Metal in Vitamin B12 is (A) Copper (B) Cobalt (C) Iron (D) Zinc

Metal in Vitamin B12 is (A) Copper (B) Cobalt (C) Iron (D) Zinc
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Answer : B
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The metal ion present in vitamin B12 is (1) cobalt (2) zinc (3) nickel (4) iron

Description : The metal ion present in vitamin B12 is (1) cobalt (2) zinc (3) nickel (4) iron

Last Answer : (1) cobalt Explanation: The structure of B12 is based on a corrin ring, which is similar to the porphyrin ring found in heme, chlorophyll, and cytochrome. It contains the biochemically rare element cobalt sitting in the center of the ring. Also called cobalamin, it is a water-soluble vitamin.

The metal, which is a constituent of vitamin B12 is - (1) Iron (2) Magnesium (3) Zinc (4) Cobalt

Description : The metal, which is a constituent of vitamin B12 is - (1) Iron (2) Magnesium (3) Zinc (4) Cobalt

Last Answer : (4) Cobalt Explanation: Vitamin B12 is a "generic descriptor for compounds exhibiting the biologic activity of cyanocobalarnin: the antianemia factor of liver extract that contains cobalt, a cyano group ... lead to anemia, as well as nerve and brain damage, which may eventually become irreversible.

The metal, which is a constituent of vitamin B12 is------? A. Iron B. Magnesium C. Zinc D. Cobalt (Answer)

Description : The metal, which is a constituent of vitamin B12 is------? A. Iron B. Magnesium C. Zinc D. Cobalt (Answer)

Last Answer : D. Cobalt (Answer)

The metal ion present in vitamin B12 is : (1) cobalt (2) zinc (3) nickel (4) iron

Description : The metal ion present in vitamin B12 is : (1) cobalt (2) zinc (3) nickel (4) iron

Last Answer : cobalt

The metal, which is a constituent of vitamin B12 is (1) Iron (2) Magnesium (3) Zinc (4) Cobalt

Description : The metal, which is a constituent of vitamin B12 is (1) Iron (2) Magnesium (3) Zinc (4) Cobalt

Last Answer : Cobalt

The central heavy metal cobalt of vitamin B12 is coordinately bound to (A) Cyanide group (B) Amino group (C) Carboxyl group (D) Sulphide group

Description : The central heavy metal cobalt of vitamin B12 is coordinately bound to (A) Cyanide group (B) Amino group (C) Carboxyl group (D) Sulphide group

Last Answer : Answer : A

Metal required for polymerization of insulin is (A) Copper (B) Chromium (C) Cobalt (D) Zinc

Description : Metal required for polymerization of insulin is (A) Copper (B) Chromium (C) Cobalt (D) Zinc

Last Answer : Answer : D

Cobalt is a constituent of (A) Folic acid (B) Vitamin B12 (C) Niacin (D) Biotin

Description : Cobalt is a constituent of (A) Folic acid (B) Vitamin B12 (C) Niacin (D) Biotin

Last Answer : Answer : B

Cobalt is essential component of (A) Vitamin B1 (B) Vitamin B6 (C) Vitamin B12 (D) All of these

Description : Cobalt is essential component of (A) Vitamin B1 (B) Vitamin B6 (C) Vitamin B12 (D) All of these

Last Answer : Answer : C

Cobalt forms an integral part of the vitamin: (A) B1 (B) B6 (C) B12 (D) Folate

Description : Cobalt forms an integral part of the vitamin: (A) B1 (B) B6 (C) B12 (D) Folate

Last Answer : Answer : C

The central structure of B12 referred to as corrin ring system consists of (A) Cobalt (B) Manganese (C) Magnesium (D) Iron

Description : The central structure of B12 referred to as corrin ring system consists of (A) Cobalt (B) Manganese (C) Magnesium (D) Iron

Last Answer : Answer : A

Healing of wounds may be impaired in deficiency of (A) Selenium (B) Copper (C) Zinc (D) Cobalt

Description : Healing of wounds may be impaired in deficiency of (A) Selenium (B) Copper (C) Zinc (D) Cobalt

Last Answer : Answer : C

Metalloenzyme-retinene for polymerization of insulin is (A) Copper (B) Zinc (C) Cobalt (D) Manganese

Description : Metalloenzyme-retinene for polymerization of insulin is (A) Copper (B) Zinc (C) Cobalt (D) Manganese

Last Answer : Answer : B

The trace metal present in insulin is – (1) iron (2) zinc (3) cobalt (4) manganese

Description : The trace metal present in insulin is – (1) iron (2) zinc (3) cobalt (4) manganese

Last Answer : (2) zinc Explanation: Trace elements play important role in Insulin metabolism. The relationship between diabetes, insulin and zinc (Zn) is complex with no clear cause and effect ... and free radicals associated with decreases in intracellular Zn and in Zn dependent antioxidant enzymes.

