Effect of thyroxine on B.M.R is

Effect of thyroxine on B.M.R is
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Effect of thyroxine on B.M.R is A. Increase B. Decrease C. Uncertain D. No effect
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Assertion : Thyroxine shows calorigenic effect. Reason : Thyroxine shows calorigenic effect. Reason : Thyroxine increases catabolism, produces energy

Description : Assertion : Thyroxine shows calorigenic effect. Reason : Thyroxine shows calorigenic effect. Reason : Thyroxine increases catabolism, produces energy

Last Answer : Assertion : Thyroxine shows calorigenic effect. Reason : Thyroxine shows calorigenic effect. Reason : ... If both Assertion and Reason are false.

Nicotine acts as a stimulant, because it mimics the effect of(a) testosterone (b) dopamine (c) thyroxine (d) acetylcholine.

Description : Nicotine acts as a stimulant, because it mimics the effect of (a) testosterone (b) dopamine (c) thyroxine (d) acetylcholine.

Last Answer : (d) acetylcholine.

What is the function of thyroxine (T4) and triiodothyronine (T3)? -Biology

Description : What is the function of thyroxine (T4) and triiodothyronine (T3)? -Biology

Last Answer : answer:

How many of the following substances are secreted by exocrine glands. mucus, thyroxine, saliva, earwax, insulin, oil, milk, digestive enzymes, melaton

Description : How many of the following substances are secreted by exocrine glands. mucus, thyroxine, saliva, earwax, insulin, oil, milk, digestive enzymes, melaton

Last Answer : How many of the following substances are secreted by exocrine glands. mucus, thyroxine, saliva, earwax, insulin, ... A. Four B. Five C. Six D. Seven

Toxic agents present in flood which interface with thyroxine synthesis lead to the development of

Description : Toxic agents present in flood which interface with thyroxine synthesis lead to the development of

Last Answer : Toxic agents present in flood which interface with thyroxine synthesis lead to the development of A ... . Cretinism C. Simple goiter D. Thyrotoxicosis

A health disorder that results from the deficiency of thyroxine in adults and is characterized by (i) a low metabolic rate, (ii) increase in body weig

Description : A health disorder that results from the deficiency of thyroxine in adults and is characterized by (i) a low metabolic rate, (ii) increase in body weig

Last Answer : A health disorder that results from the deficiency of thyroxine in adults and is characterized by ( ... B. Myxedema C. Simple goiter D. Hypothyroidism

Thyroxine is

Description : Thyroxine is

Last Answer : Thyroxine is A. Vitamin B. Enzime C. Hormone D. Excretory product

Which one of the following hormones is derived most completely from tyrosine? (A) Glucagon (B) Thyroxine (C) Insulin (D) Prostaglandins

Description : Which one of the following hormones is derived most completely from tyrosine? (A) Glucagon (B) Thyroxine (C) Insulin (D) Prostaglandins

Last Answer : Answer : B

__________ hormone is a single chain polypeptide having 32 amino acids with molecular weight of 3,600. (A) Testosteron (B) Thyroxine (C) Calcitonine (D) Vasopressin

Description : __________ hormone is a single chain polypeptide having 32 amino acids with molecular weight of 3,600. (A) Testosteron (B) Thyroxine (C) Calcitonine (D) Vasopressin

Last Answer : Answer : C

Which of the following statements is correct? (A) Thyroxine inhibits utilization of glucose (B) Insulin increases utilization of glucose (C) Glucagon promotes muscle glycogenolysis (D) Insulin inhibits lipogenesis from carbohydrates

Description : Which of the following statements is correct? (A) Thyroxine inhibits utilization of glucose (B) Insulin increases utilization of glucose (C) Glucagon promotes muscle glycogenolysis (D) Insulin inhibits lipogenesis from carbohydrates

Last Answer : Answer : B

Thyroxine is derived from (A) Tyrosine (B) Tyranine (C) Taurine (D) Tryptaine

Description : Thyroxine is derived from (A) Tyrosine (B) Tyranine (C) Taurine (D) Tryptaine

Last Answer : Answer : A

T3 is (A) Thyroxine (B) Triodo thyronine (C) Triodo tyrosine (D) Reverse tri iodo thyronine

Description : T3 is (A) Thyroxine (B) Triodo thyronine (C) Triodo tyrosine (D) Reverse tri iodo thyronine

Last Answer : Answer : B

Calcitomica is antagonist to (A) Serotonin (B) Thyroxine (C) Tri iodo thyronine (D) Para thyroid hormone

Description : Calcitomica is antagonist to (A) Serotonin (B) Thyroxine (C) Tri iodo thyronine (D) Para thyroid hormone

