Nicotine present in tobacco is a/an (A) Alkaloid (B) Terpene (C) Steroid (D) Protein

Nicotine present in tobacco is a/an (A) Alkaloid (B) Terpene (C) Steroid (D) Protein
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Nicotine is(A) A volatile alkaloid (B) Obtained by treating by-products of the tobacco processing industry (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : Nicotine is(A) A volatile alkaloid (B) Obtained by treating by-products of the tobacco processing industry (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

Compound having phenylpropanoid origin is called (a) an alkaloid (b) a terpene (c) a lignin (d) a flavonoid

Description : Compound having phenylpropanoid origin is called (a) an alkaloid (b) a terpene (c) a lignin (d) a flavonoid

Last Answer : Ans:(c)

The poisonous alkaloid present in the oil of hemlock is (A) Cocaine (B) Nicotine (C) Quinine (D) Morphine

Description : The poisonous alkaloid present in the oil of hemlock is (A) Cocaine (B) Nicotine (C) Quinine (D) Morphine

Last Answer : Answer : A

Which one of the following is responsible for the stimulating effect of tea? (1) Tannin (2) Steroid (3) Alkaloid (4) Flavonoid

Description : Which one of the following is responsible for the stimulating effect of tea? (1) Tannin (2) Steroid (3) Alkaloid (4) Flavonoid

Last Answer : (3) Alkaloid Explanation: The stimulating effect of a tea is mainly due to what is called alkaloid caffeine which is then linked with tannin found in a tea leaf.

The only correct statement about hormone receptors is (A) Receptors for protein hormones are present in cytosol (B) Receptors for steroid hormones are membrane bound (C) Hormone-receptor binding is irreversible (D) Receptors can undergo down regulation and up regulatoin

Description : The only correct statement about hormone receptors is (A) Receptors for protein hormones are present in cytosol (B) Receptors for steroid hormones are membrane bound (C) Hormone-receptor binding is irreversible (D) Receptors can undergo down regulation and up regulatoin

Last Answer : Answer : D

Why Do Tobacco Plants Make Nicotine?

Description : Why Do Tobacco Plants Make Nicotine?

Last Answer : Actually, tobacco plants get attacked by just as many pests as any other plant.

Does using nicotine (tobacco/ ciggarettes, etc) enhance similar feelings or offer any benefits outside feeding an addiction (or the physical enjoyment of smoking as an action unrelated to substance)?

Description : Does using nicotine (tobacco/ ciggarettes, etc) enhance similar feelings or offer any benefits outside feeding an addiction (or the physical enjoyment of smoking as an action unrelated to substance)?

Last Answer : longest.question.ever. I’d say the biggest benefit of cigarettes is that it tells you what person not to date. or how they’ll taste when you kiss them.

Do tobacco leaves have nicotine?

Description : Do tobacco leaves have nicotine?

Last Answer : Need answer

Nicotine content accumulates in which part of tobacco?

Description : Nicotine content accumulates in which part of tobacco?

Last Answer : Ans.Leaves (IV) Cropping and Farming system

Nicotine content (%) of tobacco is

Description : Nicotine content (%) of tobacco is

Last Answer : Ans.0.5 to 5.5 (N. tabacum) and 3.5 to 8.0 (N. rustica)

The poisonous substance that is the main constituent of tobacco is (a) morphine (b) aspirin (c) nicotine (d) reserpine

Description : The poisonous substance that is the main constituent of tobacco is (a) morphine (b) aspirin (c) nicotine (d) reserpine

Last Answer : Ans:(c)

Excessive/chronic use of which of the following drugs is the root cause of lung cancer, cough bronchitis, emphysema, hypertension and cardiovascular symptoms? (a) Caffeine (b) Nicotine: cigarettes and chewing tobacco (c) Cocaine (d) Methadrine

Description : Excessive/chronic use of which of the following drugs is the root cause of lung cancer, cough bronchitis, emphysema, hypertension and cardiovascular symptoms? (a) Caffeine (b) Nicotine: cigarettes and chewing tobacco (c) Cocaine (d) Methadrine

Last Answer : Ans:(b)

What is the addictive drug in tobacco -------? A. Ethanol B. Nicotine (Answer) C. Ammonia D. Tar

Description : What is the addictive drug in tobacco -------? A. Ethanol B. Nicotine (Answer) C. Ammonia D. Tar

Last Answer : B. Nicotine (Answer)

Tobacco smoke is injurious to health because it contains : (1) Carbon monoxide (2) Nicotine (3) Polycyclic aromatic hydrocarbons (4) Melathene

Description : Tobacco smoke is injurious to health because it contains : (1) Carbon monoxide (2) Nicotine (3) Polycyclic aromatic hydrocarbons (4) Melathene 

Last Answer : Carbon monoxide

Which is associated with a steroid hormone? A) cyclic AMP B) the second messenger system C) production of new proteins D) activation of proteins present in an inactive form E) binding of a protein to a surface receptor on the plasma membrane

Description : Which is associated with a steroid hormone? A) cyclic AMP B) the second messenger system C) production of new proteins D) activation of proteins present in an inactive form E) binding of a protein to a surface receptor on the plasma membrane

Last Answer : C) production of new proteins

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

Alkaloid content present in sorghum leaves

Description : Alkaloid content present in sorghum leaves

Last Answer : Ans.HCN (Dhurin alkaloid)

The alkaloid present in Tea?

