Description : Epinephrine increases the concentration of free fatty acids in plasma by increasing (A) Extramitochondrial fatty acid synthesis (B) Mitochondrial fatty acid chain elongation (C) Microsomal fatty acid chain elongation (D) Lipolysis in adipose tissue
Last Answer : Answer : D
Description : The enzyme regulating extramitochondrial fatty acid synthesis is (A) Thioesterase (B) Acetyl CoA carboxylase (C) Acyl transferase (D) Multi-enzyme complex
Last Answer : Answer : B
Description : A cofactor required for the conversion of acetyl-CoA to malonyl-CoA in extramitochondrial fatty acid synthesis is (A) Biotin (B) FMN (C) NAD (D) NADP
Last Answer : Answer : A
Description : Which of the following cofactors or their derivatives must be present for the conversion of acetyl CoA to malonyl CoA extramitochondrial fatty acid synthesis? (A) Biotin (B) FAD (C) FMN (D) ACP
Description : For extramitochondrial fatty acid synthesis, acetyl CoA may be obtained from (A) Citrate (B) Isocitrate (C) Oxaloacetate (D) Succinate
Description : NADPH required for fatty acid synthesis can come from (A) Hexose monophosphate shunt (B) Oxidative decarboxylation of malate (C) Extramitochondrial oxidation of isocitrate (D) All of these
Description : C22 and C24, fatty acids required for the synthesis of sphingolipids in brain are formed by (A) De novo synthesis (B) Microsomal chain elongation (C) Mitochondrial chain elongation (D) All of these
Description : De novo synthesis and oxidation of fatty acids differ in the following respect: (A) Synthesis occurs in cytosol and oxidation in mitochondria (B) Synthesis is decreased and oxidation increased by ... synthesis and FAD in oxidation (D) Malonyl CoA is formed during oxidation but not during synthesis
Description : De hovo synthesis of fatty acids occurs in (A) Cytosol (B) Mitochondria (C) Microsomes (D) All of these
Description : α-Oxidation of fatty acids occurs mainly in (A) Liver (B) Brain (C) Muscles (D) Adipose tissue
Description : A pathway that requires NADPH as a cofactor is (A) Extramitochondrial folic acid synthesis (B) Ketone body formation (C) Glycogenesis (D) Gluconeogenesis
Description : All the following statements about acetyl CoA carboxylase are true except (A) It is required for de novo synthesis of fatty acids (B) It is required for mitochondrial elongation of fatty acids ( ... for microsomal elongation of fatty acids (D) Insulin converts its inactive form into its active form
Description : Formation of acetyl CoA from pyruvate for de novo synthesis of fatty acids requires (A) Pyruvate dehydrogenase complex (B) Citrate synthetase (C) ATP citrate lyase (D) All of these
Description : Acetyl CoA required for de novo synthesis of fatty acids is obtained from (A) Breakdown of existing fatty acids (B) Ketone bodies (C) Acetate (D) Pyruvate
Description : The maximum possible chain length of fatty acids formed in the pathway of de novo synthesis is (A) 16 Carbon atoms (B) 18 Carbon atoms (C) 20 Carbon atoms (D) 24 Carbon atoms
Description : Synthesis of polyunsaturated fatty acids involves the enzyme systems: (A) Acyl transferase and hydratase (B) Desaturase and elongase (C) Ketoacyl-CoA reductase and hydratase (D) Dihydroxyacetone phosphate
Description : The synthesis of fatty acids is often termed reductive synthesis. (A) NADP+ (B) NADH (C) FADH2 (D) NADPH
Description : The main pathway for denovo synthesis of fatty acids occur in (A) Cytosol (B) Mitochondria (C) Microsomes (D) Nucleus
Description : Which of the following regulates lipolysis in adipocytes? (A) Activation of fatty acid synthesis mediated by CAMP (B) Glycerol phosphorylation to prevent futile esterification of fatty acids (C) ... result of hormone stimulated increases in CAMP levels (D) Activation of CAMP production by Insulin
Last Answer : Answer : C
Description : CTP is required for the synthesis of (A) Fatty acids (B) Proteins (C) Phospholipids (D) Cholesterol
Description : In the extra mitochondrial synthesis of fatty acids, CO2 is utilized (A) To keep the system anaerobic and prevent regeneration of acetyl CoA (B) In the conversion of malonyl to CoA hydroxybutyryl CoA (C ... of acetyl CoA to malonyl CoA (D) In the formation of acetyl CoA from 1 carbon intermediates
Description : A soluble system for synthesis of fatty acids have been isolated from avian liver, required for the formation of long chain fatty acids by this system is (A) ATP (B) Acetyl CoA (C) NADPH (D) All of these
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 : One functional sub-unit of multi-enzyme complex for de novo synthesis of fatty acids contains (A) One —SH group (B) Two —SH groups (C) Three —SH groups (D) Four —SH groups FATS AND FATTY ACID METABOLISM 87
Description : De novo synthesis of fatty acids is catalysed by a multi-enzyme complex which contains (A) One-SH group (B) Two-SH groups (C) Three-SH groups (D) Four-SH groups
Description : De novo synthesis of fatty acids requires all of the following except (A) Biotin (B) NADH (C) Panthothenic acid (D) ATP
Description : For synthesis of prostaglandins, the essential fatty acids give rise to a fatty acid containing (A) 12 carbon atoms (B) 16 carbon atoms (C) 20 carbon atoms (D) 24 carbon atoms
Description : There is no net synthesis of glucose from fatty acids, why?