The trace metal present in insulin is (1) iron (2) zinc (3) cobalt (4) manganese

Description : The trace metal present in insulin is (1) iron (2) zinc (3) cobalt (4) manganese

Last Answer : zinc

A vitamin requires cobalt for its activity. The vitamin is - (1) Vitamin B12 (2) Vitamin D (3) Vitamin B2 (4) Vitamin A

Description : A vitamin requires cobalt for its activity. The vitamin is - (1) Vitamin B12 (2) Vitamin D (3) Vitamin B2 (4) Vitamin A

Last Answer : (1) Vitamin B12 Explanation: Vitamin B12, vitamin B1, or vitamin B12, also called cobalarnin, is a watersoluble vitamin with a key role in the normal functioning of the brain and nervous ... compounds (vitamers), all of which have vitamin activity. It contains the biochemically rare element cobalt.

The presence of Cobalt in Vitamin B12 was established for the first time by – (1) Hydrolysis test (2) Spectroscopy (3) Borax-Bead test (4) Sodium Nitroprusside test

Description : The presence of Cobalt in Vitamin B12 was established for the first time by – (1) Hydrolysis test (2) Spectroscopy (3) Borax-Bead test (4) Sodium Nitroprusside test

Last Answer : (2) Spectroscopy Explanation: Atomic absorption spectroscopy is an analytical chemistry technique used for determining concentration of particular metal element and is widely used in pharmaceutics. It was used for the determination of cobalt in Vitamin B12.

A vitamin requires cobalt for its activity. The vitamin is (1) Vitamin B12 (2) Vitamin D (3) Vitamin B2 (4) Vitamin A

Description : A vitamin requires cobalt for its activity. The vitamin is (1) Vitamin B12 (2) Vitamin D (3) Vitamin B2 (4) Vitamin A

Last Answer : Vitamin B12

The presence of Cobalt in Vitamin B12 was established for the first time by (1) Hydrolysis test (2) Spectroscopy (3) Borax-Bead test (4) Sodium Nitroprusside test

Description : The presence of Cobalt in Vitamin B12 was established for the first time by (1) Hydrolysis test (2) Spectroscopy (3) Borax-Bead test (4) Sodium Nitroprusside test

Last Answer : Spectroscopy

Constituents of stellite are (A) Zinc, copper and nickel (B) Cobalt, chromium and tungsten (C) Zinc, aluminium and nickel (D) Nickel, cobalt and vanadium

Description : Constituents of stellite are (A) Zinc, copper and nickel (B) Cobalt, chromium and tungsten (C) Zinc, aluminium and nickel (D) Nickel, cobalt and vanadium

Last Answer : (B) Cobalt, chromium and tungsten

Constituents of stellite are (A) Zinc, copper & nickel (B) Cobalt, chromium & tungsten (C) Zinc, aluminium & nickel (D) Nickel, cobalt & vanadium

Description : Constituents of stellite are (A) Zinc, copper & nickel (B) Cobalt, chromium & tungsten (C) Zinc, aluminium & nickel (D) Nickel, cobalt & vanadium

Last Answer : (B) Cobalt, chromium & tungsten

Inverter cell anode and cathode of the…………. cell is used for vehicle (a) Copper electrode zinc (b)Zinc copper (c) Aluminium zinc (d)Nickel Cobalt

Description : Inverter cell anode and cathode of the…………. cell is used for vehicle (a) Copper electrode zinc (b)Zinc copper (c) Aluminium zinc (d)Nickel Cobalt

Last Answer : (a) Copper electrode zinc

A hypochromic microcytic anemia with increased iron stores in the bone marrow may be (A) Iron responsive (B) Pyridoxine responsive (C) Vitamin B12 responsive (D) Folate responsive

Description : A hypochromic microcytic anemia with increased iron stores in the bone marrow may be (A) Iron responsive (B) Pyridoxine responsive (C) Vitamin B12 responsive (D) Folate responsive

Last Answer : Answer : B

Chlorophyll contains – (1) Iron (2) Magnesium (3) Cobalt (4) Zinc

Description : Chlorophyll contains – (1) Iron (2) Magnesium (3) Cobalt (4) Zinc

Last Answer : (2) Magnesium Explanation: Chlorophyll molecule contains a magnesium ion. Green plants are dependent on chlorophyll for photosynthesis, and magnesium is required for chlorophyll production.