Description : The alkaloid present in Tea?

Last Answer : Theine

The chemical nature of GA3 is (a) Phenolic (b) Terpene (c) Purine (d) Indole

Description : The chemical nature of GA3 is (a) Phenolic (b) Terpene (c) Purine (d) Indole

Last Answer : (b) Terpene

Which of the following terms best describes the compound below? CH3(CH2)26CO2CH2(CH2)32CH3 (a) a fa(b) a wax (c) a terpene (d) an unsaturated triglyceridet

Description : Which of the following terms best describes the compound below? CH3(CH2)26CO2CH2(CH2)32CH3 (a) a fat (b) a wax (c) a terpene (d) an unsaturated triglyceride

Last Answer : a wax

Most hormone receptors are localized on the cell membrane and transduce hormone binding into altered levels of intracellular messengers. A limited number of intracellular receptors do exist. Which of the following statement(s) is/are true concerning intracellular receptors? a. The messengers or hormones must by lipophilic b. These intracellular receptors generally regulate protein synthesis c. The intracellular receptors are located entirely in the nucleus of the cell d. A heat-shock protein serves as an inhibitor protein blocking the DNA-binding domain of the steroid receptor

Description : Most hormone receptors are localized on the cell membrane and transduce hormone binding into altered levels of intracellular messengers. A limited number of intracellular receptors do exist. Which of ... protein serves as an inhibitor protein blocking the DNA-binding domain of the steroid receptor

Last Answer : Answer: a, d Although most hormone and other messenger receptors are extracellular, intracellular receptors have been identified. The hormone messengers involved for these receptors are primarily ... DNA-binding domain of the receptor. Activation involves the dissociation of the inhibitor protein

Insulin: a. is secreted as a pro-insulin b. increases protein synthesis c. is required for glucose uptake in all tissues d. is a steroid hormone

Description : Insulin: a. is secreted as a pro-insulin b. increases protein synthesis c. is required for glucose uptake in all tissues d. is a steroid hormone

Last Answer : is secreted as a pro-insulin

With regard to membrane receptors for hormones: a. they are often glycoproteins b. they are important for hormones made up of steroid c. those for insulin exhibit an intrinsic protein kinase activity d. glucagon uses calcium as a second messenger

Description : With regard to membrane receptors for hormones: a. they are often glycoproteins b. they are important for hormones made up of steroid c. those for insulin exhibit an intrinsic protein kinase activity d. glucagon uses calcium as a second messenger

Last Answer : they are often glycoproteins

Identify A, B and C in the diagramatic representation of the mechanism of hormone action. B A Response 1 C Physiological Responses Select the correct option from the following. (a) A-Steroid Hormone; B-Hormone-receptor Complex; C-Protein (b) A-Protein Hormone; B-Receptor; C-Cyclic AMP (c) A-Steroid Hormone; B-Receptor; C - Second Messenger (d) A-Protein Hormone; B-Cyclic AMP; C-Hormone-receptor Complex

Description : Identify A, B and C in the diagramatic representation of the mechanism of hormone action. B A Response 1 C Physiological Responses Select the correct option from the following. (a) A-Steroid Hormone; B- ... ; C - Second Messenger (d) A-Protein Hormone; B-Cyclic AMP; C-Hormone-receptor Complex

Last Answer : (b) A-Protein Hormone; B-Receptor; C-Cyclic AMP

Which does NOT occur in a cell stimulated by a steroid hormone? A) The steroid hormone enters the cell by crossing the plasma membrane. B) The hormone binds to a receptor molecule in the cytoplasm. C) The second messenger cyclic AMP is stimulated by the hormone-receptor complex. D) The hormone-receptor complex binds the chromatin and activates certain genes. E) DNA is transcribed, mRNA is translated, and the result is protein synthesis.

Description : Which does NOT occur in a cell stimulated by a steroid hormone? A) The steroid hormone enters the cell by crossing the plasma membrane. B) The hormone binds to a receptor molecule in the ... activates certain genes. E) DNA is transcribed, mRNA is translated, and the result is protein synthesis.

Last Answer : C) The second messenger cyclic AMP is stimulated by the hormone-receptor complex. D) The hormone-receptor complex binds the chromatin and activates certain genes.

