Description : .Viruses that infect bacteria multiply and cause their lysis, are called (a) lysozymes (b) lipolytic (c) lytic (d) lysogenic
Last Answer : (c) lytic
Description : cis-acting elements include (A) Steroid hormones (B) Calcitriol (C) Histones (D) Silencers
Last Answer : Answer : D
Description : Which of the following hormones is not involved in carbohydrate metabolism? (A) ACTH (B) Glucagon (C) Vasopressin (D) Growth hormone
Last Answer : Answer : C
Description : All the following hormones promote hyperglycemia except (A) Epinephrine (B) Norepinephrine (C) Insulin (D) Glucagon
Description : All the following hormones use cAMP as a second messenger except (A) Estrogen (B) FSH (C) Luteinizing (D) Glucagon
Last Answer : Answer : A
Description : Hormone receptors that stimulate cAMP production (A) are part of a complex of two proteins that transform the external signal into internal cAMP production (B) are proteins distinct and separate from those ... binding of the hormone (D) are not very specific and bind a number of different hormones
Last Answer : Answer : B
Description : Which one of the following hormones is derived most completely from tyrosine? (A) Glucagon (B) Thyroxine (C) Insulin (D) Prostaglandins
Description : Increased reabsorption of water from the kidney is the major consequence of which of the following hormones? (A) Cortisol (B) Insulin (C) Vasopressin (D) Aldosterone
Description : Hormones act only on specific organs or tissues. These are called (A) Active sites (B) Reaction centre (C) Target organ/Tissue(D) Physiological site HORMONE METABOLISM 231
Description : Steroid hormones are synthesized from (A) Adenine (B) Protein (C) Vitamin (D) Cholesterol
Description : It is unique that the following single antidiabetogenic hormone effectively counter acts the several diabetogenic hormones: (A) Glucagon (B) Glucocorticoids (C) Insulin (D) Growth hormone
Description : Insulin like growth hormones are produced by (A) Hypophysis (B) Liver (C) Pancreas (D) Thyroid
Description : Which of the following hormones are synthesized as prehormones (A) Vasopressin and oxytocin (B) Growth hormone and insulin (C) Insulin and parathyroid hormone (D) Insulin and Glucagon
Description : Which one of the following statements is fully correct? (A) Hormones are needed in the diet (B) Hormones can be elaborated only by endocrine glands (C) All the hormones enter the ... (D) Hormones are substance synthesized in the body in small quantities and control and regulate metabolic events
Description : One of the following is not used as a second messenger by hormones: (A) mRNA (B) cAMP (C) Calcium ions (D) Myoinisotol 1, 4, 5 triphosphate
Description : Protein bound iodine is _________ bound to protein. (A) Iodine (B) Thyroid hormones (C) Thyroxine (D) Tri iodo thyronine
Description : The second messenger for many hormones is (A) ATP (B) cyclic AMP (C) cGMP (D) UTP HORMONE METABOLISM 227
Description : A common intermediate in the synthesis of all the steroid hormones is (A) Pregnenolone (B) 17-Hydroxypregnenolone (C) Corticosterone (D) Progesterone
Description : Steroid hormones are synthesised from (A) Cholesterol (B) 7-Dehydrocholesterol (C) Calcitriol (D) 7-Hydroxycholesterol
Description : Steroid hormones are synthesised in all of the following except (A) Testes (B) Ovaries (C) Adrenal medulla (D) Adrenal cortex
Description : Secretion of thyroid hormones is regulated by (A) Hypothalamus (B) Anterior pituitary (C) Feedback regulation (D) All of these 220 MCQs IN BIOCHEMISTRY
Description : Receptors for thyroid hormones are present (A) On the cell membrane (B) Across the cell membrane (C) Inside the cells (D) In association with G-proteins
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
Description : An enzyme required for the synthesis of thyroid hormones is (A) Iodinase (B) Deiodinase (C) Thyroperoxidase (D) Thyroxine synthetase
Description : Secretion of MSH is regulated by (A) Feedback mechanism (B) Melatonin (C) Hypothalamic hormones (D) ACTH HORMONE METABOLISM 217
Description : Some hormones produce their intracellular effects by activating (A) Phospholipae A1 (B) Phospholipase B (C) Phospholipase C (D) All of these
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
Description : All the following statements about hormones are true except (A) All of them require specific carriers in plasma (B) All of them require specific receptors in target cells (C) Some of them are subject to feedback regulation (D) Some of them increase the transcription of certain genes
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
Description : Hormone receptors possess all the following properties except (A) All of them are proteins (B) They possess a recognition domain (C) They bind hormones with a high degree of specificity (D) Number of receptors in a target cell is constant
Description : Thyroid hormones are synthesized by the iodination of the amino acid: (A) Glycine (B) Phenylalanine (C) Alanine (D) Tyrosine
Description : Excess secretion of thyroid hormones causes (A) Hyperthyroidism (B) Myxoedema (C) Cretinism (D) Cushing syndrome
Description : Catecholamine hormones are (A) 3, 4-Dihydroxy derivatives of phenylethylamine (B) p-Hydroxy derivatives of phenylacetate (C) p-Hydroxy derivatives of phenylpyruvate (D) p-Hydroxy derivatives of phenyllactate
Description : Catecholamine hormones are synthesized in the (A) Chromaffin cells of adrenal medulla (B) Zona glomerulosa of adrenal cortex (C) Zona fasciculate of adrenal cortex (D) Zona reticularis of adrenal cortex
Description : All mammalian steroid hormones are formed from (A) Purine (B) Pyrimidine (C) Cholesterol (D) Pyrrole
Description : Hormones (A) Act as coenzyme (B) Act as enzyme (C) Influence synthesis of enzymes (D) Belong to B-complex group
Description : Enzymes, vitamins and hormones are common in (A) Being proteinaceous (B) Being synthesized in the body of organisms (C) Enhancing oxidative metabolism (D) Regulating metabolism
Description : Which of the following hormone increases the absorption of glucose from G.I.T? (A) Insulin (B) Throid hormones (C) Glucagon (D) FSH
Description : Cholesterol, bile salts, vitamin D and sex hormones are (A) Mucolipids (B) Glycolipids (C) Phospholipids (D) Isoprenoid lipids
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
Description : Dipalmitoyl lecithin acts as (A) Platelet activating factor (B) Second messenger for hormones (C) Lung surfactant (D) Anti-ketogenic compound
Description : The precursor of bile salts, sex hormones and vitamin D is (A) Diosgenin (B) Cholesterol (C) Campesterol (D) Ergosterol
Description : Proteinous substances which catalyze biochemical reactions are known as (A) Activators (B) Catalysts (C) Enzymes (D) Hormones
Description : The amino acid which synthesizes many hormones: (A) Valine (B) Phenyl alanine (C) Alanine (D) Histidine
Description : DOPA is an intermediate in the synthesis of (A) Thyroid hormones (B) Catecholamines (C) Melanin (D) 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
Description : Tryptophan could be considered as precursor of (A) Melanotonin (B) Thyroid hormones (C) Melanin (D) Epinephrine
Description : Which of the following hormones is not involved in carbohydrate metabolism? (A) Cortisol (B) ACTH (C) Glucogen (D) Vasopressin
Last Answer : D
Description : The blood sugar raising action of the hormones of suprarenal cortex is due to (A) Gluconeogenesis (B) Glycogenolysis (C) Glucagon-like activity (D) Due to inhibition of glomerular filtration
Last Answer : A
Description : Hormone sensitive lipase is activated by which hormones?
Last Answer : Growth hormone, corticosteroids, ACTH, adrenalin, and glucagon.