Vitamin D is manufactured by the activation of ergosterol by U.V light in the (a) liver (b) skin (c) bone (d) muscle

Vitamin D is manufactured by the activation of ergosterol by U.V light in the (a) liver (b) skin (c) bone (d) muscle
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$ Ergosterol is a lipid that changes to vitamins D on activation by UV light. ! Iron is a biochemical compoent of haemoglobin.

Description : $ Ergosterol is a lipid that changes to vitamins D on activation by UV light. ! Iron is a biochemical compoent of haemoglobin.

Last Answer : $ Ergosterol is a lipid that changes to vitamins D on activation by UV light. ! Iron is a biochemical ... is wrong D. If both As and R are wrong.

One international unit (I.U) of vitamin D is defined as the biological activity of (A) 0.025 µg of cholecalciferol (B) 0.025 µg of 7-dehydrocholecalciferol (C) 0.025 µg of ergosterol (D) 0.025 µg of ergocalciferol VITAMINS 113

Description : One international unit (I.U) of vitamin D is defined as the biological activity of (A) 0.025 µg of cholecalciferol (B) 0.025 µg of 7-dehydrocholecalciferol (C) 0.025 µg of ergosterol (D) 0.025 µg of ergocalciferol VITAMINS 113

Last Answer : Answer : A

Scar formation is part of the normal healing process following injury. Which of the following tissues has the ability to heal without scar formation? a. Liver b. Skin c. Bone d. Muscle

Description : Scar formation is part of the normal healing process following injury. Which of the following tissues has the ability to heal without scar formation? a. Liver b. Skin c. Bone d. Muscle

Last Answer : Answer: c Every tissue in the body undergoes reparative processes after injury. Bone has the unique ability to heal without scar and liver has the potential to regenerate parenchyma, the only organ ... scar (cirrhosis) as well. With these exceptions, all other mature human tissues heal with scar

Vitamin D2 is also said to be (A) Activated ergosterol (B) Fergocalciferol (C) Viosterol (D) All of these

Description : Vitamin D2 is also said to be (A) Activated ergosterol (B) Fergocalciferol (C) Viosterol (D) All of these

Last Answer : Answer : D

The precursor of bile salts, sex hormones and vitamin D is (A) Diosgenin (B) Cholesterol (C) Campesterol (D) Ergosterol

Description : The precursor of bile salts, sex hormones and vitamin D is (A) Diosgenin (B) Cholesterol (C) Campesterol (D) Ergosterol

Last Answer : Answer : B

Which cells in our body have the least regenerative power? (1) Brain cells (2) Muscle cells (3) Bone cells (4) Liver cells

Description : Which cells in our body have the least regenerative power? (1) Brain cells (2) Muscle cells (3) Bone cells (4) Liver cells

Last Answer : (1) Brain cells Explanation: Brain cells do not regenerate. Once lost, they do not come back. Research from Karolinska Institute in Sweden haves shown that the nerve cells of the brain remain the same throughout a person's life.

Which cells in our body have the least regenerative power? (1) Brain cells (2) Muscle cells (3) Bone cells (4) Liver cells

Description : Which cells in our body have the least regenerative power? (1) Brain cells (2) Muscle cells (3) Bone cells (4) Liver cells

Last Answer : (1) Brain cells Explanation: Brain cells do not regenerate. Once lost, they do not come back. Research from Karolinska Institute in Sweden haves shown that the nerve cells of the brain remain the same throughout a person's life.

