The colour of human skin is produced by (1) Haemoglobin(2) Insulin (3) Adrenaline (4) Melanin

The colour of human skin is produced by (1) Haemoglobin(2) Insulin (3) Adrenaline (4) Melanin 
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Melanin
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Which among the following is responsible for producing color of human skin --? A. Insulin B. Vitamin K C. Melanin (Answer) D. DNA

Description : Which among the following is responsible for producing color of human skin --? A. Insulin B. Vitamin K C. Melanin (Answer) D. DNA

Last Answer : C. Melanin (Answer)

The pigment which gives colour to the human skin is – (1) Melanin (2) Rhodopsin (3) Iodopsin (4) Anthocyanin

Description : The pigment which gives colour to the human skin is – (1) Melanin (2) Rhodopsin (3) Iodopsin (4) Anthocyanin

Last Answer : (1) Melanin Explanation: Human skin color is primarily due to the presence of melanin in the skin. Skin color ranges from almost black to white with a pinkish tinge due to blood vessels underneath. In animals melanin pigments are derivatives of the amino acid tyrosine.

The pigment which gives colour to the human skin is (1) Melanin (2) Rhodopsin (3) Iodopsin (4) Anthocyanin

Description : The pigment which gives colour to the human skin is (1) Melanin (2) Rhodopsin (3) Iodopsin (4) Anthocyanin

Last Answer : Melanin

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

A diabetic patient with moist skin, moist mouth and weak pulse; what would you do: A. Give glucose B. Administer O2 C. Administer adrenaline D. Inject insulin

Description : A diabetic patient with moist skin, moist mouth and weak pulse; what would you do: A. Give glucose B. Administer O2 C. Administer adrenaline D. Inject insulin

Last Answer : A. Give glucose

The brown-black pigment of the skin that is transferred to other epidermal cells and gives the skin its color is called A. albumin B. collagen C. keratin D. melanin

Description : The brown-black pigment of the skin that is transferred to other epidermal cells and gives the skin its color is called A. albumin B. collagen C. keratin D. melanin

Last Answer : Ans: D

Which of the following makes the skin layer impervious to water? (1) Collagen (2) Melanin (3) Keratin (4) Chitin

Description : Which of the following makes the skin layer impervious to water? (1) Collagen (2) Melanin (3) Keratin (4) Chitin

Last Answer : (3) Keratin Explanation: Keratin is a family of fibrous structural proteins. Keratin is the key structural material making up the outer layer of human skin. It is also the key structural component ... layer of the skin almost waterproof, and along with collagen and elastin, gives skin its strength.

Which of the following makes the skin layer impervious to water ? (1) Collagen (2) Melanin (3) Keratin (4) Chitin

Description : Which of the following makes the skin layer impervious to water ? (1) Collagen (2) Melanin (3) Keratin (4) Chitin 

Last Answer : Keratin

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

Adrenaline raises blood glucose level by the following actions except (a) Inducing hepatic glycogenolysis (b) Inhibiting insulin secretion from pancreatic ß cells (c) Augmenting glucagons secretion from pancreatic a cells (d) Inhibiting peripheral glucose utilization

Description : Adrenaline raises blood glucose level by the following actions except (a) Inducing hepatic glycogenolysis (b) Inhibiting insulin secretion from pancreatic ß cells (c) Augmenting glucagons secretion from pancreatic a cells (d) Inhibiting peripheral glucose utilization

Last Answer : Ans: D

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

Which of the following hormone is called emergency hormone? (1) Insulin (2) Adrenaline (3) Oestrogen (4) Oxytocin

Description : Which of the following hormone is called emergency hormone? (1) Insulin (2) Adrenaline (3) Oestrogen (4) Oxytocin

Last Answer : (2) Adrenaline Explanation: In this situation, the adrenal medulla secretes extra adrenaline and noradrenaline into the bloodstream. The hormones have important effects on the body.

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.

What are Endocrine Glands? Name any two. From which part of the body are the following secreted: a) Insulin b) Thyroxin c) Adrenaline d) Oestrogen e) Testosterone f) Cortisol

Description : What are Endocrine Glands? Name any two. From which part of the body are the following secreted: a) Insulin b) Thyroxin c) Adrenaline d) Oestrogen e) Testosterone f) Cortisol

Last Answer : These are those glands which pour their secretions directly into the blood stream . Their secretions are called as Hormones which are the chemical substances produced by the cells of one part and transported ... and many other functions of body and mind. E.g. Pituitary Gland, Thyroid Gland etc.

