Description : An example of competitive inhibition of an enzyme is the inhibition of a. Succinic dehydrogenase by malonic acid b. Cytochrome oxidase by cyanide c. Hexokinase by glucose-6-phosphate d. Carbonic anhydrase by carbon dioxide
Last Answer : Ans: A
Description : With regard to the transport of carbon dioxide in blood: a. 25% of carbon dioxide is dissolved in blood b. carbonic anhydrase is found in plasma c. 50% of carbon dioxide is carried as bicarbonate d. deoxygenated haemoglobin facilitates the transport of carbon dioxide
Last Answer : deoxygenated haemoglobin facilitates the transport of carbon dioxide
Description : The enzyme that catalyses carbon dioxide fixation in C4 plants is (a) RuBP carboxylase (b) PEP carboxylase (c) carbonic anhydrase (d) carboxydismutase.
Last Answer : (b) PEP carboxylase
Description : Carbon dioxide is transported from tissues to respiratory surface by only (a) plasma and erythrocytes (b) plasma (c) erythrocytes (d) erythrocytes and leucocytes
Last Answer : (a) plasma and erythrocytes
Description : The carbon dioxide is transported via blood to lungs mostly (a) in combination with haemoglobin only (b) dissolved in blood plasma (c) in the form of bicarbonate ions (d) as carbamino-haemoglobin and as carbonic acid.
Last Answer : (c) in the form of bicarbonate ions
Description : Which of the following statement `//` s is `//` are correct ? A- A high concentration of carbonic anhydrase is present in RBC. B- Minute quantities of
Last Answer : Which of the following statement `//` s is `//` are correct ? A- A high concentration of carbonic anhydrase is ... and D C. A,B,C and D D. Only A
Description : Zn is present as prosthetic group in this enzyme: (A) Carbonic anhydrase (B) Carboxy peptidase (C) Lactate dehydrogenase (D) All of these
Last Answer : Answer : D
Description : Metabolic alkalosis can occur in (A) Severe diarrhoea (B) Renal failure (C) Recurrent vomiting (D) Excessive use of carbonic anhydrase inhibitors
Last Answer : Answer : C
Description : Thiazide diuretics inhibit (A) Carbonic anhydrase (B) Aldosterone secretion (C) ADH secretion (D) Sodium reabsorption in distal tubules
Description : Zinc is a constituent of the enzyme: (A) Succinate dehydrogenase (B) Carbonic anhydrase (C) Mitochondrial superoxide dismutase (D) Aldolase
Last Answer : Answer : B
Description : Identify one of the canbonic anhydrase inhibitor that inhibit only luminal carbonic anhydrase enzyme. (A) Methazolamide (B) Acetazolamide (C) Dichlorphenamide(D) Benzolamide
Description : Carbonic anhydrase enzyme has maximum turn over number (36 million). Minimum turn over number for an enzyme: (A) DNA polymerase (B) Lysozyme (C) Penicillase (D) Lactase dehydrogenase
Description : All of the following are iron-containing enzymes except (A) Carbonic anhydrase (B) Catalase (C) Peroxidase (D) Cytochrome oxidase
Last Answer : Answer : A
Description : All of the following are zinc-containing enzymes except (A) Acid Phosphatase (B) Alkaline Phosphatase (C) Carbonic anhydrase (D) RNA polymerase
Description : Carbonic anhydrase is competitively inhibited by (A) Allopurinol (B) Acetazolamide (C) Aminopterin (D) Neostigmine
Description : Physostigmine is a competitive inhibitor of (A) Xanthine oxidase (B) Cholinesterase (C) Carbonic anhydrase (D) Monoamine oxidase
Description : All the following diuretics inhibit the carbonic anhydrase except (A) Acetazolamide (B) Bumetanide (C) Furosemide (D) Ethacrynic acid
Description : Carbonic anhydrase is an example of (A) Lipoprotein (B) Phosphoprotein (C) Metalloprotein (D) Chromoprotein
Description : Inhibition of carbonic anhydrase results in (a) Abolition of NaHCO3 reabsorption in proximal tubule (b) Enhanced of NaHCO3 reabsorption in proximal tubule (c) Enhanced NAHCO3 secretion in distal tubule (d) None of the above
Description : Urine volume is increased with: a. carbonic anhydrase inhibitors b. hyperglycaemia c. increased aldosterone secretion d. damage to the posterior pituitary
Last Answer : damage to the posterior pituitary
Description : Carbonic anhydrase occurs in (a) lymphocytes (b) blood plasma (c) RBCs (d) leucocytes.
