Enzyme Extraction And Isolation(Enzyme Technology ) Questions and Answers
Question 1. Which of the following is the best method for isolating enzymes from cell free extract?
pH treatment
Temperature treatment
Chemical treatment
Osmotic shock
Explanation:-
Answer: Option C. -> Chemical treatment Answer: (c).Chemical treatment
Question 2. Which of the following chemical is not used to isolate enzymes from cell free extract?
Polyethyleneimine
Polyvinylpyrrolidone
EDTA
Magnesium chloride
Explanation:-
Answer: Option C. -> EDTA Answer: (c).EDTA
Question 3. Which of the following methods cannot be used to determine the molecular weight of enzymes?
Mass spectrometry
Gel filtration
Biosensors
Ultracentrifugation
Explanation:-
Answer: Option D. -> Ultracentrifugation Answer: (d).Ultracentrifugation
Question 4. __________ is a compound which is frequently used for DNA removal.
1.4% buffered sucrose
Protamine sulphate
Sodium hydroxide
Lysozyme
Explanation:-
Answer: Option B. -> Protamine sulphate Answer: (b).Protamine sulphate
Question 5. Cetyl trimethyl ammonium bromide is a cationic detergent.
True
False
May be True or False
Can't say
Explanation:-
Answer: Option A. -> True Answer: (a).True
Question 6. Gram positive bacteria are highly susceptible to lysozyme treatment.
True
False
May be True or False
Can't say
Explanation:-
Answer: Option A. -> True Answer: (a).True
Question 7. In ________ treatment, produced basic radicals mediate a nucleophilic attack on compounds of cell wall on membrane leading to destabilization and fragmentation of membrane followed by release of enzymes.
EDTA
Osmotic shock
Alkali
Detergent
Explanation:-
Answer: Option C. -> Alkali Answer: (c).Alkali
Question 8. Which of the following is not a technique for the extraction of enzymes by chemical methods?
Alkali treatment
Osmotic shock
Detergent treatment
Homogenization
Explanation:-
Answer: Option D. -> Homogenization Answer: (d).Homogenization
Question 9. In ___________ treatment, certain molecules interact through ionic or Vander wall forces which leads to solubilization of phospholipids and lipoprotein which in turn, increases membrane permeability directing to cell lysis.
Lysozyme
EDTA
Detergent
NaoH
Explanation:-
Answer: Option C. -> Detergent Answer: (c).Detergent
Question 10. ____________ is an enzyme, which is highly produced by egg white and lachrymal glands.
Amylases
Lysozyme
Invertase
Protease
Explanation:-
Answer: Option B. -> Lysozyme Answer: (b).Lysozyme