The secretion of insulin is stimulated by: a. adrenaline b. somatostatin c. fatty acids d. acetylcholine

Description : The secretion of insulin is stimulated by: a. adrenaline b. somatostatin c. fatty acids d. acetylcholine

Last Answer : fatty acids

Which hormone causes dilation of blood vessels, increased oxygen consumption and glucogenesis? (a) Glucagon (b) ACTH (c) Insulin (d) Adrenaline

Description : Which hormone causes dilation of blood vessels, increased oxygen consumption and glucogenesis? (a) Glucagon (b) ACTH (c) Insulin (d) Adrenaline

Last Answer : (d) Adrenaline

Glucagon release from pancreas is stimulated by: A. High blood glucose level B. Insulin C. Somatostatin D. Adrenaline

Description : Glucagon release from pancreas is stimulated by: A. High blood glucose level B. Insulin C. Somatostatin D. Adrenaline

Last Answer : D. Adrenaline

Adrenaline raises blood glucose level by the following actions except: A. Inducing hepatic glycogenolysis B. Inhibiting insulin secretion from pancreatic β cells C. Augmenting glucagon secretion from pancreatic α cells D. Inhibiting peripheral glucose utilization

Description : Adrenaline raises blood glucose level by the following actions except: A. Inducing hepatic glycogenolysis B. Inhibiting insulin secretion from pancreatic β cells C. Augmenting glucagon secretion from pancreatic α cells D. Inhibiting peripheral glucose utilization

Last Answer : D. Inhibiting peripheral glucose utilization

Adrenaline raises blood glucose level by the following actions except: A. Inducing hepatic glycogenolysis B. Inhibiting insulin secretion from pancreatic β cells C. Augmenting glucagon secretion from pancreatic α cells D. Inhibiting peripheral glucose utilization

Description : Adrenaline raises blood glucose level by the following actions except: A. Inducing hepatic glycogenolysis B. Inhibiting insulin secretion from pancreatic β cells C. Augmenting glucagon secretion from pancreatic α cells D. Inhibiting peripheral glucose utilization

Last Answer : D. Inhibiting peripheral glucose utilization

Which one of the following hormone is called ”Emergency Hormone” ? (1) Adrenaline (2) Thyroxine (3) Vasopressin (4) Insulin

Description : Which one of the following hormone is called ”Emergency Hormone” ? (1) Adrenaline (2) Thyroxine (3) Vasopressin (4) Insulin

Last Answer : Adrenaline

Which one is the most abundant protein in the animal world? (a) Trypsin (b) Haemoglobin (c) Collagen (d) Insulin

Description : Which one is the most abundant protein in the animal world? (a) Trypsin (b) Haemoglobin (c) Collagen (d) Insulin

Last Answer : (c) Collagen

Which one of the following is the most abundant protein in the animals? (a) Haemoglobin (b) Collagen (c) Lectin (d) Insulin

Description : Which one of the following is the most abundant protein in the animals? (a) Haemoglobin (b) Collagen (c) Lectin (d) Insulin

Last Answer : (b) Collagen

Your patient has fainted, the signs are, blanched face, weak pulse, moist skin, shallow respiration; your first management is: A. 1 ml adrenaline subcutaneously B. Mouth to mouth respiration C. Nitro glycerine sub lingually D. Recumbent position; supine

Description : Your patient has fainted, the signs are, blanched face, weak pulse, moist skin, shallow respiration; your first management is: A. 1 ml adrenaline subcutaneously B. Mouth to mouth respiration C. Nitro glycerine sub lingually D. Recumbent position; supine

Last Answer : D. Recumbent position; supine

Blood is red in colour due to the presence of - (1) Cytochrome (2) Chlorophyll (3) Hemocyanin (4) Haemoglobin

Description : Blood is red in colour due to the presence of - (1) Cytochrome (2) Chlorophyll (3) Hemocyanin (4) Haemoglobin

Last Answer : (4) Haemoglobin Explanation: The red color of blood comes from the hemoglobin that makes up the majority of the mass of the cell, which allows the blood cell to carry oxygen around the body. The ... hemoglobin makes up so much of the blood cell that its red color overpowers the color of the plasma.

