Description : Retinoic acid is involved in the synthesis of (A) Rhodopsin (B) Iodopsin (C) Porphyrinopsin (D) Glycoproteins
Last Answer : Answer : D
Description : Retinal is a component of (A) Iodopsin (B) Rhodopsin (C) Cardiolipin (D) Glycoproteins
Last Answer : Answer : B
Description : On exposure to light rhodopsin forms (A) All trans-retinal (B) Cis-retinal (C) Retinol (D) Retinoic acid
Last Answer : Answer : A
Description : The pigment which gives colour to the human skin is – (1) Melanin (2) Rhodopsin (3) Iodopsin (4) Anthocyanin
Last Answer : (1) Melanin Explanation: Human skin color is primarily due to the presence of melanin in the skin. Skin color ranges from almost black to white with a pinkish tinge due to blood vessels underneath. In animals melanin pigments are derivatives of the amino acid tyrosine.
Description : The ability of the eye to see in the dark, is due to the production of a purple pigment known as (1) Carotene (2) Rhodopsin (3)Iodopsin (4) Retinene
Last Answer : (4) Retinene Explanation: Retinene-1 is better known as retinaldehyde or simply retinal and is fundamental in the transduction of light into visual signals in the photoreceptor level of the retina (known as the visual cycle). Retinene-2 is more formally known as dehydroretinaldehyde.
Description : The ability of the Eye to see in the dark, is due to the production of a purple pigment known as----? A. Carotene B. Rhodopsin C. Iodopsin D. Retinene (Answer)
Last Answer : D. Retinene (Answer)
Description : Which one of the following is the correct difference between rod cells and cone cells of our retina? Rod cells Cone cells (a) Overall Vision in poor Colour vision function light and detailed ... of retina all over retina (c) Visual acuity High Low (d) Visual pigment Iodopsin Rhodopsin contained
Last Answer : (a) Overall Vision in poor Colour vision function
Description : The pigment which gives colour to the human skin is (1) Melanin (2) Rhodopsin (3) Iodopsin (4) Anthocyanin
Last Answer : Melanin
Description : The ability of the eye to see in the dark, is due to the production of a purple pigment known as (1) Carotene (2) Rhodopsin (3) Iodopsin (4) Retinene
Last Answer : Retinene
Description : Amanitin the mushroom poison inhibits (A) Glycoprotein synthesis (B) ATP synthesis (C) DNA synthesis (D) mRNA synthesis
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 can (A) Act as a photo receptor (B) Support growth and differentiation (C) Act as an anti-oxidant (D) None of these
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
Description : Anti-oxidant activity is present in (A) β-Carotene (B) Retinol (C) Retinoic acid (D) All 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 : 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.
Last Answer : (A) β-Carotene
Description : In what vitamin would retinoic acid be found?
Last Answer : ANSWER: VITAMIN A
Description : The common features of introns include all the following except (A) The base sequence begins with GU (B) The base sequence ends with AG (C) The terminal AG sequence is preceded by a purine rich tract of ten nucleotides (D) An adenosine residue in branch site participates in splicing
Description : A substance which participates readily in both acid-base and oxidation-reduction reactions is:
Last Answer : A substance which participates readily in both acid-base and oxidation-reduction reactions is: A. `Na_(2) CO_(3)` B ... KMnO_(4)` D. `H_(2)C_(2)O_(4)`
Description : The Golgi complex participates in (a) fatty acid breakdown (b) formation of secretory vesicles (c) respiration in bacteria (d) activation of amino acid
Last Answer : b) formation of secretory vesicles
Description : The Golgi complex participates in (1) Fatty acid breakdown (2) Formation of secretory vesicles (3) Respiration in bacteria (4) Activation of amino acid
Last Answer : (2) Formation of secretory vesicles
Description : All the following statements about fibronectin are true except (A) It is glycoprotein (B) It is a triple helix (C) It is present in extra cellular matrix (D) It binds with integrin receptors of cell