Vitamin B12 is (A) Not stored in the body (B) Stored in bone marrow (C) Stored in liver (D) Stored in RE cells

Description : Vitamin B12 is (A) Not stored in the body (B) Stored in bone marrow (C) Stored in liver (D) Stored in RE cells

Last Answer : Answer : C

A burn which involves 2 layers of the skin and estroys the nerves and blood vessels, but does not go down to muscle or bone is a A. first-degree burn B. second-degree burn C. third-degree burn D. full-thickness burn

Description : A burn which involves 2 layers of the skin and estroys the nerves and blood vessels, but does not go down to muscle or bone is a A. first-degree burn B. second-degree burn C. third-degree burn D. full-thickness burn

Last Answer : Ans: B

During which stage of pressure ulcer development does the ulcer extend into the underlying structures, including the muscle and possibly the bone? a) Stage IV A stage IV pressure ulcer extends into the underlying structure, including the muscle and possibly the bone. b) Stage III A stage III ulcer extends into the subcutaneous tissue. c) Stage II A stage II ulcer exhibits a break in the skin through the epidermis or dermis. d) Stage I A stage I pressure ulcer is an area of nonblanchable erythema, tissue swelling, and congestion, and the patient complains of discomfort.

Description : During which stage of pressure ulcer development does the ulcer extend into the underlying structures, including the muscle and possibly the bone? a) Stage IV A stage IV pressure ulcer ... area of nonblanchable erythema, tissue swelling, and congestion, and the patient complains of discomfort.

Last Answer : a) Stage IV A stage IV pressure ulcer extends into the underlying structure, including the muscle and possibly the bone.

During which stage of pressure ulcer development does the ulcer extend into the subcutaneous tissue? a) Stage III Clinically, a deep crater with or without undermining of adjacent tissues is noted. b) Stage IV A stage IV pressure ulcer extends into the underlying structure, including the muscle and possibly the bone. c) Stage II A stage II ulcer exhibits a break in the skin through the epidermis or dermis. d) Stage I A stage I pressure ulcer is an area of nonblanchable erythema, tissue swelling, and congestion, and the patient complains of discomfort.

Description : During which stage of pressure ulcer development does the ulcer extend into the subcutaneous tissue? a) Stage III Clinically, a deep crater with or without undermining of adjacent tissues is ... area of nonblanchable erythema, tissue swelling, and congestion, and the patient complains of discomfort.

Last Answer : a) Stage III Clinically, a deep crater with or without undermining of adjacent tissues is noted.

Vit. D is synthesised in presence of sunlight in (a) Skin (b) Bone(c) Liver (d) Spleen

Description : Vit. D is synthesised in presence of sunlight in (a) Skin (b) Bone(c) Liver (d) Spleen

Last Answer : (a) Skin

Fucosidosis is characterized by (A) Muscle spasticity (B) Liver enlargement (C) Skin rash (D) Kidney failure

Description : Fucosidosis is characterized by (A) Muscle spasticity (B) Liver enlargement (C) Skin rash (D) Kidney failure

Last Answer : Answer : A

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)

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)

Deficiency of vitamin D causes (A) Ricket and osteomalacia (B) Tuberculosis of bone (C) Hypthyroidism (D) Skin cancer

Description : Deficiency of vitamin D causes (A) Ricket and osteomalacia (B) Tuberculosis of bone (C) Hypthyroidism (D) Skin cancer

Last Answer : Answer : A

Rickets is the deficiency disease of Vitamin D, in which the affected part is the - (1) skin (2) hair (3) bone (4) blood

Description : Rickets is the deficiency disease of Vitamin D, in which the affected part is the - (1) skin (2) hair (3) bone (4) blood

Last Answer : (3) bone Explanation: Rickets is a softening of bones in children due to deficiency or impaired metabolism of vitamin D, phosphorus or calcium, potentially leading to fractures and deformity. Rickets is ... lead to rickets (cases of severe diarrhea and vomiting may be the cause of the deficiency).

