Description : When eggs are cooked (A) Biotin is destroyed but avidin remains unaffected (B) Avidin is inactivated but biotin remains unaffected (C) Both avidin and biotin are inactivated (D) Both avidin and biotin remain unaffected
Last Answer : Answer : B
Last Answer : (B) Avidin is inactivated but biotin remains unaffected
Description : Pancreatic lipase is activated by (a) HCI (b) CCK (c) Bite (d) All
Last Answer : (c) Bite
Description : Positive control of induction is best described as a control system in which an operon functions (A) Unless it is switched off by a derepressed repressor protein (B) Only after a repressor protein is ... on (D) Only after an inducer protein, which is activated by an inducer, switch it on
Last Answer : Answer : D
Description : G-proteins: a. are activated by the binding of an extracellular ligand to a membrane receptor b. can be mutated in tumour cells c. mediate the action of glucocorticoid hormone d. they are inactivated by cholera toxins
Last Answer : are activated by the binding of an extracellular ligand to a membrane receptor
Description : True statements about chromosome include: a. 23 chromosomes are found in germinal cells b. in female only one chromosome is activated c. the Barr body is due to inactivated X chromosome e. all above
Last Answer : all above
Description : If the growing plant is decapitated, then (a) its growth stops (b) leaves become yellow and fall down (c) axillary buds are inactivated (d) axillary buds are activated.
Last Answer : (d) axillary buds are activated.
Description : To prepare soils for the bioassay, her bicides get inactivated by a). Darco G-60 b). Activated charcoal c). a & b d). None
Last Answer : c). a & b
Description : yocardial Na+ channel blockade by lignocaine has the following characteristic: A. It blocks inactivated Na+ channels more than activated channels B. It blocks activated Na+ channels more than inactivated ... Na+ channels D. It produces more prominent blockade of atrial than ventricular Na+ channels
Last Answer : A. It blocks inactivated Na+ channels more than activated channels
Description : A drug which prevents uric acid synthesis by inhibiting the enzyme xanthine oxidase is (A) Aspirin (B) Allopurinol (C) Colchicine (D) Probenecid
Last Answer : (B) Allopurinol
Description : Arginase enzyme is formed by (a) Spleen (b) Liver (c) Kidney (d) All
Last Answer : (b) Liver
Description : What is common among amylase, rennin and trypsin (a) All are protein (b) These are all proteolytic enzyme (c) These are produced in stomach (d) These act at a pH lower than 7
Last Answer : (a) All are protein
Description : The enzyme which is used for the digestion of fat is (a) Water (b) Bile (c) Amylase (d) Lipase
Last Answer : (d) Lipase
Description : Which of the following regions of the alimentary canal of rabbit does not secrete a digestive enzyme ? (a) Mouth (b) Oesophagus (c) Stomach (d) Duodenum
Last Answer : (b) Oesophagus
Description : Which one is not enzyme (a) Trypsin (b) Lipase (c) Enterokinase (d) Enterocrinin
Last Answer : (d) Enterocrinin
Description : Enzyme arginase is found in (a) Mouth cavity (b) Stomach (c) Intestine (d) Liver
Last Answer : (d) Liver
Description : Destruction of which of the following enzyme causes cyanide poisoning (a) Zymogen (b) Cytochrome enzyme (c) Urease (d) None of these
Last Answer : (b) Cytochrome enzyme
Description : Substance which increase the activity of certain enzymes called (a) Pro-enzyme (b) Iso-enzymes (d) Co-enzymes (d) Catalysis
Last Answer : c
Description : Non protein part of enzyme is called (a) Iso-enzyme (b) Holo-enzyme (c) Apo-enzyme (d)Prosthatic group
Last Answer : (d)Prosthatic group
Description : By consumption of milk and milk products some human beings develop intestinal gas and diarrhoea due to absence of which enzyme (a) Lactase (b) Galactase (c) Protease (d) Rennin
Last Answer : (a) Lactase
Description : Invertase enzyme acts upon (a) Proteins (b) Maltose (c) Fructose (d) Sucrose
Last Answer : (d) Sucrose
Description : Enzyme responsible for the digestion of starch in food of main is Present in (e) Salivary and gastric secretion. (b) Salivary and pancreatic secretion (c) Gastric and pancreatic secretion (d) Gastric and duodenal secretion
Last Answer : (b) Salivary and pancreatic secretion
Description : Enterokinase is (a) Enzyme (b) Hormone (c) Vitamin (d) None
Last Answer : (a) Enzyme
Description : The enzyme which can act in Acidic and basic media both (a) Lipase (b) Trypsin (c) Pepsin (d) Ptyalin
Last Answer : (d) Ptyalin
Description : The enzyme for starch digestion (a) Maltase (b) Invertase (c) Lipase (d) Amylase
Last Answer : (d) Amylase
Description : Which enzyme digests plant protein (a) Pepsin (b) Erepsin (c) Renin (d) All these
Last Answer : (a) Pepsin
Description : Zymogen is (A) An intracellular enzyme (B) Serum enzyme (C) A complete extracellular enzyme (D) An inactivated enzyme
Description : If by radiation all nitrogenase enzyme are inactivated, then there will be no (a) fixation of nitrogen in legumes (b) fixation of atmospheric nitrogen (c) conversion from nitrate to nitrite in legumes (d) conversion from ammonium to nitrate in soil.
