Retinoic acid can (A) Act as a photo receptor (B) Support growth and differentiation (C) Act as an anti-oxidant (D) None of these

1 Answer

Answer :

Answer : B

Related questions

Description : Anti-oxidant activity is present in (A) β-Carotene (B) Retinol (C) Retinoic acid (D) All of these

Last Answer : Answer : A

Description : Anti-oxidant activity is present in (A) β-Carotene (B) Retinol (C) Retinoic acid (D) All of these

Last Answer : (A) β-Carotene

Description : This vitamin acts as anti oxidant. (A) Vitamin A (B) Vitamin D (C) Vitamin E (D) Vitamin K

Last Answer : Answer : D

Description : This vitamin acts as anti-oxidant: (A) Vitamin A (B) Vitamin D (C) Vitamin E (D) Vitamin K

Last Answer : Answer : C

Description : Ultraviolet radiations produce the photo oxidant

Last Answer : Ultraviolet radiations produce the photo oxidant A. `SO_(2)` B. Flouride C. CO D. `O_(3)`

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 : Retinoic acid is involved in the synthesis of (A) Rhodopsin (B) Iodopsin (C) Porphyrinopsin (D) Glycoproteins

Last Answer : Answer : D

Description : One international Unit of vitamin A is the activity present in (A) 0.3 µg of β-Carotene (B) 0.3 µg of retinol (C) 0.6 µg of retinoic acid (D) All of these

Last Answer : Answer : B

Description : Retinal is converted into retinoic acid in the presence of (A) Retinal oxidase (B) Retinal carboxylase (C) Retinene reductase(D) Spontaneously

Last Answer : Answer : D

Description : On exposure to light rhodopsin forms (A) All trans-retinal (B) Cis-retinal (C) Retinol (D) Retinoic acid

Last Answer : Answer : A

Description : Retinoic acid participates in the synthesis of (A) Iodopsin (B) Rhodopsin (C) Glycoprotein (D) Cardiolipin

Last Answer : Answer : C

Description : Which of the following is an anti oxidant? (1 ) Vitamin-C (2) Vitamin-K (3) Vitamin-B (4) Vitarnin-D

Last Answer : (1 ) Vitamin-C Explanation: Vitamin B12 contains cobalt. Deficiency of Vitamin B12 causes pernicious anaemia and inflammation of tongue and mouth. Vitamin A. Vitamin C and Vitamin E are antioxidants.

Description : Which of the following is an anti oxidant ? (1) Vitamin-C (2) Vitamin-K (3) Vitamin-B (4) Vitamin-D

Last Answer : Vitamin-C

Description : Clonal selection includes a. Antigen-receptor binding on B cells. b. Antibody secretion recognizing same epitope as on B cell receptors. c. Differentiation of B cells into plasma cells and memory cells. d. All the above (A—C) are correct.

Last Answer : d. All the above (A—C) are correct.

Description : Which of the following act both as oxidant & reductant :-

Last Answer : Which of the following act both as oxidant & reductant :- A. `H_(2)S` B. `SO_(3)` C. `H_(2)O_(2)` D. `F_(2)`

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 : In what vitamin would retinoic acid be found?

Last Answer : ANSWER: VITAMIN A

Description : Which of the following statement is correct? (1) The causal organism for foolish seedling disease is the source of gibberellin (2) Abscisic acid is a growth promoter (3) The ratio of auxin : cytokinin control cell differentiation (4) Bolting of cabbage can be induced by treatment with IAA

Last Answer : Ans. ((d))

Description : The more positive the E0, the greater the tendency of the oxidant member of that pair to (A) Lose electrons (B) Gain electrons (C) Lose (or) gain electrons (D) Lose and gain electrons

Last Answer : B

Description : Ras proto-oncogene encodes (A) Epidermal growth factor (EGF) (B) Receptor for EGF (C) Signal transducer for EGF (D) Nuclear transcription factor