Rickets is the deficiency disease of Vitamin D, in which the affected part is the (1) skin (2) hair (3) bone (4) blood

Description : Rickets is the deficiency disease of Vitamin D, in which the affected part is the (1) skin (2) hair (3) bone (4) blood

Last Answer : bone

The conversion of carotenoids to Vitamin A takes place in (A) Intestine (B) Liver (C) Kidney (D) Skin

Description : The conversion of carotenoids to Vitamin A takes place in (A) Intestine (B) Liver (C) Kidney (D) Skin

Last Answer : Answer : A

25-Hydroxylation of vitamin D occurs in (A) Skin (B) Liver (C) Kidneys (D) Intestinal mucosa

Description : 25-Hydroxylation of vitamin D occurs in (A) Skin (B) Liver (C) Kidneys (D) Intestinal mucosa

Last Answer : Answer : B

In human body, Vitamin A is stored in the (1) liver (2) skin (3) lung (4) kidney

Description : In human body, Vitamin A is stored in the (1) liver (2) skin (3) lung (4) kidney

Last Answer : (1) liver Explanation: Fat-soluble vitamins are stored in the body in organs such as the liver. Most of the vitamin A that we consume goes to the liver to be stored until it is needed by another part of the body.

The following are true about calcium regulating hormones: a. calcitonin increases the plasma calcium concentration b. vitamin D is produced in the skin c. vitamin D is metabolized to its active form in the liver and kidney. d. vitamin D increases calcium absorption from the gut

Description : The following are true about calcium regulating hormones: a. calcitonin increases the plasma calcium concentration b. vitamin D is produced in the skin c. vitamin D is metabolized to its active form in the liver and kidney. d. vitamin D increases calcium absorption from the gut

Last Answer : vitamin D increases calcium absorption from the gut

The mechanism of action of cyclosporine involves (a) Activation of calcineurin (b) Binding to cyclophilin to cause inhibition of a cytoplasmic phosphatase (c) Blockade of interleukin – 2- receptors (d) Inhibition of phospholipase A2 (e) Suppression of bone marrow progenitors

Description : The mechanism of action of cyclosporine involves (a) Activation of calcineurin (b) Binding to cyclophilin to cause inhibition of a cytoplasmic phosphatase (c) Blockade of interleukin – 2- receptors (d) Inhibition of phospholipase A2 (e) Suppression of bone marrow progenitors

Last Answer : Ans: B

Polymorphonuclear leukocytes (or PMNs) A- can be attracted to the site of an infection following activation of complement B- are derived from bone marrow stem cells C- are a type of phagocyte that can engulf and kill bacteria D- .all of the above

Description : Polymorphonuclear leukocytes (or PMNs) A- can be attracted to the site of an infection following activation of complement B- are derived from bone marrow stem cells C- are a type of phagocyte that can engulf and kill bacteria D- .all of the above

Last Answer : .all of the above

Typical results of beta-receptor activation include which one of the following? (a) Hypoglycemia (b) Lipolysis (c) Glycogen synthesis (d) Decreased skeletal muscle tremor (e) Decreased rennin secretion

Description : Typical results of beta-receptor activation include which one of the following? (a) Hypoglycemia (b) Lipolysis (c) Glycogen synthesis (d) Decreased skeletal muscle tremor (e) Decreased rennin secretion

Last Answer : Ans: B

The mechanism by which neostigmine improves contraction of myasthenic muscle involves: A. Repetitive binding of the acetylcholine molecules to the same receptors at the muscle endplate B. Diffusion of acetylcholine released from motor nerve endings to a wider area activating neighbouring receptors C. Activation of motor end-plate receptors by neostigmine molecules themselves D. All of the above

Description : The mechanism by which neostigmine improves contraction of myasthenic muscle involves: A. Repetitive binding of the acetylcholine molecules to the same receptors at the muscle endplate B. Diffusion of ... Activation of motor end-plate receptors by neostigmine molecules themselves D. All of the above

Last Answer : D. All of the above

The mechanism by which neostigmine improves contraction of myasthenic muscle involves: A. Repetitive binding of the acetylcholine molecules to the same receptors at the muscle endplate B. Diffusion of acetylcholine released from motor nerve endings to a wider area activating neighbouring receptors C. Activation of motor end-plate receptors by neostigmine molecules themselves D. All of the above

