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

What is the function of thyroxine (T4) and triiodothyronine (T3)? -Biology
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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 normal serum level of triiodothyronine (T3) is (A) 0.2–0.5 ng/ml (B) 0.7–2.0 ng/ml (C) 2.0–4.0 ng/ml (D) 5.0–8.0 ng/ml HORMONE METABOLISM 211

Description : The normal serum level of triiodothyronine (T3) is (A) 0.2–0.5 ng/ml (B) 0.7–2.0 ng/ml (C) 2.0–4.0 ng/ml (D) 5.0–8.0 ng/ml HORMONE METABOLISM 211

Last Answer : Answer : B

Reverse T3 is (A) A synthetic compound given counter the effects of T3 (B) Formed from T4 but has no hormone function (C) Formed by isomerisation of T3 (D) Formed from T4 and has hormone function

Description : Reverse T3 is (A) A synthetic compound given counter the effects of T3 (B) Formed from T4 but has no hormone function (C) Formed by isomerisation of T3 (D) Formed from T4 and has hormone function

Last Answer : Answer : B

A 20 yr. old female patient presents with pain in thyroid region of the neck since few days. She gives recent history of mumps. On palpation thyroid is tender and her thyroid function test reveals raised levels of T3, T4 and low TSH. Iodine uptake is also low. Probable diagnosis in this case is:

Description : Which of the following is the most common cause of Hypothyroidism in iodine sufficient area? Options: 1) Iatrogenic hypothyroidism 2) Post-partum thyroiditis 3) Autoimmune thyroiditis 4) Thyroid aplasia

Last Answer : Correct Answer: 3) Autoimmune thyroiditis

A 20 yr. old female patient presents with pain in thyroid region of the neck since few days. She gives recent history of mumps. On palpation thyroid is tender and her thyroid function test reveals raised levels of T3, T4 and low TSH. Iodine uptake is also low. Probable diagnosis in this case is:1) de Quervain’s thyroiditis 2) Silent thyroiditis 3) Primary thyrotoxicosis 4) Hashimoto’s thyroiditis

Description : A 20 yr. old female patient presents with pain in thyroid region of the neck since few days. She gives recent history of mumps. On palpation thyroid is tender and her thyroid function ... 1) de Quervain's thyroiditis 2) Silent thyroiditis 3) Primary thyrotoxicosis 4) Hashimoto's thyroiditis

Last Answer : Correct Answer: 1) de Quervain’s thyroiditis

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

The aim of iodine therapy before subtotal thyroidectomy in Grave’s disease is: A. To render the patient euthyroid B. To restore the iodine content of the thyroid gland C. To inhibit peripheral conversion of thyroxine into triiodothyronine D. To reduce friability and vascularity of the thyroid gland

Description : The aim of iodine therapy before subtotal thyroidectomy in Grave’s disease is: A. To render the patient euthyroid B. To restore the iodine content of the thyroid gland C. To inhibit peripheral conversion of thyroxine into triiodothyronine D. To reduce friability and vascularity of the thyroid gland

Last Answer : D. To reduce friability and vascularity of the thyroid gland

Carbimazole differs from propylthiouracil in that: A. It is dose to dose less potent B. It has a shorter plasma half life C. It does not produce an active metabolite D. It does not inhibit peripheral conversion of thyroxine to triiodothyronine

Description : Carbimazole differs from propylthiouracil in that: A. It is dose to dose less potent B. It has a shorter plasma half life C. It does not produce an active metabolite D. It does not inhibit peripheral conversion of thyroxine to triiodothyronine

Last Answer : D. It does not inhibit peripheral conversion of thyroxine to triiodothyronine

The following thyroid inhibitor interferes with peripheral conversion of thyroxine to triiodothyronine: A. Propyl thiouracil B. Methimazole C. Carbimazole D. Radioactive iodine

Description : The following thyroid inhibitor interferes with peripheral conversion of thyroxine to triiodothyronine: A. Propyl thiouracil B. Methimazole C. Carbimazole D. Radioactive iodine

Last Answer : A. Propyl thiouracil

Triiodothyronine is preferred over thyroxine in the treatment of: A. Endemic goiter B. Cretinism C. Papillary carcinoma of thyroid D. Myxoedema coma

Description : Triiodothyronine is preferred over thyroxine in the treatment of: A. Endemic goiter B. Cretinism C. Papillary carcinoma of thyroid D. Myxoedema coma

Last Answer : D. Myxoedema coma

17.2 Triiodothyronine differs from thyroxine in that: A. It is more avidly bound to plasma proteins B. It has a shorter plasma half life C. It is less potent D. It has a longer latency of action (

