Adrenalin is synthesized from (A) Adenine (B) Adenosine (C) Tyrosine (D) Tryptophan 230 MCQs IN BIOCHEMISTRY

Adrenalin is synthesized from (A) Adenine (B) Adenosine (C) Tyrosine (D) Tryptophan 230 MCQs IN BIOCHEMISTRY
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Tyrosine is required for the synthesis of all of the following except (A) Melatonin (B) Epinephrine (C) Norepinephrine (D) Thyroxine 222 MCQs IN BIOCHEMISTRY

Description : Tyrosine is required for the synthesis of all of the following except (A) Melatonin (B) Epinephrine (C) Norepinephrine (D) Thyroxine 222 MCQs IN BIOCHEMISTRY

Last Answer : Answer : A

Niacin is synthesized in the body from (A) Tryptophan (B) Tyrosine (C) Glutamate (D) Aspartate

Description : Niacin is synthesized in the body from (A) Tryptophan (B) Tyrosine (C) Glutamate (D) Aspartate

Last Answer : Answer : A

Niacin is synthesized in the body from (A) Tryptophan (B) Tyrosine (C) Glutamate (D) Aspartate

Description : Niacin is synthesized in the body from (A) Tryptophan (B) Tyrosine (C) Glutamate (D) Aspartate

Last Answer : (A) Tryptophan

TSH hormone biochemically is a (A) Protein (B) Fat (C) Glycoprotein (D) Carbohydrate 232 MCQs IN BIOCHEMISTRY

Description : TSH hormone biochemically is a (A) Protein (B) Fat (C) Glycoprotein (D) Carbohydrate 232 MCQs IN BIOCHEMISTRY

Last Answer : Answer : C

Whcih of the following hormone is a peptide of less than ten amino acids? (A) Insulin (B) Growth hormone (C) Oxytocin (D) Parathyroid hormone 228 MCQs IN BIOCHEMISTRY

Description : Whcih of the following hormone is a peptide of less than ten amino acids? (A) Insulin (B) Growth hormone (C) Oxytocin (D) Parathyroid hormone 228 MCQs IN BIOCHEMISTRY

Last Answer : Answer : C

Phosphorylated IRS-1 activates GRB-2 which is (A) G-protein receptor binding protein-2 (B) Growth factor receptor binding protein-2 (C) Growth hormone receptor binding protein-2 (D) Glucocorticoid receptor binding protein-2 226 MCQs IN BIOCHEMISTRY

Description : Phosphorylated IRS-1 activates GRB-2 which is (A) G-protein receptor binding protein-2 (B) Growth factor receptor binding protein-2 (C) Growth hormone receptor binding protein-2 (D) Glucocorticoid receptor binding protein-2 226 MCQs IN BIOCHEMISTRY

Last Answer : Answer : B

Mineralocorticoids increase the tubular reabsorption of (A) Sodium and calcium (B) Sodium and potassium (C) Sodium and chloride (D) Potassium and chloride 224 MCQs IN BIOCHEMISTRY

Description : Mineralocorticoids increase the tubular reabsorption of (A) Sodium and calcium (B) Sodium and potassium (C) Sodium and chloride (D) Potassium and chloride 224 MCQs IN BIOCHEMISTRY

Last Answer : Answer : C

Secretion of thyroid hormones is regulated by (A) Hypothalamus (B) Anterior pituitary (C) Feedback regulation (D) All of these 220 MCQs IN BIOCHEMISTRY

Description : Secretion of thyroid hormones is regulated by (A) Hypothalamus (B) Anterior pituitary (C) Feedback regulation (D) All of these 220 MCQs IN BIOCHEMISTRY

Last Answer : Answer : D

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

Cyclic AMP acts as the second messenger for all of the following except (A) Oxytocin (B) TSH (C) ACTH (D) FSH 216 MCQs IN BIOCHEMISTRY

Description : Cyclic AMP acts as the second messenger for all of the following except (A) Oxytocin (B) TSH (C) ACTH (D) FSH 216 MCQs IN BIOCHEMISTRY

Last Answer : Answer : A

Normal serum free testosterone in adult men varies between (A) 1–5 ng/dl (B) 6–9 ng/dl (C) 10–30 ng/dl (D) 50–100 ng/dl 214 MCQs IN BIOCHEMISTRY