Description : The mechanism by which neostigmine improves contraction of myasthenic muscle involves: A. Repetitive binding of the acetylcholine molecules to the same receptors at the muscle endplate B. Diffusion of ... Activation of motor end-plate receptors by neostigmine molecules themselves D. All of the above

Last Answer : D. All of the above

Which of the following statements are true of the multiple organ dysfunction syndrome (MODS)? A. The “two-hit” model proposes that secondary MODS may be produced when even a relatively minor second insult reactivates, in a more amplified form, the systemic inflammatory response that was primed by an initial insult to the host. B. The systemic inflammatory response syndrome (SIRS), shock due to sepsis or SIRS, and MODS may be regarded as a continuum of illness severity. C. Prolonged stimulation or activation of Kupffer cells in the liver is thought to be a critical factor in the sustained, uncontrolled release of inflammatory mediators. D. The incidence of MODS in intensive care units has decreased owing to increased awareness, prevention, and treatment of the syndrome.

Description : Which of the following statements are true of the multiple organ dysfunction syndrome (MODS)? A. The two-hit model proposes that secondary MODS may be produced when even a relatively ... intensive care units has decreased owing to increased awareness, prevention, and treatment of the syndrome.

Last Answer : Answer: ABC DISCUSSION: MODS is part of a clinical continuum that begins with the systemic inflammatory response syndrome, which is the host's stress response to any major insult such ... pathogenesis of MODS, the incidence of MODS continues to increase without a significant improvement in outcome

Which one of the following is not a function of the liver? (1) Regulation of blood sugar (2) Enzyme activation (3) Detoxiation (4) Reproduction

Description : Which one of the following is not a function of the liver? (1) Regulation of blood sugar (2) Enzyme activation (3) Detoxiation (4) Reproduction

Last Answer : (4) Reproduction Explanation: Liver is the body's largest internal organ. It has many functions in the body like it helps in protein synthesis and blood clotting, manufacturing triglycerides and cholesterol, glycogen synthesis, and bile production.

Which one of the following is not a function of the liver? (1) Regulation of blood sugar (2) Enzyme activation (3) Detoxiation (4) Reproduction

Description : Which one of the following is not a function of the liver? (1) Regulation of blood sugar (2) Enzyme activation (3) Detoxiation (4) Reproduction

Last Answer : (4) Reproduction Explanation: Liver is the body’s largest internal organ. It has many functions in the body like it helps in protein synthesis and blood clotting, manufacturing triglycerides and cholesterol, glycogen synthesis, and bile production.

The active transport of ‘Ca’ is regulated by __________ which is synthesized in kidnyes. (A) Cholecalciferol (B) Ergosterol (C) 25-OH cholecalciferol (D) 1, 25-di OH-Cholecalciferol

Description : The active transport of ‘Ca’ is regulated by __________ which is synthesized in kidnyes. (A) Cholecalciferol (B) Ergosterol (C) 25-OH cholecalciferol (D) 1, 25-di OH-Cholecalciferol

Last Answer : Answer : D

A provitamin D synthesized in human beings is (A) Ergosterol (B) 7-Dehydrocholesterol (C) Cholecalciferol (D) 25-Hydroxycholecalciferol

Description : A provitamin D synthesized in human beings is (A) Ergosterol (B) 7-Dehydrocholesterol (C) Cholecalciferol (D) 25-Hydroxycholecalciferol

Last Answer : Answer : B

Ergosterol is found in (A) Animals (B) Plants (C) Bacteria (D) All of these

Description : Ergosterol is found in (A) Animals (B) Plants (C) Bacteria (D) All of these

Last Answer : Answer : B

Provitamin D3 is (A) Cholecalciferol (B) Ergosterol (C) 7-Dehydrocholesterol (D) Ergocaliferol

