Cholesterol is a precursor in the biogenesis of (A) Vitamin A (B) Vitamin D (C) Vitamin E (D) None of these

Cholesterol is a precursor in the biogenesis of (A) Vitamin A (B) Vitamin D (C) Vitamin E (D) None of these
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Cholesterol is a precursor in the biogenesis of (A) Vitamin A (B) Vitamin D (C) Vitamin E (D) None of these

Description : Cholesterol is a precursor in the biogenesis of (A) Vitamin A (B) Vitamin D (C) Vitamin E (D) None of these

Last Answer : Answer : B

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

Precursor of ACTH is (A) Cholesterol (B) Pregnenolone (C) Corticotropin (D) Pro-opiomelanocortin

Description : Precursor of ACTH is (A) Cholesterol (B) Pregnenolone (C) Corticotropin (D) Pro-opiomelanocortin

Last Answer : Answer : D

Cholesterol is the precursor for the biosynthesis of (A) fatty acid (B) prostaglandins (C) bile acids (D) sphingmyelin

Description : Cholesterol is the precursor for the biosynthesis of (A) fatty acid (B) prostaglandins (C) bile acids (D) sphingmyelin

Last Answer : Answer : C

Zymogen is a (A) Vitamin (B) Enzyme precursor (C) Modulator (D) Hormone

Description : Zymogen is a (A) Vitamin (B) Enzyme precursor (C) Modulator (D) Hormone

Last Answer : Answer : B

Precursor of Vitamin A is (A) α-Carotene (B) β-Carotene (C) γ-Carotene (D) All of these VITAMINS 121

Description : Precursor of Vitamin A is (A) α-Carotene (B) β-Carotene (C) γ-Carotene (D) All of these VITAMINS 121

Last Answer : Answer : D

β-Carotene, precursor of vitamin A, is oxidatively cleaved by (A) β-Carotene dioxygenase (B) Oxygenase (C) Hydroxylase (D) Transferase

Description : β-Carotene, precursor of vitamin A, is oxidatively cleaved by (A) β-Carotene dioxygenase (B) Oxygenase (C) Hydroxylase (D) Transferase

Last Answer : Answer : A

Phenylalanine, ornithine and methionine are involved in the biogenesis of (A) Lysergic acid (B) Reserpine (C) L-Hyoscyamine (D) Papaverine

Description : Phenylalanine, ornithine and methionine are involved in the biogenesis of (A) Lysergic acid (B) Reserpine (C) L-Hyoscyamine (D) Papaverine

Last Answer : Answer : A

β-Carotene, precursor of vitamin A, is oxidatively cleaved by (A) β-Carotene dioxygenase (B) Oxygenase \ (C) Hydroxylase (D) Transferase

Description : β-Carotene, precursor of vitamin A, is oxidatively cleaved by (A) β-Carotene dioxygenase (B) Oxygenase \ (C) Hydroxylase (D) Transferase

Last Answer : (A) β-Carotene dioxygenase

$ That branch of biology which deals with the study of origin of life is called biopoiesis. ! Biogenesis the process of origin of life from the pre-ex

Description : $ That branch of biology which deals with the study of origin of life is called biopoiesis. ! Biogenesis the process of origin of life from the pre-ex

Last Answer : $ That branch of biology which deals with the study of origin of life is called biopoiesis. ! Biogenesis the ... wrong D. If both As and R are wrong.

Who proposed the theory of Biogenesis?

Description : Who proposed the theory of Biogenesis?

Last Answer : Louis Pasteur

Give Scientific concepts of origin of life? OR Describe Abiogenesis and Biogenesis.

Description : Give Scientific concepts of origin of life? OR Describe Abiogenesis and Biogenesis.

Last Answer : In ancient days, living things were believed to originate in two ways: 1-Biogenesis: This was common observation that living things are produced from their parents. 2-Abiogenesis: This hypothesis ... produced from mud, mice from debris, insects from dew drops and maggots from putrefied meat. 

Linnaeus is credited with (a) binomial nomenclature (b) theory of biogenesis (c) discovery of microscope (d) discovery of blood circulation.

Description : Linnaeus is credited with (a) binomial nomenclature (b) theory of biogenesis (c) discovery of microscope (d) discovery of blood circulation.

