CBSE Class 11 (Science) Biomolecules — practice questions
90 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 11 (Science) Biomolecules in the app →Biomacromolecules in the acid-insoluble pool typically have molecular weightWhich is an example of a secondary metabolite As per your syllabus, ?Grinding tissue in trichloroacetic acid and filtering separates molecules intoHaemoglobin is the textbook example of which level of protein structure?A peptide bond forms betweenEssential amino acids are those the bodyHumans can digest starch but not cellulose becauseIn DNA, the base pairing A-T and G-C reflects thatEach nucleotide in a nucleic acid containsEnzymes speed up reactions byA competitive inhibitor of an enzymeThe filtrate from strained, acid-ground tissue is called the what?What is the part of ground tissue left on the cheesecloth called?Which acid is used with a mortar and pestle to grind tissue for analysis?What does the ash left after fully burning a tissue contain?In an alpha-amino acid, the amino and acidic groups sit on which atom?Which group on the alpha carbon differs among amino acids?How many types of amino acids occur in proteins?Which amino acid has hydrogen as its R group?Which of these is an acidic amino acid?Lipids are generally insoluble in which solvent?How many carbon atoms does palmitic acid have, counting the carboxyl carbon?A saturated fatty acid is one that has what feature?Glycerol is chemically described as which compound?Fats and oils among glycerides are distinguished mainly by their what?Phospholipids such as lecithin are found in which structure?A nitrogen base attached to a sugar is called a what?What do you get when a phosphate is esterified to a nucleoside's sugar?Adenosine and uridine are examples of which class?Adenylic acid and cytidylic acid are examples of what?DNA and RNA are made up of which monomers only?Which two nitrogen bases are substituted purines?Which of these nitrogen bases is a pyrimidine?Alkaloids, flavonoids, rubber and antibiotics in plants and microbes are what?Morphine and codeine are secondary metabolites of which group?Abrin and ricin are examples of which secondary metabolite group?Carotenoids and anthocyanins are secondary metabolites that act as what?Rubber, gums and cellulose belong to which secondary metabolite group?Vinblastin and curcumin are secondary metabolites used as what?What range of molecular weights do compounds of the acid-soluble pool have?Which of these is found in the acid-insoluble fraction of a tissue?Micromolecules or simple biomolecules have molecular weight below what?The acid-soluble pool roughly represents which part of the cell?Which is the most abundant chemical in living organisms?Proteins are linear chains of amino acids joined by which bonds?Why is a protein called a heteropolymer?A homopolymer is a chain made of how many types of monomer?Which protein is the most abundant in the animal world?Cellulose is a homopolymer of which monosaccharide?Inulin is a polymer of which sugar?Starch is present in plants as what?Which polysaccharide is the storage form of energy in animals?What colour does starch give with iodine?Why can cellulose not hold iodine molecules like starch does?Plant cell walls are made mainly of which polysaccharide?The exoskeleton of arthropods contains which complex polysaccharide?Complex polysaccharides such as chitin are built from which units?Which set correctly lists the three components of a nucleotide?Which nucleic acid contains the sugar deoxyribose?The sequence of amino acids in a protein is its what?Which kind of helix is observed in proteins?Folding of a long protein chain upon itself gives which structure?The arrangement of subunits in a multi-chain protein is its what?Adult human haemoglobin is made of how many subunits?Nucleic acids that behave like enzymes are called what?What happens to ordinary enzymes at high temperature, unlike inorganic catalysts?By about how many times does carbonic anhydrase speed up its reaction?By a rule of thumb, how does rate change per 10 degree C rise?How many enzyme-catalysed steps convert glucose into pyruvic acid?What forms from pyruvic acid in skeletal muscle under anaerobic conditions?The same pathway in yeast fermentation yields which end product?The formation of an enzyme-substrate complex is described as what?The energy gap between substrate and transition state is called what?How do enzymes make a reaction faster?What are the temperature and pH of highest enzyme activity called?What does low temperature do to an enzyme?What is reached as substrate concentration rises and enzymes saturate?A competitive inhibitor closely resembles which molecule?Which compound competitively inhibits succinic dehydrogenase?Which enzyme class catalyses hydrolysis of ester and peptide bonds?Which enzyme class joins two compounds together?Which enzyme class removes groups leaving double bonds, without hydrolysis?Which enzyme class interconverts optical or positional isomers?The protein portion of a conjugate enzyme is known as the what?What is the prosthetic group of peroxidase and catalase?NAD and NADP contain which vitamin?Which metal ion is a cofactor for carboxypeptidase?Which four elements make up 96 percent of human body mass?How many amino acids are there per turn of an alpha helix?Which amino acid is coded by UGA in some proteins?