Last Answer : Answer : D

Protein bound iodine is _________ bound to protein. (A) Iodine (B) Thyroid hormones (C) Thyroxine (D) Tri iodo thyronine

Description : Protein bound iodine is _________ bound to protein. (A) Iodine (B) Thyroid hormones (C) Thyroxine (D) Tri iodo thyronine

Last Answer : Answer : B

Normal range of total thyroxine in serum is (A) 0.8–2.4 ng/dl (B) 0.8–2.4 µg/dl (C) 5–12 ng/dl (D) 5–12 µg/dl

Description : Normal range of total thyroxine in serum is (A) 0.8–2.4 ng/dl (B) 0.8–2.4 µg/dl (C) 5–12 ng/dl (D) 5–12 µg/dl

Last Answer : Answer : D

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

Binding of thyroxine to its receptors (A) Activates Adenylate cyclase (B) Activates guanylate cyclase (C) Activates a stimulatory G-protein (D) Increases transcription

Description : Binding of thyroxine to its receptors (A) Activates Adenylate cyclase (B) Activates guanylate cyclase (C) Activates a stimulatory G-protein (D) Increases transcription

Last Answer : Answer : D

When thyroxine binding globulin and thyroxine binding pre-albumin are saturated with thyroxine, the excess hormone is transported by (A) Albumin (B) Gamma globulins (C) Transcortin (D) None of these

Description : When thyroxine binding globulin and thyroxine binding pre-albumin are saturated with thyroxine, the excess hormone is transported by (A) Albumin (B) Gamma globulins (C) Transcortin (D) None of these

Last Answer : Answer : A

Thyroid hormones are present in blood (A) In free form (B) In association with thyroxine binding globulin (TBG) (C) In association with thyroxine binding prealbumin (TBPA) (D) Mainly in association with TBG, partly in free form and sometimes in association with TBPA also

Description : Thyroid hormones are present in blood (A) In free form (B) In association with thyroxine binding globulin (TBG) (C) In association with thyroxine binding prealbumin (TBPA) (D) Mainly in association with TBG, partly in free form and sometimes in association with TBPA also

Last Answer : Answer : D

In thyroxine, tyrosine residues are iodinated at positions: (A) 1 and 3 (B) 2 and 4 (C) 3 and 5 (D) 4 and 6

Description : In thyroxine, tyrosine residues are iodinated at positions: (A) 1 and 3 (B) 2 and 4 (C) 3 and 5 (D) 4 and 6

Last Answer : Answer : C

Thyroperoxidase iodinates (A) Free tyrosine in thyroid gland (B) Tyrosine residues of thyroglobulin (C) Tyrosine residues of thyroxine binding globulin (D) Tyrosine residues of thyroxine binding prealbumin

Description : Thyroperoxidase iodinates (A) Free tyrosine in thyroid gland (B) Tyrosine residues of thyroglobulin (C) Tyrosine residues of thyroxine binding globulin (D) Tyrosine residues of thyroxine binding prealbumin

Last Answer : Answer : B

An enzyme required for the synthesis of thyroid hormones is (A) Iodinase (B) Deiodinase (C) Thyroperoxidase (D) Thyroxine synthetase

Description : An enzyme required for the synthesis of thyroid hormones is (A) Iodinase (B) Deiodinase (C) Thyroperoxidase (D) Thyroxine synthetase

Last Answer : Answer : C

TSH stimulates the synthesis delete (A) Thyroxine (B) Adrenocorticoids (C) Epinephrine (D) Insulin

Description : TSH stimulates the synthesis delete (A) Thyroxine (B) Adrenocorticoids (C) Epinephrine (D) Insulin

Last Answer : Answer : A

The normal serum level of thyroxine (T4) is (A) 2.0–4.0 µg/100 ml (B) 5.5–13.5 µg/100 ml (C) 14.0–20.3 µg/100 ml (D) 20.0–25.0 µg/100 ml

Description : The normal serum level of thyroxine (T4) is (A) 2.0–4.0 µg/100 ml (B) 5.5–13.5 µg/100 ml (C) 14.0–20.3 µg/100 ml (D) 20.0–25.0 µg/100 ml

Last Answer : Answer : B

ACTH stimulates the secretion of (A) Glucocorticoids (B) Epinephrine (C) Thyroxine (D) Luteinizing hormone

Description : ACTH stimulates the secretion of (A) Glucocorticoids (B) Epinephrine (C) Thyroxine (D) Luteinizing hormone

Last Answer : Answer : A

Acromegaly results due to excessive release of (A) Thyroxine (B) Growth hormone (C) Insulin (D) Glucagon

Description : Acromegaly results due to excessive release of (A) Thyroxine (B) Growth hormone (C) Insulin (D) Glucagon