Last Answer : (c) discovery of microscope

Requirement of vitamin E increases with the increasing intake of (A) Calories (B) Proteins (C) PUFA (D) Cholesterol

Description : Requirement of vitamin E increases with the increasing intake of (A) Calories (B) Proteins (C) PUFA (D) Cholesterol

Last Answer : Answer : C

Deterioration of food (rancidity) is due to presence of (A) Cholesterol (B) Vitamin E (C) Peroxidation of lipids (D) Phenolic compounds

Description : Deterioration of food (rancidity) is due to presence of (A) Cholesterol (B) Vitamin E (C) Peroxidation of lipids (D) Phenolic compounds

Last Answer : Answer : C

The mechanism of synthesis of DNA and RNA are similar to all the following ways except (A) They involve release of pyrophosphate from each nucleotide added (B) They require activated nucleotide precursor and Mg2+ (C) The direction of synthesis is (D) They require a primer

Description : The mechanism of synthesis of DNA and RNA are similar to all the following ways except (A) They involve release of pyrophosphate from each nucleotide added (B) They require activated nucleotide precursor and Mg2+ (C) The direction of synthesis is (D) They require a primer

Last Answer : Answer : D

Insoinic acid is the biological precursor of (A) Cytosine and Uric acid (B) Adenylve acid and Glucine floc acid (C) Orotic acid and Uridylic acid (D) Adenosine acid Thymidine

Description : Insoinic acid is the biological precursor of (A) Cytosine and Uric acid (B) Adenylve acid and Glucine floc acid (C) Orotic acid and Uridylic acid (D) Adenosine acid Thymidine

Last Answer : Answer : B

The mechanism of synthesis of DNA and RNA are similar in all the following ways except (A) They involve release of pyrophosphate from each nucleotide added (B) They require activated nucleotide precursor and Mg2+ (C) The direction of synthesis is 5’ → 3’ (D) They require a primer

Description : The mechanism of synthesis of DNA and RNA are similar in all the following ways except (A) They involve release of pyrophosphate from each nucleotide added (B) They require activated nucleotide precursor and Mg2+ (C) The direction of synthesis is 5’ → 3’ (D) They require a primer

Last Answer : Answer : A

All of the following statements about tRNA are true except (A) It is synthesized as a large precursor (B) It is processed in the nucelolus (C) It has no codons or anticodons (D) Genes for rRNA are present in single copies

Description : All of the following statements about tRNA are true except (A) It is synthesized as a large precursor (B) It is processed in the nucelolus (C) It has no codons or anticodons (D) Genes for rRNA are present in single copies

Last Answer : Answer : D

Heterogeneous nuclear RNA is the precursor of (A) mRNA (B) rRNA (C) tRNA (D) None of these

Description : Heterogeneous nuclear RNA is the precursor of (A) mRNA (B) rRNA (C) tRNA (D) None of these

Last Answer : Answer : A

Pyrimidine and purine nucleoside biosynthesis share a common precursor: (A) PRPP (B) Glycine (C) Fumarate (D) Alanine

Description : Pyrimidine and purine nucleoside biosynthesis share a common precursor: (A) PRPP (B) Glycine (C) Fumarate (D) Alanine

Last Answer : Answer : A

All the following statements about βendorphin are true except µ : (A) It is a polypeptide (B) Its precursor is pro-opio-melanocortin (C) Its receptors are represent in brain (D) Its action is blocked by morphine

Description : All the following statements about βendorphin are true except µ : (A) It is a polypeptide (B) Its precursor is pro-opio-melanocortin (C) Its receptors are represent in brain (D) Its action is blocked by morphine

Last Answer : Answer : D

Immediate precursor of epinephrine is (A) Metanephrine (B) Norepinephrine (C) Dopa (D) Dopamine

Description : Immediate precursor of epinephrine is (A) Metanephrine (B) Norepinephrine (C) Dopa (D) Dopamine

Last Answer : Answer : B

All the following statements about proopiomelanocortin are true except (A) It is made up of 285 amino acids (B) It is synthesised in pars intermedia and anterior lobe of pituitary gland (C) It is the precursor of ACTH and melatonin (D) It is the precursor of corticotropin like intermediate lobe peptide and endorphins 218 MCQs IN BIOCHEMISTRY

Description : All the following statements about proopiomelanocortin are true except (A) It is made up of 285 amino acids (B) It is synthesised in pars intermedia and anterior lobe of pituitary gland ... ) It is the precursor of corticotropin like intermediate lobe peptide and endorphins 218 MCQs IN BIOCHEMISTRY

Last Answer : Answer : C

The precursor of testosterone is (A) Aldosterone (B) Methyl testosterone (C) Estrone (D) Pregnenolone

Description : The precursor of testosterone is (A) Aldosterone (B) Methyl testosterone (C) Estrone (D) Pregnenolone

Last Answer : Answer : D

The common precursor in the biosynthesis of triacylglycerol and phospholipids is (A) 1, 2-Diacylglycerol phosphate (B) 1-Acylglycerol 3-phosphate (C) Glycerol 3-phosphate (D) Dihydroxyacetone phosphate

Description : The common precursor in the biosynthesis of triacylglycerol and phospholipids is (A) 1, 2-Diacylglycerol phosphate (B) 1-Acylglycerol 3-phosphate (C) Glycerol 3-phosphate (D) Dihydroxyacetone phosphate