Description : TSH hormone biochemically is a (A) Protein (B) Fat (C) Glycoprotein (D) Carbohydrate 232 MCQs IN BIOCHEMISTRY
Description : cAMP is so called because it is formed during (A) TCA cycle (B) Urea cycle (C) Rhodopsin cycle (D) It has a cyclic structure
Description : All the following statements about TSH are true except (A) It is a glycoprotein (B) It is made up of α- and β-subunits (C) Receptor recognition involves both the subunits (D) Its subunit is identical with those of FSH and LH
Description : Intrinsic factor of castle is (A) Vitamin B12 (B) Glycoprotein (C) R-proteins (D) Sigma protein
Description : Extrinsic factor of castle is (A) Vitamin B12 (B) Glycoprotein (C) R-proteins (D) Sigma protein
Description : Retina contains this photo sensitive pigment. (A) Rhodopsin (B) Opsin (C) Retinol (D) Malanin
Description : Which of the following statements regarding Vitamin A is true? (A) It is not an essential Vitamin (B) It is related to tocopherol (C) It is a component of rhodopsin (D) It is also known as Opsin
Description : Intrinsic factor of castle is (A) Vitamin B12 (B) Glycoprotein (C) R-Proteins (D) Sigma protein
Description : Extrinsic factor of castle is (A) Vitamin B12 (B) Glycoprotein (C) R-Proteins (D) Sigma protein VITAMINS 127
Description : Retina contains this photosensitive pigment: (A) Rhodopsin (B) Opsin (C) Retinol (D) Melanin
Description : The non-protein part of rhodopsin is (A) Retinal (B) Retinol (C) Carotene (D) Repsin
Description : Rod cells possess a trans-membrane protein which is (A) Adenylate cyclase (B) Transducin (C) Rhodopsin (D) B as well as C
Description : Rhodopsin contains opsin and (A) 11-cis-retinal (B) 11-trans-retinal (C) All-cis-retinal (D) All trans-retinal
Description : Chemically, Extrinsic Factor of Castle is a (A) Mucoprotein (B) Glycoprotein (C) Mucopolysaccharide (D) Cyanocobalaminm
Description : Intrinsic factor is chemically a (A) Protein (B) Glycoprotein (C) Mucopolysaccaride (D) Peptide
Description : Non-protein part of rhodopsin is (A) Retinal (B) Retinol (C) Carotene (D) Repsin
Description : Lecithins combine with protein to form (A) Phosphoprotein (B) Mucoprotein (C) Lipoprotein (D) Glycoprotein
Description : CD 4 is a transmembrane glycoprotein present in (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells
Description : CD 8 is a transmembrane glycoprotein present in (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells
Description : Casein, the milk protein is (A) Nucleoprotein (B) Chromoprotein (C) Phosphoprotein (D) Glycoprotein
Description : What is the difference between glycoprotein and mucoprotein?
Last Answer : If the carbohydrate content is less than 10%, it is called a glycoprotein. If the carbohydrate content is more than 10% it is a mucoprotein.
Description : Which of the following is an adhesion glycoprotein? A. Fibronectin. B. Tenascin. C. Laminin. D. Hyaluronic acid. E. Collagen type IV.
Last Answer : Answer: ABC DISCUSSION: Cell adhesion glycoproteins such as fibronectin, vitronectin, laminin, and tenascin provide a railroad track to facilitate epithelial and mesenchymal cell migration over the wound ... , and collagen type IV is a protein that is a crucial component of basement membrane
Description : Vitamin B12: a. is essential for the metabolism of folic acid in the humans b. is attached to a glycoprotein in the circulation c. its deficiency is characterized by hypersegmentation of the neutrophils d. all above
Last Answer : all above
Description : Weakly acidic drugs: A. Are bound primarily to α1 acid glycoprotein in plasma B. Are excreted faster in alkaline urine C. Are highly ionized in the gastric juice D. Do not cross blood-brain barrier
Last Answer : B. Are excreted faster in alkaline urine
Description : What is the name of the system that participates in digestion ?
Last Answer : The system that takes part in digestion is called digestive system.