Last Answer : Answer : B

Hormone that binds to intracellular receptor is (A) Adrenocorticotropic hormone (B) Thyroxine (C) Follicle stimulating hormone (D) Glucagon

Description : Hormone that binds to intracellular receptor is (A) Adrenocorticotropic hormone (B) Thyroxine (C) Follicle stimulating hormone (D) Glucagon

Last Answer : Answer : B

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

Chromium is potentiator of (A) Insulin (B) Glucagon (C) Thyroxine (D) Parathromone

Description : Chromium is potentiator of (A) Insulin (B) Glucagon (C) Thyroxine (D) Parathromone

Last Answer : Answer : A

The desaturation and chain elongation system of polyunsaturated fatty acid are enhanced by (A) Insulin (B) Glucagon (C) Epinephrine (D) Thyroxine

Description : The desaturation and chain elongation system of polyunsaturated fatty acid are enhanced by (A) Insulin (B) Glucagon (C) Epinephrine (D) Thyroxine

Last Answer : Answer : A

The harmone acting directly on intestinal mucosa and stimulating glucose absorption is (A) Insulin (B) Glucagon (C) Thyroxine (D) Vasopressin

Description : The harmone acting directly on intestinal mucosa and stimulating glucose absorption is (A) Insulin (B) Glucagon (C) Thyroxine (D) Vasopressin

Last Answer : Answer : C

The desaturation and chain elongation system of polyunsaturated fatty acids are greatly diminished in the absence of (A) Insulin (B) Glycagon (C) Epinephrine (D) Thyroxine

Description : The desaturation and chain elongation system of polyunsaturated fatty acids are greatly diminished in the absence of (A) Insulin (B) Glycagon (C) Epinephrine (D) Thyroxine

Last Answer : Answer : A

The hormone that stimulates heart beat is – (1) Thyroxine (2) Gastrin (3) Glycogen (4) Dopamine

Description : The hormone that stimulates heart beat is – (1) Thyroxine (2) Gastrin (3) Glycogen (4) Dopamine

Last Answer : (1) Thyroxine Explanation: Thyroxine is the main hormone secreted into the bloodstream by the thyroid gland. It plays vital roles in digestion, heart and muscle function, brain development and ... and cardiac output and also promotes vasodilation, which leads to enhanced blood flow to many organs.

The thymus gland produces a hormone called – (1) thyroxine (2) thymosin (3) thyronine (4) calcitonin

Description : The thymus gland produces a hormone called – (1) thyroxine (2) thymosin (3) thyronine (4) calcitonin

Last Answer : (2) thymosin Explanation: The thymus is a specialized primary lymphoid organ of the immune system. Thymosin hormones are typically produced by the thymus gland and trigger the creation of Tcells, which are used by the immune system to fight disease. The thymus gland is only active until puberty.

is a hormone that regulates the amount of glucose in the blood? (1) Glucogen (2) Thyroxine (3) Oxytocin (4) Insulin

Description : is a hormone that regulates the amount of glucose in the blood? (1) Glucogen (2) Thyroxine (3) Oxytocin (4) Insulin

Last Answer : (4) Insulin Explanation: Insulin is a hormone that allows our body to use sugar (glucose) from carbohydrates in the food that we eat for energy or to store glucose for future use. Insulin ... or too low (hypoglycemia), Insulin is a peptide hormone produced by beta cells of the pancreatic islets.

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 one of the following hormones contains iodine? (1) Thyroxine (2) Testosterone (3) Insulin (4) Adrenaline

Description : Which one of the following hormones contains iodine? (1) Thyroxine (2) Testosterone (3) Insulin (4) Adrenaline

Last Answer : (1) Thyroxine Explanation: Thyroxine is produced by attaching iodine atoms to the ring structures of this protein's tyrosine residues; thyroxine (T4) contains four iodine atoms

Blood pressure may be increased by the excessive secretion of (1) Thyroxine (2) Testosterone (3) Estradiol (4) Estrol

Description : Blood pressure may be increased by the excessive secretion of (1) Thyroxine (2) Testosterone (3) Estradiol (4) Estrol

Last Answer : (1) Thyroxine Explanation: With its excess secretion, also known as hyper secretion, thyroxin (T4) causes an increased heart rate, high blood pressure, possible palpitations, and could lead to heart failure. It is related to hyperthyroidism.

Which one of the following hormones contains iodine? (1) Thyroxine (2) Testosterone (3) Insulin (4) Adrenaline

Description : Which one of the following hormones contains iodine? (1) Thyroxine (2) Testosterone (3) Insulin (4) Adrenaline

Last Answer : (1) Thyroxine Explanation: Thyroxine is produced by attaching iodine atoms to the ring structures of this protein's tyrosine residues; thyroxine (T4) contains four iodine atoms, while triiodothyronine (T3), otherwise identical to T4, has one less iodine atom per molecule.