Chlorophyll contains (1) Iron (2) Magnesium (3) Cobalt (4) Zinc

Description : Chlorophyll contains (1) Iron (2) Magnesium (3) Cobalt (4) Zinc

Last Answer : Magnesium

Selenium decreases the requirement of (A) Copper (B) Zinc (C) Vitamin D (D) Vitamin E

Description : Selenium decreases the requirement of (A) Copper (B) Zinc (C) Vitamin D (D) Vitamin E

Last Answer : Answer : D

Which among the following metal is used for galvanization? (1) Zinc (2) Copper (3) Iron (4) Silver

Description : Which among the following metal is used for galvanization? (1) Zinc (2) Copper (3) Iron (4) Silver

Last Answer : (1) Zinc Explanation: Galvanization is the process of applying a protective zinc coating to steel or iron, to prevent rusting. The most common method is hot-dip galvanizing, in which parts are submerged in a bath of molten zinc.

The most abundant metal in the Earth’s crust is - (1) zinc (2) copper (3) aluminium (4) iron

Description : The most abundant metal in the Earth’s crust is - (1) zinc (2) copper (3) aluminium (4) iron

Last Answer : (3) aluminium Explanation: The most abundant metal on Earth is aluminum. Aluminum is the third most abundant element in the Earth's crust, and makes up 8 percent of it by parts per million. The most abundant element in the Earth's crust is Oxygen followed by Silicon. Both of these are nonmetals.

The metal used in storage batteries- (1) Iron (2) Copper (3) Lead (4) Zinc

Description : The metal used in storage batteries- (1) Iron (2) Copper (3) Lead (4) Zinc

Last Answer : (3) Lead Explanation: Commercially available batteries use a variety of metals and electrolytes. Anodes can be made of zinc, aluminum, lithium, cadmium, iron, metallic lead, lanthanide, or graphite

The metal used to make lightning conductors is – (1) Iron (2) Aluminum (3) Copper (4) Zinc

Description : The metal used to make lightning conductors is – (1) Iron (2) Aluminum (3) Copper (4) Zinc

Last Answer : (3) Copper Explanation: A lightning rod is a metal rod or metallic object mounted on top of a building, electrically bonded using a wire or electrical conductor to interface with ground or "earth" ... wire, instead of passing through the building, where it could start a fire or cause electrocution.

Babbitt metal (used for making bearings) comprises of (A) Mainly tin (85%) and lead (B) Saw dust and iron dust mixture (C) Zinc and aluminium (D) Copper and aluminium

Description : Babbitt metal (used for making bearings) comprises of (A) Mainly tin (85%) and lead (B) Saw dust and iron dust mixture (C) Zinc and aluminium (D) Copper and aluminium

Last Answer : (A) Mainly tin (85%) and lead

_______ being a very light metal is used for making aircraft bodies . a) aluminium b)copper c)zinc d)iron

Description : _______ being a very light metal is used for making aircraft bodies . a) aluminium b)copper c)zinc d)iron

Last Answer : a) aluminium

The metal present in insulin is (1) Copper (2) Iron (3) Zinc (4) Magnesium

Description : The metal present in insulin is (1) Copper (2) Iron (3) Zinc (4) Magnesium

Last Answer : Zinc

The most abundant metal in the Earth’s crust is (1) zinc (2) copper (3) aluminium (4) iron

Description : The most abundant metal in the Earth’s crust is (1) zinc (2) copper (3) aluminium (4) iron

Last Answer : aluminium

Which metal does not undergo corrosion due to the formation of oxide layer? (1) Copper (2) Iron (3) Aluminium (4) Zinc

Description : Which metal does not undergo corrosion due to the formation of oxide layer? (1) Copper (2) Iron (3) Aluminium (4) Zinc

Last Answer : Aluminium

The metal used to make lightning conductors is (1) Iron (2) Aluminium (3) Copper (4) Zinc