Description : 17.2 Triiodothyronine differs from thyroxine in that: A. It is more avidly bound to plasma proteins B. It has a shorter plasma half life C. It is less potent D. It has a longer latency of action (

Last Answer : B. It has a shorter plasma half life

One of the following does not bind T3 and T4: (A) Albumin (B) TBG (C) TBPA (D) Haptoglobin

Description : One of the following does not bind T3 and T4: (A) Albumin (B) TBG (C) TBPA (D) Haptoglobin

Last Answer : Answer : D

High level of T3 and T4 and low TSH in serum indicates (A) Hyperthyroidism of pituitary origin (B) Hypothyroidism of pituitary origin (C) Hyperthyroidism of thyroid origin (D) Hypothyroidism of thyroid origin

Description : High level of T3 and T4 and low TSH in serum indicates (A) Hyperthyroidism of pituitary origin (B) Hypothyroidism of pituitary origin (C) Hyperthyroidism of thyroid origin (D) Hypothyroidism of thyroid origin

Last Answer : Answer : C

Administration of TSH increases serum T3 and T4 in (A) Hyperthyroidism of pituitary origin (B) Hyperthyroidism of thyroid origin (C) Hypothyroidism of pituitary origin (D) Hypothyroidism of thyroid origin

Description : Administration of TSH increases serum T3 and T4 in (A) Hyperthyroidism of pituitary origin (B) Hyperthyroidism of thyroid origin (C) Hypothyroidism of pituitary origin (D) Hypothyroidism of thyroid origin

Last Answer : Answer : C

The most abundant thyroid hormone in blood is (A) Free T3 (B) T3 bound to TBG (C) Free T4 (D) T4 bound to TBG

Description : The most abundant thyroid hormone in blood is (A) Free T3 (B) T3 bound to TBG (C) Free T4 (D) T4 bound to TBG

Last Answer : Answer : D

The most powerful thyroid hormone is (A) Reverse T3 (B) DIT (C) T3 (D) T4

Description : The most powerful thyroid hormone is (A) Reverse T3 (B) DIT (C) T3 (D) T4

Last Answer : Answer : C

All the following statements about thyrotropin releasing hormone are true except (A) It is secreted by hypothalamus (B) It is a pentapeptide (C) It increases the secretion of TSH (D) Its secretion is inhibited by high level of T3 and T4 in blood

Description : All the following statements about thyrotropin releasing hormone are true except (A) It is secreted by hypothalamus (B) It is a pentapeptide (C) It increases the secretion of TSH (D) Its secretion is inhibited by high level of T3 and T4 in blood

Last Answer : Answer : B

When iodine supplies are sufficient the T3 and T4 ratio in thyroglobulin is (A) 1 : 2 (B) 1 : 4 (C) 1 : 7 (D) 1 : 10

Description : When iodine supplies are sufficient the T3 and T4 ratio in thyroglobulin is (A) 1 : 2 (B) 1 : 4 (C) 1 : 7 (D) 1 : 10

Last Answer : Answer : C

In primary hypothyroidism the useful estimation is of (A) T3 (B) T4 (C) TBG (D) Autoantibodies

Description : In primary hypothyroidism the useful estimation is of (A) T3 (B) T4 (C) TBG (D) Autoantibodies

Last Answer : Answer : D

Insufficient free T3 and T4 results in (A) Grave’s disease (B) Mysoedema (C) Cushing syndrome(D) Gigantism

Description : Insufficient free T3 and T4 results in (A) Grave’s disease (B) Mysoedema (C) Cushing syndrome(D) Gigantism

Last Answer : Answer : B

Iodine is the constituent of (A) T3 and T4 (B) PTH (C) Insulin (D) Adrenaline

Description : Iodine is the constituent of (A) T3 and T4 (B) PTH (C) Insulin (D) Adrenaline

Last Answer : Answer : A

What digital carrier transmits a digital signal at 274.176 Mbps? A. T1 B. T3 C. T2 D. T4

Description : What digital carrier transmits a digital signal at 274.176 Mbps? A. T1 B. T3 C. T2 D. T4

Last Answer : D. T4

A digital carrier facility used to transmit a DSI-formatted signal at 1.544. Mbps. A. T2 B. T1 C. T4 D. T3

Description : A digital carrier facility used to transmit a DSI-formatted signal at 1.544. Mbps. A. T2 B. T1 C. T4 D. T3

Last Answer : B. T1

In a terrestrial ecosystem such as forest, maximum energy is in which trophic level? (a) T3 (b) T4 (c) T1