Compared to a bull a bullock is docile because of (a) higher levels of cortisone (b) lower levels of blood testosterone (c) lower levels of adrenaline/noradrenaline in its blood (d) higher levels of thyroxine.

Description : Compared to a bull a bullock is docile because of (a) higher levels of cortisone (b) lower levels of blood testosterone (c) lower levels of adrenaline/noradrenaline in its blood (d) higher levels of thyroxine.

Last Answer : (b) lower levels of blood testosterone

The following are true: a. thyroxine is formed by iodination of tyrosine b. the ratio of T3 :T4 secreted by the thyroid gland is 1:5 c. about 99.5% of thyroxines is protein bound d. T3 is more active than T4

Description : The following are true: a. thyroxine is formed by iodination of tyrosine b. the ratio of T3 :T4 secreted by the thyroid gland is 1:5 c. about 99.5% of thyroxines is protein bound d. T3 is more active than T4

Last Answer : T3 is more active than T4

The following are true about the thyroid hormone a. iodide ions enter the follicle cells by passive diffusion b .T4 and T3 bind to the receptors in nuclei c. thyroxine, once synthesized, is coupled to thyroglobulin until released d. a greater proportion of tri-iodothyronine is formed when iodine is deficient

Description : The following are true about the thyroid hormone a. iodide ions enter the follicle cells by passive diffusion b .T4 and T3 bind to the receptors in nuclei c. thyroxine, once ... thyroglobulin until released d. a greater proportion of tri-iodothyronine is formed when iodine is deficient

Last Answer : T4 and T3 bind to the receptors in nuclei

The followings are steroid hormones: a. corticotrophic hormone (ACTH) b. aldosterone c. thyroxine d. growth hormone

Description : The followings are steroid hormones: a. corticotrophic hormone (ACTH) b. aldosterone c. thyroxine d. growth hormone

Last Answer : aldosterone

The most important component of the oral contraceptive pills is (a) thyroxine (b) luteinising hormone (c) progesterone (d) growth hormone

Description : The most important component of the oral contraceptive pills is (a) thyroxine (b) luteinising hormone (c) progesterone (d) growth hormone

Last Answer : (c) progesterone

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

Which one of the following pairs of hormones are the examples of those that can easily pass through the cell membrane of the target cell and bind to a receptor inside it (mostly in the nucleus)?(a) Insulin, glucagon (b) Thyroxine, insulin (c) Somatostatin, oxytocin (d) Cortisol, testosterone

Description : Which one of the following pairs of hormones are the examples of those that can easily pass through the cell membrane of the target cell and bind to a receptor inside it (mostly in the nucleus)? (a) Insulin, glucagon (b) Thyroxine, insulin (c) Somatostatin, oxytocin (d) Cortisol, testosterone

Last Answer : (d) Cortisol, testosterone

The amino acid tryptophan is the precursor for the synthesis of (a) estrogen and progesterone (b) cortisol and cortisone (c) melatonin and serotonin (d) thyroxine and triiodothyronine

Description : The amino acid tryptophan is the precursor for the synthesis of (a) estrogen and progesterone (b) cortisol and cortisone (c) melatonin and serotonin (d) thyroxine and triiodothyronine

Last Answer : (c) melatonin and serotonin

Secretion of progesterone by corpus luteum is initiated by (a) testosterone (b) thyroxine (c) MSH (d) LH.

Description : Secretion of progesterone by corpus luteum is initiated by (a) testosterone (b) thyroxine (c) MSH (d) LH.

Last Answer : d) LH.

Acromegaly is caused by (a) excess of STH (b) excess of thyroxine (c) deficiency of thyroxine (d) excess of adrenaline

Description : Acromegaly is caused by (a) excess of STH (b) excess of thyroxine (c) deficiency of thyroxine (d) excess of adrenaline

Last Answer : (a) excess of STH

Which one of the following pairs correctly matches a hormone with a disease resulting from its deficiency? (a) Luteinising - Failure of ovulation hormone (b) Insulin - Diabetes insipidus (c) Thyroxine - Tetany (d) Parathyroid - Diabetes mellitus hormone

Description : Which one of the following pairs correctly matches a hormone with a disease resulting from its deficiency? (a) Luteinising - Failure of ovulation hormone (b) Insulin - Diabetes insipidus (c) Thyroxine - Tetany (d) Parathyroid - Diabetes mellitus hormone

Last Answer : (a) Luteinising - Failure of ovulation hormone