Description : Anti-oxidant activity is present in (A) β-Carotene (B) Retinol (C) Retinoic acid (D) All of these
Last Answer : Answer : A
Last Answer : (A) β-Carotene
Description : The following form of vitamin A is used in the visual cycle: (A) Retinol (B) Retinoic acid (C) Retinaldehyde (D) Retinyl acetate
Last Answer : Answer : C
Description : The international unit of vitamin A is equivalent to the activity caused by (A) 0.3 µg of Vitamin A alcohol (B) 0.344 µg of Vitamin A alcohol (C) 0.6 µg of Vitamin A alcohol (D) 1.0 µg of Vitamin A alcohol
Description : One international unit (I.U) of vitamin D is defined as the biological activity of (A) 0.025 µg of cholecalciferol (B) 0.025 µg of 7-dehydrocholecalciferol (C) 0.025 µg of ergosterol (D) 0.025 µg of ergocalciferol VITAMINS 113
Description : On exposure to light rhodopsin forms (A) All trans-retinal (B) Cis-retinal (C) Retinol (D) Retinoic acid
Description : Two molecules of vitamin A can be formed from 1 molecule of (A) α-Carotene (B) β-Carotene (C) γ-Carotene (D) All of these
Last Answer : Answer : B
Description : Precursor of Vitamin A is (A) α-Carotene (B) β-Carotene (C) γ-Carotene (D) All of these VITAMINS 121
Last Answer : Answer : D
Description : The molecule of vitamin A1 contains (A) Benzene ring (B) β-Ionone ring (C) β-Carotene ring (D) None of these
Description : β-Carotene, precursor of vitamin A, is oxidatively cleaved by (A) β-Carotene dioxygenase (B) Oxygenase (C) Hydroxylase (D) Transferase
Description : The non-protein part of rhodopsin is (A) Retinal (B) Retinol (C) Carotene (D) Repsin
Description : Non-protein part of rhodopsin is (A) Retinal (B) Retinol (C) Carotene (D) Repsin
Description : β-Carotene, precursor of vitamin A, is oxidatively cleaved by (A) β-Carotene dioxygenase (B) Oxygenase \ (C) Hydroxylase (D) Transferase
Last Answer : (A) β-Carotene dioxygenase
Description : In the individuals who are given liberal quantities of vitamin C, the serum ascorbic acid level is (A) 1–1.4 µg/100 ml (B) 2–4 µg/100 ml (C) 1–10 µg/100 ml (D) 10–20 µg/100 ml
Description : Retinol and Retinol binding protein are bound with this protein: (A) Albumin (B) Prealbumin (C) α-globulin (D) β-globulin
Description : Retinol and retinol –binding protein (RBP) bound with this protein: (A) Albumin (B) Prealbumin (C) α2-globulin (D) β-globulin
Description : Retinol is transported to the blood as retinol attached to (A) α1-globulin (B) α2-globulin (C) β-globulin (D) γ-globulin
Description : Retinol is transported in blood bound to (A) Aporetinol binding protein (B) α2-Globulin (C) β-Globulin (D) Albumin
Description : Dictary deficiency of this vitamin leads to night blindness: (A) Retinol (B) Niacin (C) Ascorbic acid (D) Cholecalciferol VITAMINS 125
Description : Conversion of β-carotene into retinal requires the presence of (A) β-Carotene dioxygenase (B) Bile salts (C) Molecular oxygen (D) All of these
Description : In what vitamin would retinoic acid be found?
Last Answer : ANSWER: VITAMIN A
Description : Both Wernicke’s disease and beriberi can be reversed by administrating (A) Retinol (B) Thiamin (C) Pyridoxine (D) Vitamin B12
Description : Retinoic acid is involved in the synthesis of (A) Rhodopsin (B) Iodopsin (C) Porphyrinopsin (D) Glycoproteins
Description : Retinoic acid can (A) Act as a photo receptor (B) Support growth and differentiation (C) Act as an anti-oxidant (D) None of these
Description : Retinal is converted into retinoic acid in the presence of (A) Retinal oxidase (B) Retinal carboxylase (C) Retinene reductase(D) Spontaneously
Description : Retinoic acid participates in the synthesis of (A) Iodopsin (B) Rhodopsin (C) Glycoprotein (D) Cardiolipin
Description : Which of the following is known as Vitamin B1? (1) Retinol (2) Thiamin (3) Riboflavin (4) Ascorbic Acid
Last Answer : (2) Thiamin Explanation: Thiamine also called vitamin B 1, named as the "thio-vitamine" ("sulfurcontaining vitamin") is a watersoluble vitamin of the B complex. First named aneurin for ... the generic descriptor name vitamin B 1. Its phosphate derivatives are involved in many cellular processes.