Description : Normal serum free testosterone in adult men varies between (A) 1–5 ng/dl (B) 6–9 ng/dl (C) 10–30 ng/dl (D) 50–100 ng/dl 214 MCQs IN BIOCHEMISTRY

Last Answer : Answer : C

Calcitonin causes (A) Calcinuria and phosphaturia (B) Decrease in urinary calcium (C) Decrease in urinary phosphorous (D) Increase in blood calcium level 212 MCQs IN BIOCHEMISTRY

Description : Calcitonin causes (A) Calcinuria and phosphaturia (B) Decrease in urinary calcium (C) Decrease in urinary phosphorous (D) Increase in blood calcium level 212 MCQs IN BIOCHEMISTRY

Last Answer : Answer : A

ADH (A) Reabsorbs water from renal tubules (B) Excretes water from renal tubules (C) Excretes hypotonic urine (D) Causes low specific gravity of urine 210 MCQs IN BIOCHEMISTRY

Description : ADH (A) Reabsorbs water from renal tubules (B) Excretes water from renal tubules (C) Excretes hypotonic urine (D) Causes low specific gravity of urine 210 MCQs IN BIOCHEMISTRY

Last Answer : Answer : A

Adrenocorticotropic hormone (ACTH) is a single polypeptide containing (A) 25 amino acid (B) 39 amino acid (C) 49 amino acid (D) 52 amino acid 208 MCQs IN BIOCHEMISTRY

Description : Adrenocorticotropic hormone (ACTH) is a single polypeptide containing (A) 25 amino acid (B) 39 amino acid (C) 49 amino acid (D) 52 amino acid 208 MCQs IN BIOCHEMISTRY

Last Answer : Answer : B

Adenosine kinase can salvage (A) Adenosine (B) Adenosine and deoxyadenosine (C) Adenosine and guanosine (D) Adenine and adenosine

Description : Adenosine kinase can salvage (A) Adenosine (B) Adenosine and deoxyadenosine (C) Adenosine and guanosine (D) Adenine and adenosine

Last Answer : Answer : B

Deoxycytidine kinase can salvage (A) Adenosine (B) Adenosine and deoxyadenosine (C) Adenosine and guanosine (D) Adenine and adenosine

Description : Deoxycytidine kinase can salvage (A) Adenosine (B) Adenosine and deoxyadenosine (C) Adenosine and guanosine (D) Adenine and adenosine

Last Answer : Answer : D

Lesch-Nyhan syndrome, the sex linked recessive disorder is due to the lack of the enzyme: (A) Hypoxanthine-guanine phosphoribosyl transferse (B) Xanthine oxidase (C) Adenine phosphoribosyl transferase (D) Adenosine deaminase

Description : Lesch-Nyhan syndrome, the sex linked recessive disorder is due to the lack of the enzyme: (A) Hypoxanthine-guanine phosphoribosyl transferse (B) Xanthine oxidase (C) Adenine phosphoribosyl transferase (D) Adenosine deaminase

Last Answer : Answer : A

Homogentisic acid is formed from (A) Homoserine (B) Homocysteine (C) Tyrosine (D) Tryptophan

Description : Homogentisic acid is formed from (A) Homoserine (B) Homocysteine (C) Tyrosine (D) Tryptophan

Last Answer : Answer : C

An amino acid used for the synthesis of thyroid hormone is (A) Tyrosine (B) Tryptophan (C) Histidine (D) Proline

Description : An amino acid used for the synthesis of thyroid hormone is (A) Tyrosine (B) Tryptophan (C) Histidine (D) Proline

Last Answer : Answer : A

Melatonin is synthesised from (A) Phenylalanine (B) Tyrosine (C) Tryptophan (D) None of these

Description : Melatonin is synthesised from (A) Phenylalanine (B) Tyrosine (C) Tryptophan (D) None of these

Last Answer : Answer : C

The biosynthesis of both Catecholamine and serotonin require (A) Tyrosine hydroxylase (B) N-methyl transferase (C) Aromatic amino acid decarboxylase (D) Tryptophan pyrrolase

Description : The biosynthesis of both Catecholamine and serotonin require (A) Tyrosine hydroxylase (B) N-methyl transferase (C) Aromatic amino acid decarboxylase (D) Tryptophan pyrrolase

Last Answer : Answer : B

Niacin can be synthesised in human beings from (A) Histidine (B) Phenylalanine (C) Tyrosine (D) Tryptophan