Description : In a terrestrial ecosystem such as forest, maximum energy is in which trophic level? (a) T3 (b) T4 (c) T1

Last Answer : (c) T1

Bamboo plant is growing in a fir forest then what will be the trophic level of it? (a) First trophic level (T1) (b) Second trophic level (T2) (c) Third trophic level (T3) (d) Fourth trophic level (T4)

Description : Bamboo plant is growing in a fir forest then what will be the trophic level of it? (a) First trophic level (T1) (b) Second trophic level (T2) (c) Third trophic level (T3) (d) Fourth trophic level (T4)

Last Answer : a) First trophic level (T1)

Which phage always carries a small piece of E.coli genome? A.Lambda B.Mu C.T4 D.T3

Description : Which phage always carries a small piece of E.coli genome? A.Lambda B.Mu C.T4 D.T3

Last Answer : B.Mu

Which phage always carries a small piece of E.coli genome? A- Lambda B- .Mu C- T4 D- T3

Description : Which phage always carries a small piece of E.coli genome? A- Lambda B- .Mu C- T4 D- T3

Last Answer : .Mu

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

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

Which of the following does not act interacellularly to produce physiologic effects a. Triiodothyronine b. Inositol triphosphate c. Aldosterone d. Cyclic AMP e. Doapamine

Description : Which of the following does not act interacellularly to produce physiologic effects a. Triiodothyronine b. Inositol triphosphate c. Aldosterone d. Cyclic AMP e. Doapamine

Last Answer : Doapamine

Match the source gland with its respective hormone and function and select the correct option. Source Hormone Function gland (a) Anterior Oxytocin Contraction of uterus pituitary muscles during child birth (b) Posterior Vasopressin Stimulates pituitary reabsorption of water in the distal tubules in the nephron (c) Corpus Estrogen Supports pregnancy luteum (d) Thyroid Thyroxine Regulates blood calcium level

Description : Match the source gland with its respective hormone and function and select the correct option. Source Hormone Function gland (a) Anterior Oxytocin Contraction of uterus pituitary muscles during ... (c) Corpus Estrogen Supports pregnancy luteum (d) Thyroid Thyroxine Regulates blood calcium level

Last Answer : (b) Posterior Vasopressin Stimulates pituitary reabsorption of water in the distal tubules in the nephron

Select the answer which correctly matches the endocrine gland with the hormone it secretes and its function/deficiency symptom. Endocrine Hormone Function/ gland Deficiency symptoms (a) Thyroid Thyroxine Lack of iodine gland in diet results in goitre (b) Corpus Testo- Stimulates luteum sterone spermatogenesis (c) Anterior Oxytocin Stimulates pituitary uterus contraction during child birth (d) Posterior Growth Oversecretion pituitary hormone stimulates (GH) abnormal growth

Description : Select the answer which correctly matches the endocrine gland with the hormone it secretes and its function/deficiency symptom. Endocrine Hormone Function/ gland Deficiency symptoms (a) ... child birth (d) Posterior Growth Oversecretion pituitary hormone stimulates (GH) abnormal growth

Last Answer : (a) Thyroid Thyroxine Lack of iodine gland in diet results in goitre

How do I attach the lenscap to the strap of my Canon EOS Rebel T3 camera that Santa got me for *********?

Description : How do I attach the lenscap to the strap of my Canon EOS Rebel T3 camera that Santa got me for Christmas?

Last Answer : answer:The H thing is more likely a viewfinder cap preventing stray light from affecting the meter when on tripod. It should slide on viewfinder the same way the rubber eye-cup slides up and off. A ... the caps. In my book, cameras should always be on and ready to shoot. Enjoy your new Rebel.

Hypothyroidism sufferers and doctors: what is your opinion about adding Cytomel (T3) to your medication routine?

Description : Hypothyroidism sufferers and doctors: what is your opinion about adding Cytomel (T3) to your medication routine?

Last Answer : Wow, I have never heard of Cytomel… I’ve been on synthroid/levothyroxine for most of my life, though, so following this question with interest.

IS the T3 pro straightener flat IRON from Bloomingdales good?

Description : IS the T3 pro straightener flat IRON from Bloomingdales good?