Description : The metal used to make lightning conductors is (1) Iron (2) Aluminium (3) Copper (4) Zinc

Last Answer : Copper

The element needed in quantities greater than 100 mg for human beings is (A) Calcium (B) Zinc (C) Selenium (D) Cobalt

Description : The element needed in quantities greater than 100 mg for human beings is (A) Calcium (B) Zinc (C) Selenium (D) Cobalt

Last Answer : Answer : A

Hypogonadism develops due to deficiency of (A) Sulphur (B) Cobalt (C) Zinc (D) Manganese

Description : Hypogonadism develops due to deficiency of (A) Sulphur (B) Cobalt (C) Zinc (D) Manganese

Last Answer : Answer : C

By which prove firstly presence of cobalt in B12.

Description : By which prove firstly presence of cobalt in B12.

Last Answer : Sodium nitroperoxide tes

Haemoglobin formation needs both (A) Iron and Zinc (B) Iron and Calcium (C) Iron and Copper (D) Iron and Magnesium

Description : Haemoglobin formation needs both (A) Iron and Zinc (B) Iron and Calcium (C) Iron and Copper (D) Iron and Magnesium

Last Answer : Answer : C

Meat is rich in all of the following except (A) Iron (B) Fluorine (C) Copper (D) Zinc

Description : Meat is rich in all of the following except (A) Iron (B) Fluorine (C) Copper (D) Zinc

Last Answer : Answer : B

Which metal is important component of vitamin B12

Description : Which metal is important component of vitamin B12

Last Answer : Cobalt

In vitamin B12 which metal ion present

Description : In vitamin B12 which metal ion present

Last Answer : Cobalt

Vitamin E reduces the requirement of (A) Iron (B) Zinc (C) Selenium (D) Magnesium

Description : Vitamin E reduces the requirement of (A) Iron (B) Zinc (C) Selenium (D) Magnesium

Last Answer : Answer : C

Which of the following metals is used in the electromagnets? (a) Soft iron (b) Stainless steel (c) Cobalt (d) Copper

Description : Which of the following metals is used in the electromagnets? (a) Soft iron (b) Stainless steel (c) Cobalt (d) Copper

Last Answer : Ans:(a)

Which of the following imparts a blue colour to glass? (1) Cobalt oxide (2) Copper oxide (3) Iron oxide (4) Nickel oxide

Description : Which of the following imparts a blue colour to glass? (1) Cobalt oxide (2) Copper oxide (3) Iron oxide (4) Nickel oxide

Last Answer : (1) Cobalt oxide Explanation: The addition of oxides, sulfides, salts, and other compounds of different metals to molten glass at the time of manufacture adds colour to glass. The introduction of ... colour; copper oxide: turquoise; chromium: dark green to black; cadmium sulfide: deep yellow, etc.

Re. the vegan diet, how do the animals we eat end up giving us Vitamin B12, Omega 3, Iron etc.

Description : Re. the vegan diet, how do the animals we eat end up giving us Vitamin B12, Omega 3, Iron etc.

Last Answer : answer:Long, snarky If cows get fiber from the grass where does the grass get its fiber if it’s just sucking up raw nutrients from the ground? If grass can be healthy by creating its own food through photosynthesis why don’t cows? Short We’re not cows. We have different nutritional requirements.

Serum ferritin is a maker of Options: 1) Circulating Iron 2) Storage iron 3) Folate 4) Vitamin B12 Levels

Description : Serum ferritin is a maker of Options: 1) Circulating Iron 2) Storage iron 3) Folate 4) Vitamin B12 Levels

Last Answer : Correct Answer: 2) Storage iron

Calcium absorption is inferred by (A) Fatty acids (B) Amino acids (C) Vitamin D (D) Vitamin B12

Description : Calcium absorption is inferred by (A) Fatty acids (B) Amino acids (C) Vitamin D (D) Vitamin B12

Last Answer : Answer : A

A hypochromic microcytic anaemia which increases Fe, store in the bone marrow may be (A) Folic acid responsive (B) Vitamin B12 responsive (C) Pyridoxine responsive (D) Vitamin C responsive

Description : A hypochromic microcytic anaemia which increases Fe, store in the bone marrow may be (A) Folic acid responsive (B) Vitamin B12 responsive (C) Pyridoxine responsive (D) Vitamin C responsive

Last Answer : Answer : D