Description : Niacin can be synthesised in human beings from (A) Histidine (B) Phenylalanine (C) Tyrosine (D) Tryptophan

Last Answer : Answer : D

The proteins present in maize are deficient in (A) Lysine (B) Threonine (C) Tryptophan (D) Tyrosine

Description : The proteins present in maize are deficient in (A) Lysine (B) Threonine (C) Tryptophan (D) Tyrosine

Last Answer : Answer : C

An amino acid that does not form an αhelix is (A) Asparagine (B) Tyrosine (C) Tryptophan (D) Proline

Description : An amino acid that does not form an αhelix is (A) Asparagine (B) Tyrosine (C) Tryptophan (D) Proline

Last Answer : Answer : D

Side chains of all following amino acids contain aromatic rings except (A) Phenyl alanine (B) Alanine (C) Tyrosine (D) Tryptophan

Description : Side chains of all following amino acids contain aromatic rings except (A) Phenyl alanine (B) Alanine (C) Tyrosine (D) Tryptophan

Last Answer : Answer : B

The sparing action of methionine is (A) Tyrosine (B) Cystine (C) Arginine (D) Tryptophan

Description : The sparing action of methionine is (A) Tyrosine (B) Cystine (C) Arginine (D) Tryptophan

Last Answer : Answer : B

Side chains of all amino acids contain aromatic rings except (A) Pheynl alanine (B) Alanine (C) Tyrosine (D) Tryptophan

Description : Side chains of all amino acids contain aromatic rings except (A) Pheynl alanine (B) Alanine (C) Tyrosine (D) Tryptophan

Last Answer : Answer : B

Xanthuric acid is an abnormal metabolite of (A) Xanthine (B) Uric acid (C) Tyrosine (D) Tryptophan

Description : Xanthuric acid is an abnormal metabolite of (A) Xanthine (B) Uric acid (C) Tyrosine (D) Tryptophan

Last Answer : Answer : D

Hopkins-Cole test is for identification of (A) Tyrosine (B) Tryptophan (C) Arginine (D) Cysteine

Description : Hopkins-Cole test is for identification of (A) Tyrosine (B) Tryptophan (C) Arginine (D) Cysteine

Last Answer : Answer : B

Millon’s test is for identification of (A) Tyrosine (B) Tryptophan (C) Proline (D) Arginine

Description : Millon’s test is for identification of (A) Tyrosine (B) Tryptophan (C) Proline (D) Arginine

Last Answer : Answer : A

The amino acid which gives yellow colour with Ninhydrin in paper chromatography is (A) Tyrosine (B) Proline (C) Tryptophan (D) Alanine

Description : The amino acid which gives yellow colour with Ninhydrin in paper chromatography is (A) Tyrosine (B) Proline (C) Tryptophan (D) Alanine

Last Answer : Answer : B

Branched chain amino acids are (A) Cysteine and cystine (B) Tyrosine and Tryptophan (C) Glycine and Serine (D) Valine, Leucine and Isoleucine

Description : Branched chain amino acids are (A) Cysteine and cystine (B) Tyrosine and Tryptophan (C) Glycine and Serine (D) Valine, Leucine and Isoleucine

Last Answer : Answer : D

Which among the following is a nutritionally essential amino acid for man ? (A) Alanine (B) Glycine (C) Tyrosine (D) Tryptophan

Description : Which among the following is a nutritionally essential amino acid for man ? (A) Alanine (B) Glycine (C) Tyrosine (D) Tryptophan

Last Answer : Answer : D

Serotonin is synthesised from (A) Serine (B) Phenylalanine (C) Tyrosine (D) Tryptophan

Description : Serotonin is synthesised from (A) Serine (B) Phenylalanine (C) Tyrosine (D) Tryptophan

Last Answer : Answer : D

An amino acid that does not take part in α helix formation is (A) Histidine (B) Tyrosine (C) Proline (D) Tryptophan

Description : An amino acid that does not take part in α helix formation is (A) Histidine (B) Tyrosine (C) Proline (D) Tryptophan

Last Answer : Answer : C

The limiting amino acid of rice is (A) Lysine (B) Tryptophan (C) Phenylalanine (D) Tyrosine

Description : The limiting amino acid of rice is (A) Lysine (B) Tryptophan (C) Phenylalanine (D) Tyrosine

