Description : Hormones are composed from many classes of molecules. As far as our present knowledge extends, hormones are NOT found in which of the following categories of substances: a) proteins b) peptides c) nucleic acids d) steroids
Last Answer : ANSWER: C -- NUCLEIC ACIDS
Description : The chemicals released by one species of animals in order to attract the other members of the same species are - (1) Hormones (2) Nucleic acids (3) Pheromones (4) Steroids
Last Answer : (3) Pheromones Explanation: A pheromone is a secreted or excreted chemical factor that triggers a social response in members of the same species. Pheromones are chemicals capable of acting ... others that affect behavior or physiology. Their use among insects has been particularly well documented.
Description : The chemicals released by one species of animals in order to attract the other members of the same species are (1) Hormones (2) Nucleic acids (3) Pheromones (4) Steroids
Last Answer : Pheromones
Description : Location and secretion of Leydig’s cells are (a) liver-cholesterol (b) ovary-estrogen (c) testis-testosterone (d) pancreas-glucagon.
Last Answer : (c) testis-testosterone
Description : Occurrence of Leydig’s cells and their secretion is (a) ovary and estrogen (b) liver and cholesterol (c) pancreas and glucagon (d) testis and testosterone.
Last Answer : d) testis and testosterone.
Description : The myofilaments of muscles consist primarily of two proteins. These two proteins are called: a) actin and myosin b) progesterone and testosterone c) progesterone and estrogen
Last Answer : ANSWER: A -- ACTIN AND MYOSIN
Description : Upon hydrolysis, proteins give (a) Amino acids (b) Hydroxy acids (c) Fatty acids (d) Alcohols
Last Answer : Amino acids
Description : Choose the correct statement about anabolic steroids: A. They are testosterone congeners having anabolic but no androgenic activity B. They are androgens with relatively selective anabolic activity C. They are suitable for long-term therapy in children D. Both ‘B’ and ‘C’ are correct
Last Answer : B. They are androgens with relatively selective anabolic activity
Description : What about some bacteria is important to important to humans in terms of our being able to make proteins and nucleic acids from the foods we eat?
Last Answer : Feel Free to Answer
Description : Nucleic acids can be detected by means of their absorption maxima near 260 nm. Their absorption in this range is due to (A) Proteins (B) Purines and pyrimidines (C) Ribose (D) Deoxyribose
Last Answer : Answer : B
Description : Maximum energy produced by (A) Fats (B) Carbohydrates (C) Proteins (D) Nucleic acids
Last Answer : Answer : A
Description : For biosynthesis of proteins (A) Amino acids only are required (B) Amino acids and nucleic acids only are required (C) Amino acid, nucleic acids and ATP only are required (D) Amino acids, nucleic acids, ATP, GTP, enzymes and activators are required
Last Answer : Answer : D
Description : Enzymes are (a) Carbohydrates (b) Proteins (c) Fatty acids (d) Nucleic acids
Last Answer : Ans:(b)
Description : Which of the following natural bio polymers are formed as a result of polymerisation of amino-acids? (A) Starch (B) Cellulose (C) Proteins (D) Nucleic acids
Last Answer : (C) Proteins
Description : Nissl’s bodies are mainly composed of (a) proteins and lipids (b) DNA and RNA (c) nucleic acids and SER (d) free ribosomes and RER.
Last Answer : (d) free ribosomes and RER.
Description : The essential chemical components of many coenzymes are (a) carbohydrates (b) vitamins (c) proteins (d) nucleic acids.
Last Answer : (b) vitamins
Description : Which of the following are not polymeric? (a) Proteins (b) Polysaccharides (c) Lipids (d) Nucleic acids
Last Answer : (c) Lipids
Description : Which statement is wrong for viruses? (a) All are parasites. (b) All of them have helical symmetry. (c) They have ability to synthesize nucleic acids and proteins. (d) Antibiotics have no effect on them
Last Answer : (b) All of them have helical symmetry
Description : Hdrogen peroxide a. Is An Effective Sterilant. b. Cross-Links Proteins And Nucleic Acids. c. Can Emulsify And Solubilize Pathogens. d. Is Not Recommended For Use On Open Wounds.
Last Answer : a. Is An Effective Sterilant.
Description : Which of the following are not polymeric ? (1) Proteins (2) Polysaccharides (3) Lipids (4) Nucleic acids
Last Answer : (3) Lipids
Description : Nissl bodies are mainly composed of (1) Proteins and lipids (2) DNA and RNA (3) Nucleic acids and SER (4) Free ribosomes and RER
Last Answer : (4) Free ribosomes and RER
Description : Name the organelle that contains high levels of hydrolases and is responsible for digestion of proteins, sugars, nucleic acids and lipids.
Last Answer : Lysosomes
Description : 100. Which statement is wrong for viruses ? (1) Antibiotics have no effect on them (2) All are parasites (3) All of them have helical symmetry (4) They have ability to synthesize nucleic acids and proteins
Last Answer : All of them have helical symmetry
Description : 83. Which one of the following is wrong statement ? (1) Nitrosomonas and Nitrobacter are chemoautotrophs (2) Anabaena and Nostoc are capable of fixing nitrogen in free-living state also (3 ... living conditions (4) Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins
Last Answer : Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins
Description : In which of the following class of substances would WAX be found? w) carbohydrates x) lipids y) proteins z) nucleic acids
Last Answer : ANSWER: LIPIDS
Description : Peptide bonds are found in: a) carbohydrates b) lipids c) nucleic acids d) proteins
Last Answer : ANSWER: D -- PROTEINS
Description : Does nipple/aureola size in men have anything to do with estrogen/testosterone?