Description : Provitamin D3 is (A) Cholecalciferol (B) Ergosterol (C) 7-Dehydrocholesterol (D) Ergocaliferol

Last Answer : Answer : C

A metabolite which is common to pathways of cholesterol biosynthesis from acetyl-CoA and cholecalciferol formation from cholesterol is (A) Zymosterol (B) Lumisterol (C) Ergosterol (D) 7 Dehydrocholesterol

Description : A metabolite which is common to pathways of cholesterol biosynthesis from acetyl-CoA and cholecalciferol formation from cholesterol is (A) Zymosterol (B) Lumisterol (C) Ergosterol (D) 7 Dehydrocholesterol

Last Answer : Answer : D

Unpleasant odours and taste in a fat (rancidity) can be delayed or prevented by the addition of (A) Lead (B) Copper (C) Tocopherol (D) Ergosterol

Description : Unpleasant odours and taste in a fat (rancidity) can be delayed or prevented by the addition of (A) Lead (B) Copper (C) Tocopherol (D) Ergosterol

Last Answer : Answer : C

By which of the following means antifungal chemotherapeutic agents may affect fungi? A- Interfere with nuclear division by preventing the aggregation of microtubules needed for mitosis B- Interfere with normal nucleic acid synthesisInterfere with ergosterol biosynthesis and thus alter the structure of the cytoplasmic C- membrane as well as the function of several membrane-bound enzymes like thoseinvolved in nutrient transport and chitin synthesis D- all of these

Description : By which of the following means antifungal chemotherapeutic agents may affect fungi? A- Interfere with nuclear division by preventing the aggregation of microtubules needed for mitosis B- ... membrane-bound enzymes like thoseinvolved in nutrient transport and chitin synthesis D- all of these

Last Answer : all of these

Leishmania donovani is susceptible to certain antifungal drugs because both fungi and Leishmania: A. Utilise purine salvage pathway B. Utilise similar glycolytic mechanisms C. Have similar topoisomerase II enzyme D. Have ergosterol in their cell membranes

Description : Leishmania donovani is susceptible to certain antifungal drugs because both fungi and Leishmania: A. Utilise purine salvage pathway B. Utilise similar glycolytic mechanisms C. Have similar topoisomerase II enzyme D. Have ergosterol in their cell membranes

Last Answer : D. Have ergosterol in their cell membranes

The most probable mechanism of action of imidazole antifungal drugs is: A. They bind to ergosterol in fungal cell membrane and make it leaky B. They interfere with ergosterol synthesis by fungi C. They interfere with fungal mitosis D. They block oxidative phosphorylation in fungi

Description : The most probable mechanism of action of imidazole antifungal drugs is: A. They bind to ergosterol in fungal cell membrane and make it leaky B. They interfere with ergosterol synthesis by fungi C. They interfere with fungal mitosis D. They block oxidative phosphorylation in fungi

Last Answer : B. They interfere with ergosterol synthesis by fungi

The polyene antibiotics act by: A. Inhibiting fungal cytochrome P450 enzyme B. Binding to ergosterol and creating micropores in fungal cell membrane C. Inhibiting fungal DNA synthesis D. Disorienting microtubules in fungal cells

Description : The polyene antibiotics act by: A. Inhibiting fungal cytochrome P450 enzyme B. Binding to ergosterol and creating micropores in fungal cell membrane C. Inhibiting fungal DNA synthesis D. Disorienting microtubules in fungal cells

Last Answer : B. Binding to ergosterol and creating micropores in fungal cell membrane

Which is the vitamin that is most readily manufactured in our bodies? -General Knowledge

Description : Which is the vitamin that is most readily manufactured in our bodies? -General Knowledge

Last Answer : The answer is 'Vitamin D'

Which is the vitamin that is most readily manufactured in our bodies? -General Knowledge

Description : Which is the vitamin that is most readily manufactured in our bodies? -General Knowledge