The colour change in the Chameleon is due to the presence of - (1) Haemoglobin (2) Chromatophore (3) Chlorophyll (4) Pneumatophore

Description : The colour change in the Chameleon is due to the presence of - (1) Haemoglobin (2) Chromatophore (3) Chlorophyll (4) Pneumatophore

Last Answer : (2) Chromatophore Explanation: Chameleons have specialized cells, chromatophores, which contain pigments in their cytoplasm, in three layers below their transparent outer skin. Dispersion of the pigment granules ... is located only in the centre of the cell, the cell appears mainly transparent.

Blood is red in colour due to the presence of __________ . (1) Cytochrome (2) Chlorophyll (3) Hemocyanin (4) Haemoglobin

Description : Blood is red in colour due to the presence of __________ . (1) Cytochrome (2) Chlorophyll (3) Hemocyanin (4) Haemoglobin

Last Answer : Haemoglobin

The colour change in the Chameleon is due to the presence of (1) Haemoglobin (2) Chromatophore (3) Chlorophyll (4) Pneumatophore

Description : The colour change in the Chameleon is due to the presence of (1) Haemoglobin (2) Chromatophore (3) Chlorophyll (4) Pneumatophore

Last Answer : Chromatophore

Human insulin is being commercially produced from a transgenic species of (a) Rhizobium (b) Saccharomyces (c) Escherichia (d) Mycobacterium

Description : Human insulin is being commercially produced from a transgenic species of (a) Rhizobium (b) Saccharomyces (c) Escherichia (d) Mycobacterium

Last Answer : (c) Escherichia

The first human hormone produced by recombinant DNA technology is (a) insulin (b) estrogen (c) thyroxin (d) progesterone

Description : The first human hormone produced by recombinant DNA technology is (a) insulin (b) estrogen (c) thyroxin (d) progesterone

Last Answer : (a) insulin

In what organ in the human body is insulin produced?

Description : In what organ in the human body is insulin produced? 

Last Answer : ANSWER: PANCREAS

Haemoglobin is a type of (a) carbohydrate (b) respiratory pigment (c) vitamin (d) skin pigment.

Description : Haemoglobin is a type of (a) carbohydrate (b) respiratory pigment (c) vitamin (d) skin pigment.

Last Answer : (b) decrease in number

What is Melanin ?

Description : What is Melanin ?

Last Answer : Melanin is a type of pigment. It is located under human skin and determines the color of human skin. If the amount of melanin is high then the color of the skin becomes black and if the amount is low ... pale. The amount of melanin in the body can be controlled to some extent if away from the sun.

What is the main function of melanin in the body ?

Last Answer : The main function of melanin in the body is to protect the body from the harmful effects of sunlight.

Melanin pigment protects from which of the following radiations ?

Description : Melanin pigment protects from which of the following radiations ?

Last Answer : Melanin pigment protects from which of the following radiations ? A. X-rays B. Infra-red rays C. Visible rays D. UV rays

Melanin protects from

Description : Melanin protects from

Last Answer : Melanin protects from A. UV rays B. Visible rays C. Infrared rays D. X-rays

MSH causes (A) Dispersal of melanin granules in melanocytes (B) Increase in melanin concentration in melanocytes (C) Decerease in melanin concentration in melanocytes (D) Increase in number of melanocytes

Description : MSH causes (A) Dispersal of melanin granules in melanocytes (B) Increase in melanin concentration in melanocytes (C) Decerease in melanin concentration in melanocytes (D) Increase in number of melanocytes

Last Answer : Answer : B

Retina contains this photosensitive pigment: (A) Rhodopsin (B) Opsin (C) Retinol (D) Melanin

Description : Retina contains this photosensitive pigment: (A) Rhodopsin (B) Opsin (C) Retinol (D) Melanin

Last Answer : Answer : A

The highest concentration of cystine can be found in (A) Melanin (B) Chondroitin sulphate (C) Myosin (D) Keratin

Description : The highest concentration of cystine can be found in (A) Melanin (B) Chondroitin sulphate (C) Myosin (D) Keratin

Last Answer : Answer : D

Formation of melanin from tyrosine requires the action of (A) Dopa decarboxylation (B) Diamine oxidase (C) Peroxidase (D) Tyrosinase