Last Answer : (c) RBCs
Description : In which one of the following enzymes, is copper necessarily associated as an activator? (a) Carbonic anhydrase (b) Tryptophanase (c) Lactic dehydrogenase (d) Tyrosinase
Last Answer : (d) Tyrosinase
Description : Select the diuretic which is orally active, efficacious in acidosis as well as alkalosis, causes diuresis even in renal failure and has additional carbonic anhydrase inhibitory action: A. Mannitol B. Benzthiazide C. Indapamide D. Furosemide
Last Answer : D. Furosemide
Description : Select the correct statement abut donepezil: A. It is a topical carbonic anhydrase inhibitor used in glaucoma B. It is a catechol-'O'-methyl transferase inhibitor used as adjuvant in ... affords symptomatic improvement in Alzheimer's disease D. It is a synthetic cannabinoid with antiemetic property
Last Answer : C. It is a cerebroselective anticholinesterase that affords symptomatic improvement in Alzheimer's diseas
Description : The following is true of topiramate except: A. It is a broad spectrum antiepileptic drug B. It inhibits the enzyme carbonic anhydrase C. It is used as add-on therapy in refractory partial seizures D. It is not effective in generalized tonic-clonic seizures
Last Answer : D. It is not effective in generalized tonic-clonic seizures
Description : Aldosterone enhances Na+ reabsorption in renal tubules by: A. Stimulating carbonic anhydrase B. Activating Na+ K+ ATPase C. Inducing the synthesis of Na+ K+ ATPase D. Inducing renal prostaglandin synthesis
Last Answer : C. Inducing the synthesis of Na+ K+ ATPase
Description : Dorzolamide is a: A. Topically applied ocular carbonic anhydrase inhibitor B. Second generation sulfonylurea hypoglycaemic C. Topical sulfonamide antibacterial D. Luminal amoebicide
Last Answer : A. Topically applied ocular carbonic anhydrase inhibitor
Description : Why normal rain is slightly acidic? A. due to presence of dust in air B. carbon dioxide and water in clouds react to form carbonic acid (Answer) C. Ozone depletion D. All of these
Last Answer : B. carbon dioxide and water in clouds react to form carbonic acid (Answer)
Description : Minute, circular discs floating in the blood, which carry oxygen to the tissues, and carbon dioxide away from them, are called (a) White blood corpuscles (WBC) (b) Red blood corpuscles (RBC) (c) Monophylls (d) Erythrocytes
Last Answer : Ans:(b)
Description : The acid which fails to liberate carbon dioxide from sodium bicarbonate is : (1) Acetic acid (2) Formic acid (3) Carbonic acid (4) Sulphuric acid
Last Answer : (4) Sulphuric acid Explanation: Sodium bicarbonate and organic acid (Formic acid, Acetic acid, Carbonic acid, etc) react vigorously to liberate carbon dioxide. For example, Sodium bicarbonate (NaHCO3) when treated with acetic acid reacts vigorously to liberate carbon dioxide.
Last Answer : Sulphuric acid
Description : Assertion `:-` Fats are transported into the lacteals in the villi. Reason `:-` Fatty acids are insoluble in water.
Last Answer : Assertion `:-` Fats are transported into the lacteals in the villi. Reason `:-` Fatty acids are ... False. D. If both Assertion & Reason are false.