Last Answer : Answer : A

Million-Nasse’s reaction is specific for the amino acid: (A) Tryptophan (B) Tyrosine (C) Phenylalanine (D) Arginine

Description : Million-Nasse’s reaction is specific for the amino acid: (A) Tryptophan (B) Tyrosine (C) Phenylalanine (D) Arginine

Last Answer : Answer : B

An amino acid that does not form an αhelix is (A) Valine (B) Proline (C) Tyrosine (D) Tryptophan

Description : An amino acid that does not form an αhelix is (A) Valine (B) Proline (C) Tyrosine (D) Tryptophan

Last Answer : Answer : B

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

Thyroid hormones are synthesized by the iodination of the amino acid: (A) Glycine (B) Phenylalanine (C) Alanine (D) Tyrosine

Description : Thyroid hormones are synthesized by the iodination of the amino acid: (A) Glycine (B) Phenylalanine (C) Alanine (D) Tyrosine

Last Answer : Answer : D

.Khorana first deciphered the triplet codons of (a) serine and isoleucine (b) cysteine and valine (c) tyrosine and tryptophan (d) phenylalanine and methinonine.

Description : .Khorana first deciphered the triplet codons of (a) serine and isoleucine (b) cysteine and valine (c) tyrosine and tryptophan (d) phenylalanine and methinonine.

Last Answer : (a) serine and isoleucine

Khorana first deciphered the triplet codons of (a) serine and isoleucine (b) cysteine and valine (c) tyrosine and tryptophan (d) phenylalanine and methinonine

Description : Khorana first deciphered the triplet codons of (a) serine and isoleucine (b) cysteine and valine (c) tyrosine and tryptophan (d) phenylalanine and methinonine

Last Answer : (b) cysteine and valine

Hormones thyroxine, adrenaline and the pigment melanin are formed from (a) tyrosine (b) proline (c) tryptophan (d) glycine.

Description : Hormones thyroxine, adrenaline and the pigment melanin are formed from (a) tyrosine (b) proline (c) tryptophan (d) glycine.

Last Answer : (a) tyrosine

Niacin can be synthesised in human beings from (A) Histidine (B) Phenylalanine (C) Tyrosine (D) Tryptophan

Description : Niacin can be synthesised in human beings from (A) Histidine (B) Phenylalanine (C) Tyrosine (D) Tryptophan

Last Answer : (D) Tryptophan

Iodine is required in human body for (A) Formation of thyroxine (B) Formation of Glutathione (C) Formation of potassium iodide (D) Adrenalin

Description : Iodine is required in human body for (A) Formation of thyroxine (B) Formation of Glutathione (C) Formation of potassium iodide (D) Adrenalin

Last Answer : Answer : A

Which of the following is an emergency hormone in humans? (1) Thyroxine (2) Insulin (3) Adrenalin (4) Progestrone

Description : Which of the following is an emergency hormone in humans? (1) Thyroxine (2) Insulin (3) Adrenalin (4) Progestrone

Last Answer : (3) Adrenalin

Which of the following is a Vitamin? (1) Keratin (2) Riboflavin (3) Insulin (4) Adrenalin

Description : Which of the following is a Vitamin? (1) Keratin (2) Riboflavin (3) Insulin (4) Adrenalin

Last Answer : (2) Riboflavin Explanation: Riboflavin, also known as vitamin B2 is an easily absorbed colored micronutrient with a key role in maintaining health in humans and animals. It plays a key role in ... , mushrooms, and almonds are good sources of vitamin B2, but exposure to light destroys riboflavin.

Which human hormone is called love hormone? A. Oxytocin (Answer) B. Melatonin C. Adrenalin D. Renin

Description : Which human hormone is called love hormone? A. Oxytocin (Answer) B. Melatonin C. Adrenalin D. Renin

Last Answer : A. Oxytocin (Answer)

Which of the following is an emergency hormone in humans? (1) Thyroxine (2) Insulin (3) Adrenalin (4) Progestrone

Description : Which of the following is an emergency hormone in humans? (1) Thyroxine (2) Insulin (3) Adrenalin (4) Progestrone

Last Answer : Adrenalin

Which of the following is a Vitamin? (1) Keratin (2) Riboflavin (3) Insulin (4) Adrenalin

Description : Which of the following is a Vitamin? (1) Keratin (2) Riboflavin (3) Insulin (4) Adrenalin

Last Answer : Riboflavin