Last Answer : Well now that the original question has been ammended, my previous comment would be redundant. So, as Emily Litella used to say: …never mind… :)
Description : Estrogen and testosterone are steroid hormones, and most likely bind to
Last Answer : Estrogen and testosterone are steroid hormones, and most likely bind to A. Cytoplasmic receptors ... receptors D. G-protein liked membrane receptors
Description : Progesterone is transported in blood by (A) Transcortin (B) Sex hormone binding globulin (C) Albumin (D) Testosterone estrogen binding globulin
Description : Testosterone is transported in blood by (A) Transcortin (B) Testosterone binding globulin (C) Testosterone estrogen binding globulin (D) Albumin
Last Answer : Answer : C
Description : Which of the following hormones will allow us to react to emergency situations? A) estrogen B) progesterone C) testosterone D) cortisol E) norepinephrine
Last Answer : E) norepinephrine
Description : Cholesterol is an example of (a) Membrane lipids (b) Triglycerides (c) Steroids (d) Adipose tissue
Last Answer : The correct answer is (c) Steroids. Cholesterol is a type of steroid, which is a specific class of lipids. It is an essential molecule found in animal cell membranes and is involved in various ... is a type of lipid, it is not classified as a membrane lipid, triglyceride, or adipose tissue.
Description : CTP is required for the synthesis of (A) Fatty acids (B) Proteins (C) Phospholipids (D) Cholesterol
Description : Fluidity of membranes is increased by the following constituent except (A) Polyunsaturated fatty acids (B) Saturated fatty acids (C) Integral proteins (D) Cholesterol
Description : Enzymes belong to the category of (a) Proteins (b) Lipids (c) Carbohydrates (d) Steroids
Last Answer : Ans:(a)
Description : Enzymes are - (1) Steroids (2) Carbohydrates (3) Proteins (4) Lipids
Last Answer : (2) Carbohydrates Explanation: Enzymes are proteins that speed up chemical reactions in the cell. They are highly selective catalysts, greatly accelerating both the rate and specificity of metabolic reactions. Most enzymes are proteins, although some catalytic RNA molecules have been identified.
Last Answer : (3) Proteins Explanation: Enzymes are protein molecules in cells which work as catalysts. Most enzymes are proteins, although a few are catalytic RNA molecules; the latter are called ribozymes.
Description : Chemically hormones are (a) biogenic amines only (b) proteins, steroids and biogenic amines (c) proteins only (d) steroids only.
Last Answer : (b) proteins, steroids and biogenic amines
Description : Enzymes are (1) Steroids (2) Carbohydrates (3) Proteins (4) Lipids
Last Answer : Proteins
Description : In the biosynthesis of testosterone the rate limiting step is conversion of (A) Cholesterol to pregnenolone (B) Pregnenolone to progesterone (C) Progesterone to 17 α-hydroxy progesterone (D) 17 α-Hydroxy progesterone to androstenedione
Description : Prostaglandins are (A) C2 unsaturated acids (B) C27 saturated alcohols (C) C20 saturated acids (D) C27 saturated alcohols
Description : Esters of fatty acids with higher alcohols other than glycerol are said to be (A) Waxes (B) Fats (C) Both (A) and (B) (D) None of these
Description : Pick out the wrong statement. (A) Linear polymers are formed from bifunctional groups only and are normally thermoplastic (B) Cross-linked branched chain polymers are either elastometric or ... (D) Dibasic acids reacts with dihydric alcohols to give polyesters using addition polymerisation reaction
Last Answer : D) Dibasic acids reacts with dihydric alcohols to give polyesters using addition polymerisation reaction
Description : Fatty acids react with trihydric alcohols to form
Last Answer : glycerides.
Description : Esters can be formed by nucleophilic substitution reactions of : (a) carboxylic acids and alcohols ; acid-catalyzed (b) acid chlorides and alcohols (c) both of the above (d) neither of the above
Last Answer : both of the above
Description : The greater acidity of carboxylic acids compared to alcohols arises primarily from : (a) the electron-donating effect of the hydroxyl group (b) the electron-withdrawing effect of the carboxyl ... of α-hydrogens of carboxylic acids (d) the resonance stability associated with the carboxylate ion
Last Answer : the resonance stability associated with the carboxylate ion
Description : Aldehydes undergo oxidation with KMnO4/H+ to give (a) Alcohols (b) Acetals (c) Ketones (d) Acids
Last Answer : Acids
Description : Lucas test is used to determine the type of (a) alcohols (b) acids (c) amines (d) carbohydrates
Last Answer : alcohols
Description : Oil is a/an (A) Mixture of glycerides (B) Mixture of glycerides of fatty acids (C) Solid at normal temperature (D) Ester of alcohols other than glycerine
Last Answer : (B) Mixture of glycerides of fatty acids
Description : Wax is a (A) Mixture of glycerides (B) Mixture of esters of polyhydric alcohols excepting glycerine (C) Liquid at room temperature (D) Mixture of glycerides of fatty acids
Last Answer : (B) Mixture of esters of polyhydric alcohols excepting glycerine