Last Answer : answer:

Which is the vitamin that is most readily manufactured in our bodies? -General Knowledge

Description : Which is the vitamin that is most readily manufactured in our bodies? -General Knowledge

Last Answer : answer:

The vitamin that is most readily manufactured in our bodies is – (1) vitamin A (2) vitamin B (3) vitamin C (4) vitamin D

Description : The vitamin that is most readily manufactured in our bodies is – (1) vitamin A (2) vitamin B (3) vitamin C (4) vitamin D

Last Answer : (4) vitamin D Explanation: Vitamin D is not really a vitamin, but a precursor for the most potent steroid hormone in the human body. It can be obtained from exposure to the sun's ultraviolet (UV) radiation, especially during the early morning hours.

The vitamin that is most readily manufactured in our bodies is (1) vitamin A (2) vitamin B (3) vitamin C (4) vitamin D

Description : The vitamin that is most readily manufactured in our bodies is (1) vitamin A (2) vitamin B (3) vitamin C (4) vitamin D

Last Answer : vitamin D

Characteristics of Vitamin D and its metabolites include which one of the following? (a) Act to decrease serum levels of calcium (b) Activation of their Vitamin D receptors increases cellular CAMP (c) Calcitriol is the major derivative responsible for increasing intestinal absorption of phosphate (d) Metabolites of Vitamin D increase renal excretion of calcium (e) Vitamin D deficiency results in Pager’s disease

Description : Characteristics of Vitamin D and its metabolites include which one of the following? (a) Act to decrease serum levels of calcium (b) Activation of their Vitamin D receptors increases cellular CAMP ... Vitamin D increase renal excretion of calcium (e) Vitamin D deficiency results in Pager's disease

Last Answer : Ans: C

The characteristic feature(s) of dihydropyridine calcium channel blockers is/are: A. They have minimal negative inotropic action on the heart B. They have no effect on A-V conduction C. They do not affect the activation-inactivation kinetics of the calcium channels D. All of the above

Description : The characteristic feature(s) of dihydropyridine calcium channel blockers is/are: A. They have minimal negative inotropic action on the heart B. They have no effect on A-V conduction C. They do not affect the activation-inactivation kinetics of the calcium channels D. All of the above

Last Answer : D. All of the above

A ligament is (a) A fibrous tissue that joins the muscle to bone (b) A type of amorphous gel that cements non movable joints together (c) A type of fibrous connective tissue that joins bones together at joints (d) Only formed to repair damaged muscle tissue

Description : A ligament is (a) A fibrous tissue that joins the muscle to bone (b) A type of amorphous gel that cements non movable joints together (c) A type of fibrous connective tissue that joins bones together at joints (d) Only formed to repair damaged muscle tissue

Last Answer : Ans:(c)

Exposure to sunshine and diet rich in fish liver oils, oatmeal and sweet potatoes will not cause the deficiency disease 1. Osteomalacia 2. Osteoporosis and frequent bone fractures 3. Rickets 4. Fatty liver (a) 1, 2 (b) 1, 2, 3 (c) 1, 3 (d) 1, 2, 3, 4

Description : Exposure to sunshine and diet rich in fish liver oils, oatmeal and sweet potatoes will not cause the deficiency disease 1. Osteomalacia 2. Osteoporosis and frequent bone fractures 3. Rickets 4. Fatty liver (a) 1, 2 (b) 1, 2, 3 (c) 1, 3 (d) 1, 2, 3, 4

Last Answer : Ans:(b)

The tissue that forms the basal framework of lymphoid organs, bone marrow and liver are (a) lymphoid tissue (b) areolar tissue (c) reticular tissue (d) elastic tissue

Description : The tissue that forms the basal framework of lymphoid organs, bone marrow and liver are (a) lymphoid tissue (b) areolar tissue (c) reticular tissue (d) elastic tissue

Last Answer : Ans:(d)