Which statement about hormone types is correct? A) Non-steroid hormones activate an enzyme cascade. B) Steroid hormones regulate the production of a particular protein. C) Non-steroid hormones are either amino acids, peptides, or proteins. D) Steroid hormones all have four carbon rings with different side chains. E) All of the choices are correct.

Description : Which statement about hormone types is correct? A) Non-steroid hormones activate an enzyme cascade. B) Steroid hormones regulate the production of a particular protein. C) Non-steroid hormones are ... all have four carbon rings with different side chains. E) All of the choices are correct.

Last Answer : E) All of the choices are correct.

Did you know that caffeine is an alkaloid and a behavior modifier?

Description : Did you know that caffeine is an alkaloid and a behavior modifier?

Last Answer : It always stuns me when people do not know caffeine is very addictive or that they are addicted. They think because they can drink a cup or coffee or glass of Coke and go to sleep they must not be addicted. Wrong. Go without the drug and see the withdrawal begin.

Reserprine, an alkaloid derived from the root of Rauwolfia serpentina (a) Can be used to control hyperglycemia (b) Can cause severe depression of mood (c) Can decrease gastrointestinal secretion and motility (d) Has no cardiac effects (e) A spare receptor agonist

Description : Reserprine, an alkaloid derived from the root of Rauwolfia serpentina (a) Can be used to control hyperglycemia (b) Can cause severe depression of mood (c) Can decrease gastrointestinal secretion and motility (d) Has no cardiac effects (e) A spare receptor agonist

Last Answer : Ans: B

Which alkaloid is used to treat malaria ?

Description : Which alkaloid is used to treat malaria ?

Last Answer : Ans. Quinine. 

Which alkaloid is used to control hypertension ?

Description : Which alkaloid is used to control hypertension ?

Last Answer : Ans. Reserpine. 

An alkali metal salt of Palmitic acid is known as (A) Soap (B) Metallic soap (C) Detergent (D) Alkaloid

Description : An alkali metal salt of Palmitic acid is known as (A) Soap (B) Metallic soap (C) Detergent (D) Alkaloid

Last Answer : (B) Metallic soap

Choose the right combination: (A) Quinine', antimalarial, isoquinoline alkaloid (B) Reserpine, -antihypertensive, indole alkaloid (C) Quantitative microscopy, stomatal number, myrrh (D) Palmitic acid, salicylic acid , fatty acids

Description : Choose the right combination: (A) Quinine', antimalarial, isoquinoline alkaloid (B) Reserpine, -antihypertensive, indole alkaloid (C) Quantitative microscopy, stomatal number, myrrh (D) Palmitic acid, salicylic acid , fatty acids

Last Answer : (B) Reserpine, -antihypertensive, indole alkaloid

The chemical behaviour of morphine alkaloid is (A) acidic (B)Basic (C) neutral (D) amphoteric

Description : The chemical behaviour of morphine alkaloid is (A) acidic (B)Basic (C) neutral (D) amphoteric

Last Answer : (B)Basic

The ‘amine’ ergot alkaloid differs from ‘amino acid’ ergot alkaloid in that it has: A. High oral bioavailability B. Better CNS penetrability C. Weaker oxytocic action D. Strong anti-5-HT action

Description : The ‘amine’ ergot alkaloid differs from ‘amino acid’ ergot alkaloid in that it has: A. High oral bioavailability B. Better CNS penetrability C. Weaker oxytocic action D. Strong anti-5-HT action

Last Answer : A. High oral bioavailability

Choose the ergot alkaloid that is well absorbed orally, has weak vascular but prominent uterine stimulant action: A. Ergometrine B. Ergotamine C. Dihydroergotamine D. Dihydroergotoxine

Description : Choose the ergot alkaloid that is well absorbed orally, has weak vascular but prominent uterine stimulant action: A. Ergometrine B. Ergotamine C. Dihydroergotamine D. Dihydroergotoxine

Last Answer : A. Ergometrine

cis-acting elements include (A) Steroid hormones (B) Calcitriol (C) Histones (D) Silencers

Description : cis-acting elements include (A) Steroid hormones (B) Calcitriol (C) Histones (D) Silencers

Last Answer : Answer : D

A common intermediate in the synthesis of all the steroid hormones is (A) Pregnenolone (B) 17-Hydroxypregnenolone (C) Corticosterone (D) Progesterone

Description : A common intermediate in the synthesis of all the steroid hormones is (A) Pregnenolone (B) 17-Hydroxypregnenolone (C) Corticosterone (D) Progesterone

Last Answer : Answer : A

Steroid hormones are synthesised from (A) Cholesterol (B) 7-Dehydrocholesterol (C) Calcitriol (D) 7-Hydroxycholesterol

