent of the glomerular filtrate is reabsorbed by the renal tubules.

Which of the following is not responsible for causing permanent hardness of water? (A) Ca(HCO3 )2 (B) CaCl2 (C) MgCl2(D) None of these

Description : Which of the following is not responsible for causing permanent hardness of water? (A) Ca(HCO3 )2 (B) CaCl2 (C) Mgcl2 (D) None of these

Last Answer : (A) Ca(HCO3 )2

Plasma membrane in resting condition is very permeable to a. K b. Cl c. Both d. None of them

Description : Plasma membrane in resting condition is very permeable to a. K b. Cl c. Both d. None of them

Last Answer : Cl

Name the following coordination compounds according to IUPAC system of nomenclature :(i) [Co(NH3)4 (H2O)Cl]Cl2 (ii) [CrCl2(en)2]Cl, (en = ethane – 1, 2 – diamine) -Chemistry

Description : Name the following coordination compounds according to IUPAC system of nomenclature :(i) [Co(NH3)4 (H2O)Cl]Cl2 (ii) [CrCl2(en)2]Cl, (en = ethane – 1, 2 – diamine) -Chemistry

Last Answer : (i) [CO(NH3)4 (H2O)Cl]Cl2 Tetraammine aquachlorido cobalt (III) chloride (ii) [CrCl2(en)2]Cl Dichlorobis (ethane-1, 2-diamine) chromium (III) chloride

Oxidation state of cobalt in `[Co(NH_(3))_(4)(H_(2)O)Cl]SO_(4)` is

Description : Oxidation state of cobalt in `[Co(NH_(3))_(4)(H_(2)O)Cl]SO_(4)` is

Last Answer : Oxidation state of cobalt in `[Co(NH_(3))_(4)(H_(2)O)Cl]SO_(4)` is

Which kind of isomerism is shown by `Co (NH_(3))_(4) Br_(2) Cl` ?

Description : Which kind of isomerism is shown by `Co (NH_(3))_(4) Br_(2) Cl` ?

Last Answer : Which kind of isomerism is shown by `Co (NH_(3))_(4) Br_(2) Cl` ? A. ... Optical and ionization C. Gometrical and optical D. Geometrical only

Co-ordination compounds `[Pt(NH_(3))_(3)(NCS)]` and `[Pt(NH_(3))_(2) Cl_(2)]Cl` are example of ........ Isomerism

Description : Co-ordination compounds `[Pt(NH_(3))_(3)(NCS)]` and `[Pt(NH_(3))_(2) Cl_(2)]Cl` are example of ........ Isomerism

Last Answer : Co-ordination compounds `[Pt(NH_(3))_(3)(NCS)]` and `[Pt(NH_(3))_(2) Cl_(2) ... isomerism B. linkage isomers C. optical isomerism D. hydrate isomerism