Last Answer : Answer : A

In the pathway leading to biosynthesis of acetoacetate from acetyl-CoA in liver, the immediate precursor of aceotacetate is (A) Acetoacetyl-CoA (B) 3-Hydroxybutyryl-CoA (C) 3-Hydroxy-3-methyl-glutaryl-CoA (D) 3-Hydroxybutyrate

Description : In the pathway leading to biosynthesis of acetoacetate from acetyl-CoA in liver, the immediate precursor of aceotacetate is (A) Acetoacetyl-CoA (B) 3-Hydroxybutyryl-CoA (C) 3-Hydroxy-3-methyl-glutaryl-CoA (D) 3-Hydroxybutyrate

Last Answer : Answer : A

Which of the following intermediates of metabolism can be both a precursor and a product of glucose? (A) Lactate (B) Pyruvate (C) Alanine (D) Acetyl-CoA

Description : Which of the following intermediates of metabolism can be both a precursor and a product of glucose? (A) Lactate (B) Pyruvate (C) Alanine (D) Acetyl-CoA

Last Answer : Answer : A

The precursor of CoA is (A) Riboflavin (B) Pyridoxamine (C) Thiamin (D) Pantothenate

Description : The precursor of CoA is (A) Riboflavin (B) Pyridoxamine (C) Thiamin (D) Pantothenate

Last Answer : Answer : D

All the following statements about angiotensin are true except (A) Its precursor is an α2-globulin (B) Its active form is an octapeptide (C) It is a vasodilator (D) It increases the secretion of aldosterone

Description : All the following statements about angiotensin are true except (A) Its precursor is an α2-globulin (B) Its active form is an octapeptide (C) It is a vasodilator (D) It increases the secretion of aldosterone

Last Answer : Answer : C

All the following statements about pepsin are correct except (A) It is smaller than pepsinogen (B) It is formed by the action of HCl on its precursor (C) Its optimum pH is 1.0–2.0 (D) It hydrolyses the C-terminal and N-terminal peptide bonds of proteins

Description : All the following statements about pepsin are correct except (A) It is smaller than pepsinogen (B) It is formed by the action of HCl on its precursor (C) Its optimum pH is 1.0–2.0 (D) It hydrolyses the C-terminal and N-terminal peptide bonds of proteins

Last Answer : Answer : D

Tryptophan could be considered as precursor of (A) Melanotonin (B) Thyroid hormones (C) Melanin (D) Epinephrine

Description : Tryptophan could be considered as precursor of (A) Melanotonin (B) Thyroid hormones (C) Melanin (D) Epinephrine

Last Answer : Answer : A

In mammalian tissues serine can be a biosynthetic precursor of (A) Methionine (B) Glycine (C) Tryptophan (D) Phenylalanine

Description : In mammalian tissues serine can be a biosynthetic precursor of (A) Methionine (B) Glycine (C) Tryptophan (D) Phenylalanine

Last Answer : Answer : B

Phenylalanine is the precursor of (A) L-DOPA (B) Histamine (C) Tyrosine (D) Throxine

Description : Phenylalanine is the precursor of (A) L-DOPA (B) Histamine (C) Tyrosine (D) Throxine

Last Answer : C

What is the precursor of leukotrienes?

Description : What is the precursor of leukotrienes?

Last Answer : They are produced from arachidonic acid.

Muscle glycogen will not serve as a precursor of blood sugar, why?

Description : Muscle glycogen will not serve as a precursor of blood sugar, why?

Last Answer : Glucose-6-phosphatase is absent in muscle.

Steroid hormones are synthesized from (A) Adenine (B) Protein (C) Vitamin (D) Cholesterol

Description : Steroid hormones are synthesized from (A) Adenine (B) Protein (C) Vitamin (D) Cholesterol

Last Answer : Answer : D

Vitamin C is required for the synthesis of (A) Bile acids from cholesterol (B) Bile salts from bile acids (C) Vitamin D from cholesterol (D) All of these

Description : Vitamin C is required for the synthesis of (A) Bile acids from cholesterol (B) Bile salts from bile acids (C) Vitamin D from cholesterol (D) All of these

Last Answer : Answer : A

Cholesterol, bile salts, vitamin D and sex hormones are (A) Mucolipids (B) Glycolipids (C) Phospholipids (D) Isoprenoid lipids

Description : Cholesterol, bile salts, vitamin D and sex hormones are (A) Mucolipids (B) Glycolipids (C) Phospholipids (D) Isoprenoid lipids

Last Answer : Answer : D

A diet containing this fat is helpful in lowering the blood cholesterol level. (A) Unsaturated (B) Saturated (C) Vitamin enriched (D) Refined

Description : A diet containing this fat is helpful in lowering the blood cholesterol level. (A) Unsaturated (B) Saturated (C) Vitamin enriched (D) Refined

Last Answer : Answer : A

Lieberman-Burchard reaction is performed to detect (A) Cholesterol (B) Glycerol (C) Fatty acid (D) Vitamin D

Description : Lieberman-Burchard reaction is performed to detect (A) Cholesterol (B) Glycerol (C) Fatty acid (D) Vitamin D

Last Answer : Answer : A

Salkowski test is performed to detect (A) Glycerol (B) Cholesterol (C) Fatty acids (D) Vitamin D

Description : Salkowski test is performed to detect (A) Glycerol (B) Cholesterol (C) Fatty acids (D) Vitamin D

Last Answer : Answer : B

Who remembers the precursor to video games, choose your own adventure novels?

