What are the vitamins which make up the B complex? Which problems does the lack of these vitamins cause?

What are the vitamins which make up the B complex? Which problems does the lack of these vitamins cause?
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Vitamins of the B complex are: thiamin, or vitamin B1; riboflavin, or vitamin B2, and niacin (B3), essential for the constitution of the hydrogen acceptors FAD, NAD and NADP of the energetic metabolism; pyridoxine, or B6; and cyanocobalamin, or vitamin B12. Deficiency of vitamin B1 causes beriberi, loss of appetite and fatigue. The lack of vitamin B2 causes mucosal injuries in the mouth, tongue and lips. Deficiency of niacin causes nervousness, digestive disturbances, loss of energy and pellagra. Lack of vitamin B6 causes skin lesions, irritation and convulsions. Vitamin B12 acts together with folic acid and its deficiency causes cell division disruptions leading to pernicious anemia (a type of megaloblastic and nutrient deficiency anemia). The absorption of vitamin B12 depends on another substance called the intrinsic factor secreted by the gastric mucosa. Nutrition Vitamins - Image Diversity: pellagra
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Decrease in absorption of which of the following vitamins in the geriatric patient results in pernicious anemia? a) B12 Vitamin B12 requires the intrinsic factor secreted by the gastric mucosa for absorption. b) C Lack of vitamin C may cause development of signs and symptoms of scurvy. c) D Vitamin D deficiency results in an inability to absorb calcium. d) B6 Vitamin B6 affects neuromuscular function.

Description : Decrease in absorption of which of the following vitamins in the geriatric patient results in pernicious anemia? a) B12 Vitamin B12 requires the intrinsic factor secreted by the gastric mucosa for ... results in an inability to absorb calcium. d) B6 Vitamin B6 affects neuromuscular function.

Last Answer : a) B12 Vitamin B12 requires the intrinsic factor secreted by the gastric mucosa for absorption.

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Lack of Vitamins for Dry Skin

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The most significant challenge to project managers is _____. a. lack of project management training b. no one really understands how to manage a complex systems development project c. the lack of tools that can assist in controlling project progress d. unrealistic schedule demands by project sponsors

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Last Answer : d. unrealistic schedule demands by project sponsors

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The cause of Heart attack is: (1) bacteria (2) virus (3) lack of blood supply to the heart (4) impairment of heart’s working due to unknown reason

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Description : What vitamins cause skin yellow skin?

Last Answer : What is the answer ?

In new born infants phototherapy may cause hyperbilirubinemia with deficiency of (A) Thiamin (B) Riboflavin (C) Ascorbic acid (D) Pantothenic acid VITAMINS 115

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Last Answer : Answer : B

What is the difference between water-soluble and fat-soluble vitamins? Why can fat-soluble vitamins cause harm when ingested in excess?

Description : What is the difference between water-soluble and fat-soluble vitamins? Why can fat-soluble vitamins cause harm when ingested in excess?

Last Answer : Water-soluble vitamins are those soluble in water. Fat-soluble vitamins are those soluble in oil (lipids, fat). Vitamin C and the vitamins of the B complex are examples of water-soluble vitamins ... to accumulate in tissues with toxic effect when they are ingested in amounts over what is necessary.

Hormone receptors that stimulate cAMP production (A) are part of a complex of two proteins that transform the external signal into internal cAMP production (B) are proteins distinct and separate from those that catalyze the production of cAMP (C) cause release of the catalytic subunit upon binding of the hormone (D) are not very specific and bind a number of different hormones

Description : Hormone receptors that stimulate cAMP production (A) are part of a complex of two proteins that transform the external signal into internal cAMP production (B) are proteins distinct and separate from those ... binding of the hormone (D) are not very specific and bind a number of different hormones

Last Answer : Answer : B

For a heterogeneous catalytic reaction (A) Free energy of activation is lowered in the presence of catalyst, which remains unchanged at the end of reaction (B) A relatively small amount of catalyst can cause the conversion of large amount of reactants which does not mean that catalyst concentration is important (C) The catalyst does not form an intermediate complex with the reactant (D) The surface of the catalyst does not play an important role during reaction

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Last Answer : (A) Free energy of activation is lowered in the presence of catalyst, which remains unchanged at the end of reaction