Description : Assertion` :-` Major part of `CO_(2)` is transported in the form of sodium bicarbonate. Reason `:-` 0.3 ml of `CO_(2)` is transported per 100ml of blo
Last Answer : Assertion` :-` Major part of `CO_(2)` is transported in the form of sodium bicarbonate. Reason `: ... False. D. If both Assertion & Reason are false.
Description : How is oxygen and carbon dioxide transported in human beings ? -Biology
Last Answer : (i) Transport of oxygen : Haemoglobin present in the blood takes up the oxygen from the air in the lungs. It carries the oxygen to tissues which are deficient in oxygen before releasing it. (ii) ... the dissolved form in our blood plasma to lungs. Here it diffuses from blood to air in the lungs.
Description : Approximately seventy percent of carbon dioxide absorbed by the blood will be transported to the lungs
Last Answer : Approximately seventy percent of carbon dioxide absorbed by the blood will be transported to the lungs A. ... to R.B.C. D. as carbamino-haemoglobin
Description : The majority of carbon dioxide produced by our body cells is transported to the lungs -
Last Answer : The majority of carbon dioxide produced by our body cells is transported to the lungs - A. ... bicarbonates C. As carbonates D. Attached to hemoglobin
Description : Is carbon dioxide transported in the blood by plasma hemoglobin and bicarbonate ions?
Last Answer : Need answer
Description : How is carbon dioxide released by cellular respiration transported from the tissues to be eliminated through the lungs?
Last Answer : In vertebrates almost 70% of the carbon dioxide is transported by the blood in the form of bicarbonate, 25% bound to hemoglobin and 5% dissolved in the plasma.
Description : The majority of carbon dioxide produced by our body cells is transported to the lungs as (a) attached to haemoglobin (b) dissolved in the blood (c) as bicarbonates (d) as carbonates.
Last Answer : (c) as bicarbonates
Description : Approximately seventy percent of carbon dioxide absorbed by the blood will be transported to the lungs (a) as bicarbonate ions (b) in the form of dissolved gas molecules (c) by binding to RBC (d) as carbamino - haemoglobin.
Last Answer : (a) as bicarbonate ions
Description : Carbon and oxygen combine to form two oxides, carbon monoxide and carbon dioxide in which the ratio of the weights of carbon and oxygen is respectivel
Last Answer : Carbon and oxygen combine to form two oxides, carbon monoxide and carbon dioxide in which the ... conservation of mass D. Law of constant proportions
Description : What happens when you combine carbon dioxide and oxygen?
Last Answer : What is the answer ?
Description : During pudding (A) Molten metal is kept clear of the fuel (B) Carbon is converted into carbonic acid gas (C) Silicon forms a slag (D) All the above
Last Answer : Answer: Option D
Description : Carbonic acid is extremely active in the chemical weathering of: w) feldspar x) quartz y) carbon z) quartzite
Last Answer : ANSWER: W -- FELDSPAR
Description : Which of the following forms of haemoglobin is not present in erythrocytes ?
Last Answer : Which of the following forms of haemoglobin is not present in erythrocytes ? A. ... C. Carbon monooxyhaemoglobin D. Carbon dioxy haemoglobin
Description : Glycophorin is present in cell membranes of (A) Erythrocytes (B) Platelets (C) Neutrophils (D) Liver
Description : HMP shunt is present in (A) Erythrocytes (B) Liver (C) Testes (D) All of these
Description : Name the acid present in lemon. (1) Phosphoric acid (2) Carbonic acid (3) Citric acid (4) Malic acid
Last Answer : (3) Citric acid Explanation: Lemons have significant concentrations of citric acid (about 47 g/l in juice). Citric acid occurs naturally in citrus fruits.
Description : Assertion: Amount of biodegradable organic matter present in water is measured by BOD of water Reason: During biodegradation of organic compounds. Oxy
Last Answer : Assertion: Amount of biodegradable organic matter present in water is measured by BOD of water Reason: ... but reason is wrong D. both are wrong