Description : The colour of human skin is produced by (1) Haemoglobin(2) Insulin (3) Adrenaline (4) Melanin
Last Answer : Melanin
Description : The brown-black pigment of the skin that is transferred to other epidermal cells and gives the skin its color is called A. albumin B. collagen C. keratin D. melanin
Last Answer : Ans: D
Description : The pigment which gives colour to the human skin is – (1) Melanin (2) Rhodopsin (3) Iodopsin (4) Anthocyanin
Last Answer : (1) Melanin Explanation: Human skin color is primarily due to the presence of melanin in the skin. Skin color ranges from almost black to white with a pinkish tinge due to blood vessels underneath. In animals melanin pigments are derivatives of the amino acid tyrosine.
Description : The pigment which gives colour to the human skin is (1) Melanin (2) Rhodopsin (3) Iodopsin (4) Anthocyanin
Description : Which one of the following statements about the particular entity is true ? (a) Centromere is found in animal cells, which produces aster during cell division. (b) The gene for producing insulin is ... cell. (c) Nucleosome is formed of nucleotides. (d) DNA consists of core of eight histones.
Last Answer : (b) The gene for producing insulin is present in every body cell.
Description : Which of the following makes the skin layer impervious to water? (1) Collagen (2) Melanin (3) Keratin (4) Chitin
Last Answer : (3) Keratin Explanation: Keratin is a family of fibrous structural proteins. Keratin is the key structural material making up the outer layer of human skin. It is also the key structural component ... layer of the skin almost waterproof, and along with collagen and elastin, gives skin its strength.
Description : Which of the following makes the skin layer impervious to water ? (1) Collagen (2) Melanin (3) Keratin (4) Chitin
Last Answer : Keratin
Description : Which vitamin is available to the human body through sun bathing? A. Vitamin A B. Vitamin D (Answer) C. Vitamin K D. Vitamin B12
Last Answer : B. Vitamin D (Answer)
Description : The pancreas secrets------? A. Insulin (Answer) B. Vitamin A C. Bile juice D. none of these
Last Answer : A. Insulin (Answer)
Description : The standard management oral anticoagulant therapy for chronic treatment of venous thromboembolism is with the drug warfarin. Which of the following statement(s) is/are true concerning the administration ... warfarin be continued for at least one year after initial episode of deep venous thrombosis
Last Answer : Answer: a, b Warfarin interferes with the vitamin K dependent clotting factors II, VII, IX and X, protein C, and protein S. An important complication of warfarin is skin ... the benefit from anticoagulant therapy and thus is the basis for discontinuing warfarin administration at this time
Description : Which of the following statements is NOT true about diabetes mellitus? A) Type II diabetes is much more common than type I. B) Insulin injections are required in both type I and type II ... -sugar diet. E) Symptoms of diabetes include excessive thirst, frequent urination, and glucose in the urine.
Last Answer : B) Insulin injections are required in both type I and type II diabetes.
Description : How human insulin is prepared by recombined DNA technique? -Biology
Last Answer : answer:
Description : The first protein synthesized by recombinant DNA technology was (A) Streptokinase (B) Human growth hormone (C) Tissue plasminogen activator (D) Human insulin
Last Answer : Answer : D
Description : The first human hormone produced by recombinant DNA technology is (a) insulin (b) estrogen (c) thyroxin (d) progesterone
Last Answer : (a) insulin
Description : Which of the following features of genetic code does allow bacteria to produce human insulin by recombinant DNA technology? (a) Genetic code is specific. (b) Genetic code is not ambiguous. (c) Genetic code is redundant. (d) Genetic code is nearly universal
Last Answer : (c) Genetic code is redundant.
Description : Which of the following features of genetic code does allow bacteria to produce human insulin by recombinant DNA technology? (a) Genetic code is specific. (b) Genetic code is not ambiguous. (c) Genetic code is redundant. (d) Genetic code is nearly universal.
Last Answer : (d) Genetic code is nearly universal
Description : Answer: a, b, c, d Free oxygen radicals are chemical species that are intermediates in the normal process of cellular respiration. Oxidants that are free radicals have been implicated as initiators of ... a. C-reactive protein b. Serum amyloid c. a -Proteinase inhibitor d. Fibrinogen e. Albumin
Last Answer : Answer: a, b, c, d The acute-phase response is a series of homeostatic responses of the organism to tissue injury in infection and inflammation. After an inflammatory stimulus occurs, a number ... 30% to 50% of the level before injury. The reason for the decrease in production is poorly understood
Description : What is Melanin ?
Last Answer : Melanin is a type of pigment. It is located under human skin and determines the color of human skin. If the amount of melanin is high then the color of the skin becomes black and if the amount is low ... pale. The amount of melanin in the body can be controlled to some extent if away from the sun.
Last Answer : The main function of melanin in the body is to protect the body from the harmful effects of sunlight.
Description : Melanin pigment protects from which of the following radiations ?