Last Answer : (a) fixation of nitrogen in legumes
Description : Pralidoxime can reactivate cholinesterase enzyme that has been inactivated by: A. Carbamate anticholinesterases B. Organophosphate anticholinesterases C. Both carbamate and organophosphate anticholinesterases D. Reversible anticholinesterases
Last Answer : B. Organophosphate anticholinesterases
Description : freezing nights have destroyed all my ponytail palms. will they come back in Spring?
Last Answer : Need Answer
Description : Are Toxins from pathogenic bacteria can be destroyed by freezing and cooking?
Last Answer : What is the answer ?
Description : Food is directed towards caecum & colon accordingly at the point (a) Haustra (b) Taeinae (c) Sacculus Rotendus (d) None
Last Answer : (c) Sacculus Rotendus
Description : Which of the following is located in the mitochondria? (A) Cytochrome oxidase (B) Succinate dehydrogenase (C) Dihydrolipoyl dehydrogenase (D) All of these
Last Answer : (D) All of these
Description : The surface tension in intestinal lumen between fat droplets and aqueous medium is decreased by (A) Bile Salts (B) Bile acids (C) Conc. H2SO4 (D) Acetic acid
Last Answer : (A) Bile Salts
Description : The phenomenon of osmosis is opposite to that of (A) Diffusion (B) Effusion (C) Affusion (D) Coagulation
Last Answer : (A) Diffusion
Description : The pH of blood is 7.4 when the ratio between H2CO3 and NaHCO3 is (A) 1 : 10 (B) 1 : 20 (C) 1 : 25 (C) 1 : 30
Last Answer : (B) 1 : 20
Description : The average pH of Urine is (A) 7.0 (B) 6.0 (C) 8.0 (D) 0.0
Last Answer : (B) 6.0
Description : The exchange of material takes place (A) Only by diffusion (B) Only by active transport (C) Only by pinocytosis (D) All of these
Description : The degradative Processess are categorized under the heading of (A) Anabolism (B) Catabolism (C) Metabolism (D) None of the above
Last Answer : (B) Catabolism
Description : Which one is the largest particulate of the cytoplasm? (A) Lysosomes (B) Mitochondria (C) Golgi apparatus (D) Entoplasmic reticulum
Last Answer : (B) Mitochondria
Description : Which one is the heaviest particulate component of the cell? (A) Nucleus (B) Mitochondria (C) Cytoplasm (D) Golgi apparatus
Last Answer : (A) Nucleus
Description : Which of the following statement is correct about membrane cholesterol? (A) The hydroxyl group is located near the centre of the lipid layer (B) Most of the cholesterol is in the form ... forms a rigid, planar Structure (D) The hydrocarbon chain of cholesterol projects into the extracellular fluid
Last Answer : (C) The steroid nucleus form forms a rigid, planar Structure
Description : All the following processes occur rapidly in the membrane lipid bilayer except (A) Flexing of fatty acyl chains (B) Lateral diffusion of phospholipids (C) Transbilayer diffusion of phospholipids (D) Rotation of phospholipids around their long axes
Last Answer : (C) Transbilayer diffusion of phospholipids
Description : Which of the following phospholipids is localized to a greater extent in the outer leaflet of the membrane lipid bilayer? (A) Choline phosphoglycerides (B) Ethanolamine phosphoglycerides (C) Inositol phosphoglycerides (D) Serine phosphoglycerides
Last Answer : (A) Choline phosphoglycerides
Description : Which are the cholesterol esters that enter cells through the receptor-mediated endocytosis of lipoproteins hydrolyzed? (A) Endoplasmin reticulum (B) Lysosomes (C) Plasma membrane receptor (D) Mitochondria
Last Answer : (B) Lysosomes
Description : HDL is synthesized and secreted from (A) Pancreas (B) Liver (C) Kidney (D) Muscle
Last Answer : (B) Liver
Description : Synthesis of prostaglandinsis is inhibited by (A) Aspirin (B) Arsenic (C) Fluoride (D) Cyanide
Last Answer : (A) Aspirin
Description : Milk is deficient of which mineral? (A) Phosphorus (B) Sodium (C) Iron (D) Potassium
Last Answer : (C) Iron
Description : Milk is deficient in which vitamins? (A) Vitamin C (B) Vitamin A (C) Vitamin B2 (D) Vitamin K
Last Answer : (A) Vitamin C