Last Answer : Pyruvate to acetyl CoA is a totally irreversible reaction.
Description : Which one of the following causes mammary glands to enlarge at puberty
Last Answer : Which one of the following causes mammary glands to enlarge at puberty A. Testosterone B. Progesterone C. Estrogen D. Oxytocin.
Description : Thick yellow,high protein fluid produced by mammary glands of a woman during first 2-3 days after child birth is
Last Answer : Thick yellow,high protein fluid produced by mammary glands of a woman during first 2-3 days after ... B. Hymen C. Cumulus oophorus D. Colostrum.
Description : Assertion : The mammary glands of the female starts producing milk just after the process of parturition . Reason : High level of oxytocin induces mil
Last Answer : Assertion : The mammary glands of the female starts producing milk just after the process of parturition ... D. If both Assertion & Reason are False.
Description : In prototherians mammary glands are
Last Answer : In prototherians mammary glands are A. Absent B. Present in male only C. Present in female only D. Present in male and female both
Description : Mammary glands are modified
Last Answer : Mammary glands are modified A. Sweat gland B. Sebaceous gland C. Lacrymal gland D. Endocrine gland
Description : Among the following sets of salient features, which set does not exclusively characterize mammals? (1) Presence of sweat, glands, hairs on skin and diphyoclonts (2) Presence of mammary glands, sweat ... glands, sweat glands, and diaphragm (4) Presence of mammary glands, hairs on skin and diaphragm.
Last Answer : (3) Presence of mammary' glands, sweat glands, and diaphragm Explanation: Ayes are also worm blooded and their heart is four-chambered. Crocodiles (Reptilia) also have fourchambered heart.
Description : Lactogenic hormone is secreted by - (1) Mammary glands (2) Placenta (3) Ovary (4) Pituitary
Last Answer : (4) Pituitary Explanation: Lactogenic hormone is gonadotropic hormone which is secreted by the anterior pituitary. In females, it stimulates growth of the mammary glands and lactation after parturition.
Description : n human adult females oxytocin (a) stimulates pituitary to secrete vasopressin (b) causes strong uterine contractions during parturition (c) is secreted by anterior pituitary (d) stimulates growth of mammary glands.
Last Answer : (b) causes strong uterine contractions during parturition
Description : Fetal ejection reflex in human female is induced by (a) release of oxytocin from pituitary (b) fully developed fetus and placenta (c) differentiation of mammary glands (d) pressure exerted by amniotic fluid.
Last Answer : (b) fully developed fetus and placenta
Description : Hysterectomy is surgical removal of (a) vas deferens (b) mammary glands (c) uterus (d) prostate gland
Last Answer : (c) uterus
Description : Identify the hormone with its correct matching of source and function. (a) Oxytocin - posterior pituitary, growth and maintenance of mammary glands. (b) Melatonin - pineal gland, regulates the ... sex organs. (d) Atrial natriuretic factor - ventricular wall, increases the blood pressure.
Last Answer : (b) Melatonin - pineal gland, regulates the normal rhythm of sleepwake cycle
Description : Select the correct matching of a hormone, its source and function. Hormone Source Function (a) Vasopressin Posterior Increases loss pituitary of water through urine (b) Norepine- Adrenal ... (d) Prolactin Posterior Regulates growth pituitary of mammary glands and milk formation in females
Last Answer : (b) Norepine- Adrenal Increases heart phrine medulla beat, rate of respiration and alterness
Description : What is the name of first milk/secretion (rich in antibodies) from the mammary glands of cattle after giving birth? a. Colostrum b. Serum c. Lactation d. Montana
Last Answer : a. Colostrum
Description : Which of the following glands has both an endocrine and an exocrine function? A) mammary gland B) pancreas C) pituitary D) adrenal gland E) thyroid gland
Last Answer : B) pancreas
Description : Which hormone will stimulate the release of milk from the mother's mammary glands when a baby is nursing? A) oxytocin B) prolactin C) ADH D) HGH E) epinephrine
Last Answer : A) oxytocin
Description : Lactogenic hormone is secreted by (1) Mammary glands (2) Placenta (3) Ovary (4) Pituitary
Last Answer : Pituitary
Description : Among the following sets of salient features, which set does not exclusively characterize mammals? (1) Presence of sweat glands, hairs on skin and diphyodonts (2) Presence of mammary glands, sweat ... glands, sweat glands and diaphragm (4) Presence of mammary glands, hairs on skin and diaphragm.
Last Answer : Presence of mammary glands, sweat glands and diaphragm
Description : Chain elongation of fatty acids in mammalian liver occurs in (A) Nucleus (B) Ribosomes (C) Lysosomes (D) Microsomes
Description : Oxidation of fatty acids occurs (A) In the cytosol (B) In the matrix of mitochondria (C) On inner mitochondrial membrane (D) On the microsomes
Description : Marasmus occurs from deficient intake of (A) Essential amino acids (B) Essential fatty acids (C) Calories (D) Zinc
Description : Kwashiorkor occurs when the diet is severely deficient in (A) Iron (B) Calories (C) Proteins (D) Essential fatty acids
Description : Select the correct matching in the following pairs. (a) Rough ER – Synthesis of glycogen (b) Rough ER – Oxidation of fatty acids (c) Smooth ER – Oxidation of phospholipids (d) Smooth ER – Synthesis of lipids
Last Answer : (d) Smooth ER – Synthesis of lipids