Last Answer : Answer : C

Description : Phosphorylated IRS-1 activates GRB-2 which is (A) G-protein receptor binding protein-2 (B) Growth factor receptor binding protein-2 (C) Growth hormone receptor binding protein-2 (D) Glucocorticoid receptor binding protein-2 226 MCQs IN BIOCHEMISTRY

Last Answer : Answer : B

Description : Binding of growth hormone to its receptor results in increased transcription of (A) c-fos gene (B) c-myc gene (C) p-53 gene (D) None of these

Last Answer : Answer : A

Description : Binding of growth hormone to its receptor results in phosphorylation of (A) JAK-2 (B) Growth hormone receptor (C) STATs (D) All of these

Last Answer : Answer : D

Description : All the following statements about epidermal growth factor are true except (A) It is a protein (B) It possess quaternary structure (C) Its receptor is made up of a single polypeptide chain (D) Its receptor possesses tyrosine kinase domain

Last Answer : Answer : B

Description : What is a photo receptor sensitive to color?

Last Answer : Feel Free to Answer

Description : Which is the sensory receptor involved in detecting blood pressure? (1) Chemo receptor (2) Mechano receptor (3) Photo receptor (4) Magneto receptor

Last Answer : (2) Mechano receptor Explanation: Baroreceptors are sensors located in the blood vessels of all vertebrate animals that sense the blood pressure and relay the information to the brain, so that ... . Mechanoreceptors are the sensory receptors that respond to any type of primary stimuli of pressure.

Description : Which is the sensory receptor involved in detecting blood pressure? (1) Chemo receptor (2) Mechano receptor (3) Photo receptor (4) Magneto receptor

Last Answer : (2) Mechano receptor Explanation: Mechano receptors are the sensory receptors that respond to any type of primary stimuli of pressure.

Description : Which is the sensory receptor involved in detecting blood pressure? (1) Chemo receptor (2) Mechano receptor (3) Photo receptor (4) Magneto receptor

Last Answer : Mechano receptor

Description : Do you have any information about anti nmda receptor encephalitis and a possible connection to autism?

Last Answer : Never even heard of it until your question. It makes sense in women. If the immune system is going after similar cells in the ovaries the cells in the brain would get similar treatment. But why ... That might be a link to why vaccinations and autism were thought to be related at one point. GQ

Description : In human body, the cell growth and differentiation are highly controlled and regulated, but in cancer cells. (a) there is breakdown of these regulatory mechanism leading to formation of benign and malignant ... is mutated and produced in less amount (d) DNA is mutated and produced in less amount

Last Answer : Ans:(a)

Description : What is oxidant and toxin and how to recognize it?

Last Answer : The oxidizer receives the electron and the oxidant donates. In short , remember (awake scholar)

Description : Assertion :- In a redox reaction, the oxidation number of the oxidant decreases while that of reductant increases. Reason :- Oxidant gains electron(s)

Last Answer : Assertion :- In a redox reaction, the oxidation number of the oxidant decreases while that of reductant ... D. If both Assertion & Reason are False.

Description : Assertion : In the reaction, `(1)/(2)O_(2)+F_(2)rarrOF_(2)` Fluorine is oxidant. Reason :- Fluorine cannot show positive oxidation state.

Last Answer : Assertion : In the reaction, `(1)/(2)O_(2)+F_(2)rarrOF_(2)` Fluorine is oxidant. Reason :- ... is False. D. If both Assertion & Reason are False.

