⚗️ Biochemical Engineering Solved MCQs with Answers

Practice 513 approved ⚗️ Biochemical Engineering questions with verified answers from the 🧬 Medical Science subject for Pakistan exams.

513 solved MCQs

In a fluidized bed reactor, the function of the disengagement zone is toAnswer: All of these Saccharomyces cerevisiae produces high biomass yields at low glucose concentrations and high dissolved oxygen concentrations. Which of the following should be followed for maximizing its biomass productivity?Answer: Fed batch fermenter On a glucose medium, the growth of an organism is characterized by the following Monod model and stoichiometric parameters μₘ = 0.3 h⁻¹, Kₛ =0.05 g.l⁻¹ and Yₓₛ = 0.3 g.g⁻¹ When this organism is grown in a 2 litre continuous on a medium containing 10 g.l⁻¹ of glucose added at 1 l.h⁻¹, the steady state concentration of biomass in the reactor will beAnswer: 0 g.l⁻¹ β-amylase isAnswer: Both (b) and (c) Juice clarification extraction is facilitated by usingAnswer: Cellulases Lysozyme is naturally present inAnswer: All of these Enzymes act as antimicrobialsAnswer: All of these Trichoderma β-glucanase is reportedAnswer: To stabilize mashing The bitter taste of the high protein materials is reduced by usingAnswer: Protease Sulphydryl oxidase is used forAnswer: UHT milk off flavour removal Sulphydryl oxidase is used forAnswer: UHT milk off flavour removal α-amylase is an endo enzyme which requiresAnswer: Ca Liquefaction of starch to dextrin is carried out byAnswer: α-amylase Which is true about rennet?Answer: Both (a) and (b) Milk digestibility is improved by usingAnswer: Lactase Which of the following mainly serve to convert starch into high fructose corn syrup (HFCS)?Answer: All of these LysozymeAnswer: Catalyses hydrolysis of β-1-4 linkages between N-acetyl muranic acid and N-acetyl glucosamine in peptideoglycan Hersperidinase is used forAnswer: Juice clarification Which of the following metallic ion is there in ascorbic acid oxidase?Answer: Cu Which of the enzyme combination is commercially used for the removal of oxygen?Answer: Glucose oxidase-catalase The enzyme used to reduce bitterness of grapes commonly containsAnswer: Both (a) and (b) Citrus juice debittering can be carried out usingAnswer: Limoninase Which of the following enzyme is responsible for causing vitamin B deficiency disease beriberi?Answer: Thiaminase Soya off flavour removal may be achieved usingAnswer: Aldehyde oxidase The reduction in off flavour of beer is practiced throughAnswer: Diacetyl reductase Discoloration can be achieved by usingAnswer: Anthocyanase The prosthetic group present in phenolase enzyme isAnswer: Cu Enzymes degrade, alter or synthesize a food component throughAnswer: All of these The enzyme β-galactosidase is also known asAnswer: Both (a) and (b) Chymosin hydrolyses the bond betweenAnswer: Phenyl alanine and methonine