Description : Steroid hormones are synthesised from (A) Cholesterol (B) 7-Dehydrocholesterol (C) Calcitriol (D) 7-Hydroxycholesterol

Last Answer : Answer : A

Steroid hormones are synthesised in all of the following except (A) Testes (B) Ovaries (C) Adrenal medulla (D) Adrenal cortex

Description : Steroid hormones are synthesised in all of the following except (A) Testes (B) Ovaries (C) Adrenal medulla (D) Adrenal cortex

Last Answer : Answer : A

All the following statements about steroid hormones are true except (A) They are hydrophobic (B) They require carriers to transport them in circulation (C) Their receptors are intracellular (D) They require cyclic AMP as second messenger

Description : All the following statements about steroid hormones are true except (A) They are hydrophobic (B) They require carriers to transport them in circulation (C) Their receptors are intracellular (D) They require cyclic AMP as second messenger

Last Answer : Answer : D

A very efficient inhibitor of steroid biosynthesis is (A) Aminoglutethimide (B) Aminoimidazole (C) Aminoimidazolesuccinyl carboxamine (D) Aminopterin

Description : A very efficient inhibitor of steroid biosynthesis is (A) Aminoglutethimide (B) Aminoimidazole (C) Aminoimidazolesuccinyl carboxamine (D) Aminopterin

Last Answer : Answer : A

All mammalian steroid hormones are formed from (A) Purine (B) Pyrimidine (C) Cholesterol (D) Pyrrole

Description : All mammalian steroid hormones are formed from (A) Purine (B) Pyrimidine (C) Cholesterol (D) Pyrrole

Last Answer : Answer : C

Serum sodium level rises in all of the following except (A) Renal failure (B) Prolonged steroid therapy (C) Aldosteronism (D) Dehydration

Description : Serum sodium level rises in all of the following except (A) Renal failure (B) Prolonged steroid therapy (C) Aldosteronism (D) Dehydration

Last Answer : Answer : A

Vitamin A or retinal is a (A) Steroid (B) Polyisoprenoid compound containing a cyclohexenyl ring (C) Benzoquinone derivative (D) 6-Hydroxychromane

Description : Vitamin A or retinal is a (A) Steroid (B) Polyisoprenoid compound containing a cyclohexenyl ring (C) Benzoquinone derivative (D) 6-Hydroxychromane

Last Answer : Answer : B

Acetyl CoA formed from pyruvate can be used for the synthesis of all the following except (A) Glucose (B) Fatty acids (C) Cholesterol (D) Steroid hormones

Description : Acetyl CoA formed from pyruvate can be used for the synthesis of all the following except (A) Glucose (B) Fatty acids (C) Cholesterol (D) Steroid hormones

Last Answer : Answer : A

The cholesterol molecule is (A) Benzene derivative (B) Quinoline derivative (C) Steroid (D) Straight chain acid

Description : The cholesterol molecule is (A) Benzene derivative (B) Quinoline derivative (C) Steroid (D) Straight chain acid

Last Answer : Answer : C

Which of the following statement is correct about membrane cholesterol? (A) The hydroxyl group is located near the centre of the lipid layer (B) Most of the cholesterol is in the form of a cholesterol ester (C) The steroid nucleus form forms a rigid, planar structure (D) The hydrocarbon chain of cholesterol projects into the extracellular fluid

Description : Which of the following statement is correct about membrane cholesterol? (A) The hydroxyl group is located near the centre of the lipid layer (B) Most of the cholesterol is in the form ... forms a rigid, planar structure (D) The hydrocarbon chain of cholesterol projects into the extracellular fluid

Last Answer : C

Tobacco plants resistant to a nematode have been developed by the introduction of DNA that produces (in the host cells) (a) both sense and anti-sense RNA (b) a particular hormone (c) an antifeedant (d) a toxic protein.

Description : Tobacco plants resistant to a nematode have been developed by the introduction of DNA that produces (in the host cells) (a) both sense and anti-sense RNA (b) a particular hormone (c) an antifeedant (d) a toxic protein.

Last Answer : a) both sense and anti-sense RNA

Hydroxocobalamin differs from cyanocobalamin in that: A. It is more protein bound and better retained B. It is beneficial in tobacco amblyopia C. It benefits haematological but not neurological manifestations of vit B12 deficiency D. Both ‘A’ and ‘B’ are correct

Description : Hydroxocobalamin differs from cyanocobalamin in that: A. It is more protein bound and better retained B. It is beneficial in tobacco amblyopia C. It benefits haematological but not neurological manifestations of vit B12 deficiency D. Both ‘A’ and ‘B’ are correct

Last Answer : C. It benefits haematological but not neurological manifestations of vit B12 deficiency

Which toxic element is present in tobacco?

Description : Which toxic element is present in tobacco?

Last Answer : Nicotine