Description : In the course of a chemical reaction an oxidant -

Last Answer : In the course of a chemical reaction an oxidant - A. Loses electron B. Gain electron C. Both ... and gain electrons D. Electron change does not occur

Description : `HNO_(2)` acts as an oxidant with which one of the following reagent :-

Last Answer : `HNO_(2)` acts as an oxidant with which one of the following reagent :- A. `KMnO_(4)` B. `H_(2)S` C. `K_(2)Cr_(2)O_(7)` D. `Br_(2)`

Description : What will be n-factor for `Ba(MnO_(4))_(2)` in acidic medium? (Where it behaves as oxidant)

Last Answer : What will be n-factor for `Ba(MnO_(4))_(2)` in acidic medium? (Where it behaves as oxidant) A. 5 B. 10 C. 6 D. 3

Description : Freon is used as - (1) Oxidant (2) Refrigerant (3) Catalyst (4) Both (1) and (2)

Last Answer : (2) Refrigerant Explanation: Freon uses for a number of halocarbon products. They are stable, nonflammable, moderately toxic gases or liquids which have typically been used as refrigerants and as aerosol propellants.

Description : Drinking soda is – (1) Alkaline (2) Acidic (3) Neutral (4) Oxidant

Last Answer : (2) Acidic Explanation: A soft drink, coke, soda pop, fizzy drink, tonic, .seltzer, mineral, sparkling water or carbonated beverage) is a beverage that typically contains water (often, but not ... other ingredients. Soft drinks are called "soft" in contrast to "hard drinks" (alcoholic beverages).

Description : Drinking soda is (1) Alkaline (2) Acidic (3) Neutral (4) Oxidant

Last Answer : Acidic

Description : Non steroidal anti inflammatory drugs, such as aspirin act by inhibiting the activity of the enzyme: (A) Lipoxygenase (B) Cyclooxygenase (C) Phospholipase A2 (D) Lipoprotein lipase

Last Answer : Answer : B

Description : Which is the structure act as sound receptor in cockroach :-

Last Answer : Which is the structure act as sound receptor in cockroach :- A. Anal style B. Anal cerci C. Antenna D. Both (2) and (3)

Description : Following drugs act on imidazoline receptor (a) Moxonidine (b) Dexmedetomidine (c) Tizanidine (d) All of the above

Last Answer : Ans: A

Description : Which statement is NOT true about steroid hormones? A) They include hormones such as estrogen. B) They do not bind to cell surface receptors. C) The hormone-receptor complex can enter the ... complex can bind to chromatin. E) Steroid hormones act faster than non-steroid (peptide) hormones.

Last Answer : E) Steroid hormones act faster than non-steroid (peptide) hormones.

Description : The mechanism of action of barbiturates differs from that of benzodiazepines in that they: A. Do not affect the GABA-benzodiazepine receptor-chloride channel complex B. Act as inverse agonists at the ... without affecting its life time D. Have both GABA-facilitatory as well as GABA-mimetic actions

Last Answer : D. Have both GABA-facilitatory as well as GABA-mimetic actions

Description : What is true in relation to drug receptors: A. All drugs act through specific receptors B. All drug receptors are located on the surface of the target cells C. Agonists induce a conformational change in the receptor D. Partial agonists have low affinity for the receptor

Last Answer : C. Agonists induce a conformational change in the receptoR

Description : What is true in relation to drug receptors: A. All drugs act through specific receptors B. All drug receptors are located on the surface of the target cells C. Agonists induce a conformational change in the receptor D. Partial agonists have low affinity for the receptor

Last Answer : C. Agonists induce a conformational change in the receptor

Description : You are given a tissue with its potential for differentiation in an artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as roots? ... gibberellin (b) Auxin and cytokinin (c) Auxin and abscisic acid (d) Gibberellin and abscisic acid

Last Answer : (b) Auxin and cytokinin

Description : Fibronectin has binding sites for all of the following except (A) Glycophorin (B) Collagen (C) Heparin (D) Integrin receptor

Last Answer : Answer : C

Description : The protein IRS-1 is phosphorylated by (A) Protein kinase A (B) Protein kinase C (C) Tyrosine kinase activity of insulin receptor (D) Tyrosine kinase activity of IGF-1 receptor

Last Answer : Answer : B

Description : Insulin receptor is made up of (A) One α-and one β-subunit (B) Two α-and two β-subunit (C) Two, α two β-and two γ-subunit (D) One α, one β-one γ-and one δ-subunit

Last Answer : Answer : B