Description : Which of the following contains a deoxy sugar? (A) RNA (B) DNA (C) ATP (D) UTP
Last Answer : Answer : B
Description : All of the following statements about proline are true except (A) It is an imino acid (B) It can be synthesized from glutamate (C) It can be catabolised to glutamate (D) Free proline can be hydroxylated to hydroxyproline
Last Answer : Answer : D
Description : Give an example of an imino acid.
Last Answer : Proline.
Description : Thiols are alcohol analogs in which the oxygen has been replaced by sulfur (e.g., CH3SH). Given the fact that the S-H bond is less polar than the O-H bond, which of the following ... (c) Hydrogen bonding forces would be the same. (d) No comparison can be made without additional information
Last Answer : Hydrogen bonding forces are weaker in thiols.
Description : What compound is formed when all the hydrogen of an a has been replaced by a metal?
Last Answer : ANSWER: A SALT
Description : Which of the following are nucleo proteins? (A) Protamines (B) Histones (C) Deoxy and Ribo nucleo proteins (D) All of these
Description : Which of the following statements is correct? (A) a nucleo protein usually contain deoxy sugars of the hexose type (B) Nucleoproteins are usually absent from the cytoplasm (C) Nucleoproteins usually are present in the nucleus only (D) Nucleoproteins usually occur in the nucleus and cytoplasm
Description : Reduction of ribonucleotide diphosphates (NDPs) to their corresponding deoxy ribonucleotide diphosphates (dNDPs) involves (A) FMN (B) FAD (C) NAD (D) NADPH
Description : Reduction of D-ribonucleotides to D-deoxy ribonucleotides in prokaryotes requires (A) 5, 6 dimethyl benzimindazole cobamide (B) Thiredoxin (C) Tetra hydrobiopterin (D) Tetra hydrofolate VITAMINS 131
Last Answer : Answer : A
Description : Name some deoxy sugars.
Last Answer : Deoxy ribose, fucose (deoxy galactose).
Description : how does carbon, hydrogen, and oxygen from sugar combine with other elements to make amino acids
Last Answer : I would suggest that you read your text book as this is not a question that can be answered in a line or 2 or you can read here: http://www.chemistryland.com/ElementarySchool/BuildingBlocks/BuildingOrganic.htm
Description : Which of the following is not correct concerning substitution and elimination reactions of alkyl halides? (a) The electrophile replaces the leaving group. (b) Compounds containing electron-donating groups bonded to an ... replaced by another atom or group in substitution reactions. (d) (a) and (b)
Last Answer : (a) and (b)
Description : Give the names of the following functional groups: (i) —OH (ii) —COOH -Chemistry
Last Answer : (i) Alcohol group (ii) Carboxylic acid group
Description : The water-solubility of dyes can be increased by introducing (a) SO3Na groups (b) COOH groups (c) OH groups (d) All of these
Last Answer : All of these
Description : The concentraction of hydrogen ion (H+ )is denoted by pH.How do you denote concentration of hydrogen ion(OH)?
Last Answer : Ans:The concentration of hydrogen ion (OH) is denoted by poH.
Description : Which of the following statements defines culture? a) The learned patterns of behavior, beliefs, and values that can be attributed to a particular group of people. Included among ... . The classification of a group based upon certain distinctive characteristics describes the term ethnicity.
Last Answer : a) The learned patterns of behavior, beliefs, and values that can be attributed to a particular group of people. Included among characteristics that distinguish cultural groups are manner of dress, values, artifacts, and health beliefs and practices.
Description : 2-Amino 3-OH propanoic acid is (A) Glycine (B) Alanine (C) Valine (D) Serine
Description : One of the given example is an amino acid: (A) Oh-Lysine (B) Protein (C) Leucine (D) Serine
Description : The figure shows a hypothetical tetrapeptide portion of a protein with parts labelled A-D. Which one of the following options is correct? - HN - CH - CO - NH - CH - CO - NH - CH - CO - ... -terminal amino acid and D is N-terminal amino acid. (d) A is a sulphur containing amino acid methionine.
Last Answer : (a) D is the acidic amino acid-glutamic acid.
Description : The given diagrammatic OH OH HOCH O 2 X representation shows one of the categories of small molecular weight organic compounds in the living tissues. Identify the category shown and the one ... Component (a) Cholesterol Guanine (b) Amino acid NH2 (c) Nucleotide Adenine (d) Nucleoside Uracil
Last Answer : (d) Nucleoside Uracil
Description : Nutrasweet, the artificial sweetener, contains molecules in which of the following groups? w) carbohydrates x) lipids y) amino acids z) nucleic acids
Last Answer : ANSWER: C--AMINO ACIDS
Description : The suffix number in the names of prostaglandins gives the number of (A) OH groups (B) Double bonds (C) Acid groups (D) Ketoacids
Description : In glucose the orientation of the —H and —OH groups around the carbon atom 5 adjacent to the terminal primary alcohol carbon determines (A) D or L series (B) Dextro or levorotatory (C) α and β anomers (D) Epimers
Last Answer : A
Description : In glucose the orientation of the —H and —OH groups around the carbon atom 5 adjacent to the terminal primary alcohol carbon determines (A) D or L series (B) Dextro or levorotatory (C) and anomers (D) Epimers
Last Answer : (A) D or L series
Description : The term ‘Cynogenesis’ describes the release of (a) hydrogen cyanide (HCN) (b) hydrochloric acid (HCl) (c) hydrogen peroxide (H202) (d) hydrogen sulphide (H2S)
Last Answer : Ans:(a)
Description : Which of the following describes the major difference between bryophytes (pron: bry-oh-fites) and tracheophytes (pron: tray-key-o-fites)? a) tracheophytes can survive on land b) ... inside fruits c) tracheophytes can make their own food d) tracheophytes have vessels to transport materials
Last Answer : ANSWER: D -- TRACHEOPHYTES HAVE VESSELS TO TRANSPORT MATERIALS
Description : Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by (a) base-sugar-phosphate (b) base-sugar-OH (c) (base-sugar-phosphate)n (d) sugar-phosphate.