Description : Who remembers the precursor to video games, choose your own adventure novels?

Last Answer : I totally remember those. I thought it was amazing when goosebumps did em. Love the memories

What is the meaning of the word Precursor ?

Description : What is the meaning of the word Precursor ?

Last Answer : forerunner , forerunner, etc.

Carbon skeleton produced during respiration. (Eg. `alpha`-ketoglutarate, OAA etc. intermediates) are used as precursor for biosynthesis of other molec

Description : Carbon skeleton produced during respiration. (Eg. `alpha`-ketoglutarate, OAA etc. intermediates) are used as precursor for biosynthesis of other molec

Last Answer : Carbon skeleton produced during respiration. (Eg. `alpha`-ketoglutarate, OAA etc. intermediates) are ... biosynthesis of other molecules in the cell.

Carbon skeleton produced during respiration. (Eg. `alpha`-ketoglutarate, OAA etc. intermediates) are used as precursor for biosynthesis of other molec

Description : Carbon skeleton produced during respiration. (Eg. `alpha`-ketoglutarate, OAA etc. intermediates) are used as precursor for biosynthesis of other molec

Last Answer : Carbon skeleton produced during respiration. (Eg. `alpha`-ketoglutarate, OAA etc. intermediates) are ... biosynthesis of other molecules in the cell.

Which of the following technique is used to measure the hormones, their precursor, and their metabolic and products quantitatively in the living body

Description : Which of the following technique is used to measure the hormones, their precursor, and their metabolic and products quantitatively in the living body

Last Answer : Which of the following technique is used to measure the hormones, their precursor, and their ... Chromatography C. Oscilloscope D. None of these

Consider the following statements: (1) Copper is present in cytochrome oxidane (2) Pantothenic acid is precursor of co-enzyme-A (3) Thiamine prohosphate is the prosthetic group in decarboxylases (4) Zinc is present in RNA and DNA polymerases

Description : Consider the following statements: (1) Copper is present in cytochrome oxidane (2) Pantothenic acid is precursor of co-enzyme-A (3) Thiamine prohosphate is the prosthetic group in decarboxylases (4) Zinc is present in RNA and DNA polymerases

Last Answer : Ans. ((b))

Which of the following is/are true concerning wound fibroblasts? A. Fibroblasts synthesize and secrete collagen molecules. B. Wound fibroblasts are derived from blood-borne precursor cells. C. Fibroblasts migrate to a wound along fibrin strands, which are used as a scaffold. D. Large amounts of fibrin or blood clot can act as a physical barrier to fibroblast penetration, which delays normal wound healing.

Description : Which of the following is/are true concerning wound fibroblasts? A. Fibroblasts synthesize and secrete collagen molecules. B. Wound fibroblasts are derived from blood-borne precursor cells. C. ... clot can act as a physical barrier to fibroblast penetration, which delays normal wound healing.

Last Answer : Answer: ACD DISCUSSION: Fibroblasts appear in the wound on about the third day of healing and begin to synthesize and secrete collagen molecules. Wound fibroblasts arrive from cells surrounding ... enzymes, and large amounts of fibrin and blood clot prevent fibroblasts from entering the wound

(3) prevents freezing of petrol Explanation: Ethylene glycol (IUPAC name: ethane-1,2-diol) is an organic compound widely used as an automotive antifreeze and a precursor to polymers. In its pure form, it is an odorless, colourless, syrupy, sweettasting liquid. Ethylene glycol is toxic, and ingestion can result in death. Due to its low freezing point ethylene glycol resists freezing. A mixture of 60% ethylene glycol and 40% water freezes at -45 degree C (- 49 degree F).

Description : (3) prevents freezing of petrol Explanation: Ethylene glycol (IUPAC name: ethane-1,2-diol) is an organic compound widely used as an automotive antifreeze and a precursor to polymers. In its pure form, it is ... A mixture of 60% ethylene glycol and 40% water freezes at -45 degree C (- 49 degree F).

Last Answer : Rust is - (1) A mixture of Fe₂O₃ and Fe(OH) ₂ (2) A mixture of FeO and Fe(OH)₂ (3) FeO only (4) A mixture of Fe₂O₃, 3H₂O and FeO