Last Answer : I don't straighten my hair, personally, so I don't have any first hand experience to speak of. I also wouldn't spend so much money on a straightener, but here are some things I found around ... damage or no damage to the hair. (Data based on a survey conducted by Impulse Research - February 2008)

which of the following are the factors of t4 – 81? -General Knowledge

Description : which of the following are the factors of t4 – 81? -General Knowledge

Last Answer : t^4 - 81 = (t^2 + 9)(t^2 - 9) = (t^2 + 9)(t + 3)(t - 3)

Factorise : r3/8 - s3/343 - t3/216 - 1/28 rst. -Maths 9th

Description : Factorise : r3/8 - s3/343 - t3/216 - 1/28 rst. -Maths 9th

Last Answer : Solution :-

Find the value of 1/27r3 - s3 + 125 t3 +5 rst, when s= r/3 + 5t. -Maths 9th

Description : Find the value of 1/27r3 - s3 + 125 t3 +5 rst, when s= r/3 + 5t. -Maths 9th

Last Answer : Solution :-

Will the ERL Performance Cast Exhaust Manifold for DSM work in my T4?

Description : Will the ERL Performance Cast Exhaust Manifold for DSM work in my T4?

Last Answer : It may, it all depends on which T4 you have, but it probably will.

How do you find the derivative for f(x) integral (1-t2)(1 plus t4) from sin2x to 1?

Description : How do you find the derivative for f(x) integral (1-t2)(1 plus t4) from sin2x to 1?

Last Answer : My suggestion is to multiply the binomials and do the integration directly, and then differentiate the result with respect to x. (If that doesn't work, feel free to send me a picture of the problem and I'll give it another try.)

T3 test?

Description : T3 test?

Last Answer : DefinitionTriiodothyronine (T3) is a thyroid hormone. It plays an important role in the body's control of metabolism.A laboratory test can be done to measure the amount of T3 in your blood.See also:T4 ... attached to the needle. The elastic band is removed from your arm. Once the blood has been coll

This hormone has disulphide group: (A) Glucagon (B) Insulin (C) T4 (D) Epinephrine

Description : This hormone has disulphide group: (A) Glucagon (B) Insulin (C) T4 (D) Epinephrine

Last Answer : Answer : B

In t-carrier system, t3 has a bit rate of A. 560.160 Mbps B. 44.376 Mbps C. 44.736 Mbps D. 560.106 Mbps

Description : In t-carrier system, t3 has a bit rate of A. 560.160 Mbps B. 44.376 Mbps C. 44.736 Mbps D. 560.106 Mbps

Last Answer : C. 44.736 Mbps

In the North American TDM system, what is the transmission rate in Mbps of T3 carrier system? A. 44.736 B. 6.312 C. 3.152 D. 274.176

Description : In the North American TDM system, what is the transmission rate in Mbps of T3 carrier system? A. 44.736 B. 6.312 C. 3.152 D. 274.176

Last Answer : A. 44.736

What carrier system multiplexes 96 voice band channels into a single 6.312 Mbps data signal? A. T1 carrier system B. T2 carrier system C. T1C carrier system D. T3 carrier system

Description : What carrier system multiplexes 96 voice band channels into a single 6.312 Mbps data signal? A. T1 carrier system B. T2 carrier system C. T1C carrier system D. T3 carrier system

Last Answer : B. T2 carrier system

A mutant strain of T4 - Bacteriophage, R-II, fails to lyse the E. coli but when two strains R-IIX and R-IIY are mixed then they lyse the E. coli. What may be the possible reason? (a) Bacteriophage transforms in wild. (b) It is not mutated. (c) Both strains have similar cistrons. (d) Both strains have different cistrons.

Description : A mutant strain of T4 - Bacteriophage, R-II, fails to lyse the E. coli but when two strains R-IIX and R-IIY are mixed then they lyse the E. coli. What may be the possible reason? (a) ... . (b) It is not mutated. (c) Both strains have similar cistrons. (d) Both strains have different cistrons.

Last Answer : (d) Both strains have different cistrons.

Which of the following high-speed circuits is the fastest? A) T1 B) T2 C) T3 D) DS3

Description : Which of the following high-speed circuits is the fastest? A) T1 B) T2 C) T3 D) DS3

Last Answer : DS3

100Base-T4 uses________line coding. A) NRZ B) 8B6T C) MLT-3 D) Manchester

Description : 100Base-T4 uses________line coding. A) NRZ B) 8B6T C) MLT-3 D) Manchester

Last Answer : 8B6T

________uses four pairsof voice-grade, or higher, twisted-pair cable. A) 100Base-TX B) 100Base-FX C) 100Base-T4 D) none of the above

Description : ________uses four pairsof voice-grade, or higher, twisted-pair cable. A) 100Base-TX B) 100Base-FX C) 100Base-T4 D) none of the above

Last Answer : 100Base-T4