Description : Which one of the following is a fat-soluble vitamin and its related deficiency disease? (a) Retinol - Xerophthalmia (b) Cobalamine - Beri-beri (c) Calciferol - Pellagra (d) Ascorbic acid - Scurvy
Last Answer : (a) Retinol - Xerophthalmia
Description : Which of the following is known as Vitamin B1 ? (1) Retinol (2) Thiamin (3) Riboflavin (4) Ascorbic Acid
Last Answer : Thiamin
Description : The organism commonly used for the production of carotene is/ are β A- Phycomycesblakesleeanus B- Phycomycesblakesleeanus C- Blakesleatrispora D- all of these
Last Answer : all of these
Description : Pseudomonas aeruginosa forms a blue water soluble pigment called A-pyocyanin B- chlororaphin C- pyoverdin D-β-carotene
Last Answer : pyocyanin
Description : Which is a pro vitamin or vitamin that has antioxidant properties? (A) Beta carotene (B) Vitamin E (C) Vitamin C (D) Vitamin D
Description : Spinach leaves are rich source of---- A. Amino acid B. Iron (Answer) C. Vitamin E D. Carotene
Last Answer : B. Iron (Answer)
Description : Primase activity is present in (A) DNA polymerase II (B) DNA polymerase α (C) DNA polymerase β (D) DNA polymerase δ
Description : Tyrosine kinase activity is present in (A) α-Adrenergic receptors (B) β-Adrenergic receptors (C) Cholinergic receptors (D) Insulin receptors
Description : Retinol isomerase is present in (A) Retina (B) Liver (C) Both (A) and (B) (D) None of these
Description : Vitamin C activity is present in (A) D-Ascorbic acid (B) D-Dehydroascorbic acid (C) L-Ascorbic acid (D) Both A and B
Description : Serum level of chromium in healthy adult is about (A) 2-5 µg/100 ml (B) 6-20 µg/100 ml (C) 30-60 µg/100 ml (D) 50-100 µg/100 ml
Description : Vitamin K is a cofactor for (A) Gamma carboxylation of glutamic acid residue (B) β-Oxidation of fatty acid (C) Formation of γ-amino butyrate (D) Synthesis of tryptophan
Description : Milk is a good source of (A) Proteins, calcium and iron (B) Proteins, calcium and ascorbic acid (C) Proteins, lactose and retinol (D) Proteins, lactose and essential fatty acids
Description : Normal range of total tri-iodothyronine in serum is (A) 0.1–0.2 ng/dl (B) 0.1–0.2 µg/dl (C) 0.8–2.4 ng/dl (D) 0.8–2.4 µg/dl
Description : Normal range of total thyroxine in serum is (A) 0.8–2.4 ng/dl (B) 0.8–2.4 µg/dl (C) 5–12 ng/dl (D) 5–12 µg/dl
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
Description : In the resting state plasma concentration of cortisol is (A) 0.4–2.0 µg/100 ml (B) 2.0–4.0 µg/100 ml (C) 5.0–15.0 µg/100 ml (D) 18.0–25.0 µg/100 ml
Description : In blood the values of manganese in µg / 100 ml varies between (A) 0–4 (B) 2–4 (C) 3–5 (D) 4–20
Description : Retinol is the common name for what vitamin?
Description : The drug, Interleukin-2, is an example of which type of biologic response modifier? a) Cytokine Other cytokines include interferon alfa and filgrastim. b) Monoclonal antibodies Monoclonal ... an example of a retinoid. d) Antimetabolites Antimetabolites are cell cycle-specific antineoplastic agents.
Last Answer : a) Cytokine Other cytokines include interferon alfa and filgrastim.
Description : Good vision depends on adequate intake of carotene rich food. Select the best option from the following statements. (1) Vitamin A derivatives are formed from carotene. (2) The photopigments are embedded in the membrane discs of the inner ... (1) and (3) (c) (2), (3) and (4) (d) (1) and (2)
Last Answer : (b) (1) and (3)
Description : Spinach leaves are rich source of (1) Vitamin A (2) Iron (3) Carotene (4) Vitamin E
Last Answer : (2) Iron
Description : Good vision depends on adequate intake of carotene rich food : Select the best option from the following statements : (a) Vitamin A derivatives are formed from carotene (b) The photopigments are embedded in the membrane discs of the inner segment ... (a) and (c) (3) (b), (c) and (d) (4) (a) and (b)
Last Answer : (1) (a), (c) and (d)