Last Answer : Melanin pigment protects from which of the following radiations ? A. X-rays B. Infra-red rays C. Visible rays D. UV rays
Description : Melanin protects from
Last Answer : Melanin protects from A. UV rays B. Visible rays C. Infrared rays D. X-rays
Description : MSH causes (A) Dispersal of melanin granules in melanocytes (B) Increase in melanin concentration in melanocytes (C) Decerease in melanin concentration in melanocytes (D) Increase in number of melanocytes
Last Answer : Answer : B
Description : Retina contains this photosensitive pigment: (A) Rhodopsin (B) Opsin (C) Retinol (D) Melanin
Last Answer : Answer : A
Description : The highest concentration of cystine can be found in (A) Melanin (B) Chondroitin sulphate (C) Myosin (D) Keratin
Description : Formation of melanin from tyrosine requires the action of (A) Dopa decarboxylation (B) Diamine oxidase (C) Peroxidase (D) Tyrosinase
Description : DOPA is an intermediate in the synthesis of (A) Thyroid hormones (B) Catecholamines (C) Melanin (D) Catecholamines and melanin
Description : All the following statements about phenylketonuria are correct except (A) Phenylalanine cannot be converted into tyrosine (B) Urinary excretion of phenylpyruvate and phenyllactate is increased (C) It ... diet (D) It leads to decreased synthesis of thyroid hormones, catecholamines and melanin
Description : Tryptophan could be considered as precursor of (A) Melanotonin (B) Thyroid hormones (C) Melanin (D) Epinephrine
Description : The fo l low ing substances are ce l l inclusions except (A) Melanin (B) Glycogen (C) Lipids (D) Centrosome
Last Answer : D
Description : Grey hair is caused due to – (1) aging of epidermal cells (2) death of dermal cells (3) loss of sebum in epidermal cells (4) loss of melanin in epidermal cells
Last Answer : (4) loss of melanin in epidermal cells Explanation: loss of melanin in epidermal cells.
Description : True statements about chloroquine include: a. is safer than hydroxychloroquine at equivalent dose b. can cause corneal deposition c. causes posterior subcapsular cataract d. chloroquine is bound to the melanin of the retinal pigment epithelium e. causes reversible toxic maculopathy
Last Answer : can cause corneal deposition
Description : Hormones thyroxine, adrenaline and the pigment melanin are formed from (a) tyrosine (b) proline (c) tryptophan (d) glycine.
Last Answer : (a) tyrosine
Description : In the chemistry of vision in mammals, the photosensitive substance is called (a) rhodopsin (b) melanin (c) sclerotin (d) retinol.
Last Answer : (a) rhodopsin
Description : Mast cells of connective tissue contain (a) vasopressin and relaxin (b) heparin and histamine (c) heparin and calcitonin (d) serotonin and melanin.
Last Answer : (b) heparin and histamine
Description : Grey hair is caused due to (1) aging of epidermal cells (2) death of dermal cells (3) loss of sebum in epidermal cells (4) loss of melanin in epidermal cells
Last Answer : loss of melanin in epidermal cells
Description : Which one of the following can be synthesized by Liver ----? A. Vitamin B6 B. Vitamin B12 C. Vitamin K (Answer) D. Vitamin E
Last Answer : C. Vitamin K (Answer)
Description : Cow milk is a rich source of------? A. vitamin C B. vitamin B C. vitamin A (Answer) D. vitamin K
Last Answer : C. vitamin A (Answer)
Description : Which Vitamin gets destroyed on heating? A. B B. E C. K D. C (Answer)
Last Answer : D. C (Answer)
Description : Sunlight is a Great Source of ------? A. vitamin C B. vitamin D (Answer) C. vitamin E D. vitamin K
Last Answer : B. vitamin D (Answer)
Description : One of the following is a water soluble vitamin? A. Vitamin A B. Vitamin D C. Vitamin K D. None (Answer)
Last Answer : D. None (Answer)
Description : Which of the following helps in clotting of blood? A. Vitamin B1 B. Vitamin B2 C. Vitamin D D. Vitamin K (Answer)
Last Answer : D. Vitamin K (Answer)
Description : Which of the following is a function of Vitamin A in the body? A. Vision, bone and body growth B. Immune defenses, maintenance of body linings and skin C. Normal cell development and reproduction D. All of the above (Answer)
Last Answer : D. All of the above (Answer)
Description : Which of the following processes is responsible for producing the sand dunes in western Rajasthan? (1) Wind erosion (2) Erosion by water (3) Wind deposition (4) Mechanical weathering
Last Answer : (3) Wind deposition Explanation: In physical geography, a dune is a hill of sand built either by wind or water flow. Dunes occur in different forms and sizes, formed by interaction with the flow ... the sand grains: and (3) a topography whereby the sand particles lose their momentum and settle out.
Description : Oxidase enzymes responsible for producing H2O2 are present in a. Mitochondria b. Ribosomes c. Peroxisomes d. Polysomes
Last Answer : Peroxisomes
Description : Component of blood responsible for producing antibodies is (a) thrombocytes (b) monocytes (c) erythrocytes (d) lymphocytes
Last Answer : (d) lymphocytes.
Description : Which of the following processes is responsible for producing the sand dunes in western Rajasthan ? (1) Wind erosion (2) Erosion by water (3) Wind deposition (4) Mechanical weathering
Last Answer : Wind deposition
Description : Which gland is responsible for the secretion of insulin? -Do You Know?
Description : Which gland is responsible for the secretion of Insulin?
Last Answer : Pancreas
Description : Which gland is responsible for the secretion of insulin?
Last Answer : Pancrease
Description : 1. In which country were the first Asian Games held? 2. Which game does Anuja Thakur play? 3. Which gland is responsible for the secretion of insulin? 4. The small and marginal farmers will get ... occurs when wind rises up along a hill or mountain barrier? 20. By whom was Kadambari was written?
Last Answer : Answer : 1. India 2. Billiards 3. Pancrease 4. Ganga Kalyan Yojna 5. Chanhu-daro 6. By 1 year at a time 7. 50 K 8. Increasing steadily 9. A dying star 10. Pataliputra 11. Franklin Roosevelt ... group of stars 15. Udayin 16. Limestone and clay 17. Geneva 18. Interest payment 19. Orographic 20. Bana