TS EAPCET (Engineering) Biomolecules — practice questions
88 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice TS EAPCET (Engineering) Biomolecules in the app →Carbohydrates that cannot be hydrolyzed to simpler sugar units are:The molecular formula of glucose is:Building block (monomer) of starch:A protein's primary structure refers to:Nucleic acids are composed of nucleotides, each containing:Amino acids exist predominantly as zwitterions (⁺NH₃-CHR-COO⁻) at:Number of H-bonds in A-T vs G-C base pair:D-glucose and D-mannose are epimers. Differ in configuration at:Vitamin B12 contains which metal at its center?Which carbohydrate does not fit the general formula Cx(H2O)y?Which compound fits the formula Cx(H2O)y but is not a carbohydrate?Why are polysaccharides also called non-sugars?Bromine water oxidises glucose to gluconic acid. This shows glucose hasNitric acid oxidises glucose to saccharic acid. This revealsWhat is the melting point of the α-form of glucose?The OH group on which carbon of glucose forms its six-membered ring?The α and β anomers of glucose differ in configuration at which carbon?In fructose, the ketonic group is present at which carbon number?In sucrose, the glycosidic bond joins which carbon atoms?Invert sugar is laevorotatory because fructose has a specific rotation ofBranching in amylopectin occurs through which linkage?Glycogen is called animal starch because its structure resemblesThe amino acid glycine is named after which property?Which of these is a globular protein?In an α-helix, the polypeptide chain twists into aThe original term vitamine joined the word vital withWhich water soluble vitamin can be stored in the human body?A nucleoside forms when a base attaches to which position of the sugar?In which year did Har Gobind Khorana share the Nobel Prize?Who shared the 1962 Nobel prize with Watson and Crick for DNA structure?Thyroxine is an iodinated derivative of which amino acid?Which hormone tends to raise the glucose level in blood?Which adrenal cortex hormones control water and salt excretion by the kidney?D and L notation in sugars relates configuration to which compound?Which fact about glucose cannot be explained by its open chain structure?Boiling sucrose with dilute HCl in alcoholic solution gives which products?Commercially, glucose is made by boiling starch under pressure with which acid?Despite its aldehyde group, glucose fails which of these tests?Which compound gives its name to the six-membered ring form of glucose?At which carbon atom does fructose carry its ketonic group?How many atoms make up the ring in the cyclic furanose form of fructose?What is the linkage between two monosaccharides through an oxygen atom called?Sucrose hydrolysis changes the sign of rotation from dextro to laevo. The product is called what?Which disaccharide gives two molecules of glucose alone on hydrolysis?Which disaccharide is commonly known as milk sugar?In lactose, C1 of galactose is linked to which carbon of glucose?Which component of starch is water soluble and unbranched?Which polysaccharide is the predominant constituent of plant cell walls?Which amino acid is named from a Greek word for sweet taste?What makes an amino acid essential?An amino acid with more carboxyl groups than amino groups is classified as what?Which naturally occurring alpha-amino acid is optically inactive?The peptide linkage is chemically which functional group?How many amino acids does insulin contain?A polypeptide is called a protein when its molecular mass exceeds roughly what?Which fibrous protein is present in hair and wool?Which description fits globular proteins such as albumins?Which protein structure level stays intact during denaturation?Almost all enzymes belong to which class of biomolecules?Which enzyme catalyses the hydrolysis of maltose into glucose?What is the activation energy for sucrose hydrolysis when catalysed by sucrase?Why was the name vitamine originally coined?Fragile red blood cells and muscular weakness point to a lack of which vitamin?Which base in RNA takes the place of thymine found in DNA?In the DNA double helix, adenine pairs through hydrogen bonds with which base?Which functional group in open-chain glucose makes it a reducing sugar?Glucose, having six carbons and an aldehyde group, is classed as which type of sugar?What is the common clinical or nutritional name for D-glucose?In aqueous solution, what is the main ring form in which glucose exists?Ring closure between C-1 and C-5 of glucose gives a six-membered ring named after which compound?The slow change in optical rotation of a freshly dissolved glucose anomer is called what?What is the equilibrium specific rotation of D-glucose after mutarotation is complete?Pure alpha-D-glucose has a specific rotation of which value before mutarotation starts?What does the D prefix in D-glucose refer to?Which proteinogenic amino acid has no stereogenic alpha carbon?Which configuration do all chiral amino acids found in proteins have?At near-neutral pH in water, amino acids exist mainly in which form?In strongly acidic solution below pH 3, a typical amino acid carries what structure?Which was the first amino acid to be discovered, isolated from asparagus in 1806?Which scientists independently proposed in 1902 that proteins are formed from amino acids joined by bonds?How many vitamins are recognised as essential for humans?Deficiency of which vitamin causes scurvy?Beriberi results from a lack of which vitamin?Pellagra is caused by deficiency of which vitamin?Rickets in children is linked to deficiency of which vitamin?Who coined the word vitamine from vital amine in 1912?Which water-soluble vitamins are generally readily excreted and not stored?What is the molar mass of anhydrous D-glucose in g/mol?