Last Answer : (a) base-sugar-phosphate
Description : Hydrogen peroxide in its reaction with `KIO_(4)` and `NH_(2)OH` respectively, is acting as a
Last Answer : Hydrogen peroxide in its reaction with `KIO_(4)` and `NH_(2)OH` respectively, is acting ... agent, oxidising agent D. oxidising agent, reducing agent
Description : Which of the following statements best describes the meaning of a “glycoside”? (a) It is the mirror image of a sugar. (b) It is the hemiacetal of a sugar. (c) It is the acetal of a sugar. (d) It is the enantiomer of a sugar
Last Answer : It is the acetal of a sugar.
Description : Which of the following statements best describes the meaning of mutarotation ? (a) a rapid exchange between the α and β forms of diastereomeric sugars (b) a rapid exchange between the D ... between hydrogen and deuterated hydrogen (d) a slow change in optical rotation to reach an equilibrium value
Last Answer : a slow change in optical rotation to reach an equilibrium value
Description : Which of the following describes the side chain for Valine? (a) ethyl group (b) hydrogen (c) isobutyl group (d) isopropyl group
Last Answer : isopropyl group
Description : Which of the following describes the side chain for Alanine? (a) hydrogen (b) ethyl group (c) methyl group (d) isopropyl group
Last Answer : methyl group
Description : Which of the following statements describes the first step in the mechanism of the aldol condensation? (a) An alpha hydrogen is abstracted by the base to form an enolate anion. (b) A nucleophilic base attacks ... by the base ion. (d) The alpha hydrogen is abstracted by an acid to the enolate anion.
Last Answer : An alpha hydrogen is abstracted by the base to form an enolate anion
Description : Which among the following is a carbohydrate? (1) Nylon (2) Cane-sugar (3) Turpentine (4) Hydrogen peroxide
Last Answer : (2) Cane-sugar Explanation: Cane-sugar is carbohydrate and as this name implies, is composed of carbon, hydrogen and oxygen. it is a source of extracting sugar. There are various ... sugar most customarily used as food is sucrose, a disaccharide. Other disaccharides include maltose and lactose.
Description : The atoms in sugar are bound by what type of bond? w) ionic x) hydrogen y) covalent z) van der Waals
Last Answer : ANSWER: Y -- COVALENT
Description : Which among the following is a carbohydrate ? (1) Nylon (2) Cane-sugar (3) Turpentine (4) Hydrogen peroxide
Last Answer : Cane-sugar
Description : A compound with molecular mass 180 is acylated with `CH_(3)COCl` to get a compound with molecular mass 390. the number of amino groups present per mol
Last Answer : A compound with molecular mass 180 is acylated with `CH_(3)COCl` to get a compound with molecular mass 390. the ... compounds is A. 2 B. 5 C. 4 D. 6
Description : The active site of an enzyme is formed by a few of the enzymes: (A) R groups of the amino acids (B) Amino groups of the amino acids (C) Carboxyl group of the amino acids (D) Exposed sulfur bonds
Last Answer : Answer : C
Description : The amino acids in which the R groups have a net positive charge at pH 7.0 are (A) Lysine, Arginine, Histidine (B) Lysine, Aspargine (C) Histidine, Aspargine (D) Glutamine, Arginine
Description : Which one of the following statements concerning glutamine is correct? (A) Contains three tetratable groups (B) Is classified as an acidic amino acid (C) Contains an amide group (D) Migrates to the cathode during electrophoresis at pH 7.0
Description : The ionizable groups of amino acids are at least. (A) 1 (B) 2 (C) 3 (D) 4
Description : Two amino groups are present in (A) Leucine (B) Glutamate (C) Lysine (D) Threonine
Description : Amino acid with side chain containing basic groups is (A) 2-Amino 5-guanidovaleric acid (B) 2-Pyrrolidine carboxylic acid (C) 2-Amino 3-mercaptopropanoic acid (D) 2-Amino propanoic acid
Last Answer : (A) 2-Amino 5-guanidovaleric acid
Description : Tertiary structure of a protein describes (A) The order of amino acids (B) Location of disulphide bonds (C) Loop regions of proteins (D) The ways of protein folding
Description : How is the transport of a sugar/amino acid through a kidney epithelial cell different from the mechanism of glucose transport in a liver cell?
Last Answer : Just did a quick google and it looks like it’s active transport in the kidneys and passive transport in the liver. I’m always a little wary of using wikepedia as an expert source, but here’s some details. http://en.wikipedia.org/wiki/Glucose_transporter
Description : Which is a basic unit of a sugar molecule monosaccharide amino acid fatty acid nucleotide?
Last Answer : Monosaccharide
Description : Which of the following gives a positive Ninhydrin test? (A) Reducing sugar (B) Triglycerides (C) α-amino acids (D) Phospholipids
Description : During deficiency of thiamine the concentration of the following compound rises in blood and intracellular fluid: (A) Glycogen (B) Sugar (C) Amino acids (D) Pyruvic acid