Description : Formation of melanin from tyrosine requires the action of (A) Dopa decarboxylation (B) Diamine oxidase (C) Peroxidase (D) Tyrosinase

Last Answer : Answer : D

DOPA is an intermediate in the synthesis of (A) Thyroid hormones (B) Catecholamines (C) Melanin (D) Catecholamines and melanin

Description : DOPA is an intermediate in the synthesis of (A) Thyroid hormones (B) Catecholamines (C) Melanin (D) Catecholamines and melanin

Last Answer : Answer : D

All the following statements about phenylketonuria are correct except (A) Phenylalanine cannot be converted into tyrosine (B) Urinary excretion of phenylpyruvate and phenyllactate is increased (C) It can be controlled by giving a lowphenylalanine diet (D) It leads to decreased synthesis of thyroid hormones, catecholamines and melanin

Description : All the following statements about phenylketonuria are correct except (A) Phenylalanine cannot be converted into tyrosine (B) Urinary excretion of phenylpyruvate and phenyllactate is increased (C) It ... diet (D) It leads to decreased synthesis of thyroid hormones, catecholamines and melanin

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

The fo l low ing substances are ce l l inclusions except (A) Melanin (B) Glycogen (C) Lipids (D) Centrosome

Description : The fo l low ing substances are ce l l inclusions except (A) Melanin (B) Glycogen (C) Lipids (D) Centrosome

Last Answer : D

Grey hair is caused due to – (1) aging of epidermal cells (2) death of dermal cells (3) loss of sebum in epidermal cells (4) loss of melanin in epidermal cells

Description : Grey hair is caused due to – (1) aging of epidermal cells (2) death of dermal cells (3) loss of sebum in epidermal cells (4) loss of melanin in epidermal cells

Last Answer : (4) loss of melanin in epidermal cells Explanation: loss of melanin in epidermal cells.

True statements about chloroquine include: a. is safer than hydroxychloroquine at equivalent dose b. can cause corneal deposition c. causes posterior subcapsular cataract d. chloroquine is bound to the melanin of the retinal pigment epithelium e. causes reversible toxic maculopathy

Description : True statements about chloroquine include: a. is safer than hydroxychloroquine at equivalent dose b. can cause corneal deposition c. causes posterior subcapsular cataract d. chloroquine is bound to the melanin of the retinal pigment epithelium e. causes reversible toxic maculopathy

Last Answer : can cause corneal deposition

In the chemistry of vision in mammals, the photosensitive substance is called (a) rhodopsin (b) melanin (c) sclerotin (d) retinol.

Description : In the chemistry of vision in mammals, the photosensitive substance is called (a) rhodopsin (b) melanin (c) sclerotin (d) retinol.

Last Answer : (a) rhodopsin

Mast cells of connective tissue contain (a) vasopressin and relaxin (b) heparin and histamine (c) heparin and calcitonin (d) serotonin and melanin.

Description : Mast cells of connective tissue contain (a) vasopressin and relaxin (b) heparin and histamine (c) heparin and calcitonin (d) serotonin and melanin.

Last Answer : (b) heparin and histamine

Grey hair is caused due to (1) aging of epidermal cells (2) death of dermal cells (3) loss of sebum in epidermal cells (4) loss of melanin in epidermal cells

Description : Grey hair is caused due to (1) aging of epidermal cells (2) death of dermal cells (3) loss of sebum in epidermal cells (4) loss of melanin in epidermal cells

Last Answer : loss of melanin in epidermal cells

About 6.25 g of haemoglobin is produced and destroyed in the body each day and the total amount of haemoglobin in a normal healthy 70 kg weighing male adult is (A) 250 g (B) 150 g (C) 100 g (D) 70 g

Description : About 6.25 g of haemoglobin is produced and destroyed in the body each day and the total amount of haemoglobin in a normal healthy 70 kg weighing male adult is (A) 250 g (B) 150 g (C) 100 g (D) 70 g

Last Answer : Answer : D

The majority of carbon dioxide produced by our body cells is transported to the lungs as (a) attached to haemoglobin (b) dissolved in the blood (c) as bicarbonates (d) as carbonates.

Description : The majority of carbon dioxide produced by our body cells is transported to the lungs as (a) attached to haemoglobin (b) dissolved in the blood (c) as bicarbonates (d) as carbonates.

Last Answer : (c) as bicarbonates