MDCAT BIOLOGY-Enzymes (SMART INSTITUTE)

02-An activating enzyme consisting of polypeptide chain and a co-factor is called:

03-Activators are usually derived from:

04-At a certain point where conversion of substrate/s into product/s is maximum, the enzyme/s would be:

05-A three dimensional cavity bearing a specific charge by which the enzyme reacts with its substrate is called:

06-Which step causes activation of catalytic site of an enzyme?

07-In a naturally occurring chemical reaction, all active sites are occupied, the rate of reaction would be:

08-Excessive increase in temperature of medium causes the enzyme molecule to be:

09-Inhibitors are chemically

10-Optimum temperature of enzymes present in human body is:

11-Inhibitors which block the enzyme by forming weak bond are called:

12-Malonic acid is an example of:

13-Coenzymes are closely related to:

14-The effect of reversible competitive inhibitor can be neutralized by increasing the concentration of

15-Function of succinic dehydrogenase is aided by:

16-Prosthetic groups are

17-Optimum pH value of pancreatic lipase:

18-ES complex is converted into product by:

19-It is an amino acid and also a part of phospholipid:

20-WOF properties of amino acids is affected by a change in pH?

21-Change in temperature from 30' C to 40' C in human body will cause:

22-Optimum pH of enterokinase is:

23-The rate of reaction will always be directly proportional to the concentration of enzyme, if

24-Enzymes belong to which class of proteins?

25-Apoenzyme is:

26-Optimum pH of salivary amylase is:

27-Allosteric enzymes have ................ Major sites.

28-Enzyme after catalysis detaches itself from the product:

29 .............. Forms weak linkages with enzymes and their effect can be neutralized completely or partly by an increase in the concentration of substrate.

30-The non protein part of enzyme which is covalently and permanently bonded is called:

31-Enzymes increase the rate of reaction by:

32-An enzyme and substrate reacts through a special feature or site present in enzyme:

33-If the detachable co-factor is inorganic ion, then it is designated as:

34-The type of inhibition in which inhibitor has no structural similarity to substrate and combine with enzyme at other than the active site is called:

35-The inhibitors that bind tightly and permanently to enzymes and destroy their globular structure and catalytic activity are:

36-Enzyme succinate dehydrogenase converts succinate into:

37-The view that active site of an enzyme is flexible and when a substrate combines with it, cause change in enzyme structure is known as:

38-The competitive inhibitors have structural similarity with:

39-Some enzymes require helper which is non-protein part for its efficient functioning that is called:

40-WOF is an example of competitive inhibitor?

41-An enzyme required Mg++ to catalyze the substrate. The Mg++ is best identified as:

42-According to .......... model, the active site of enzyme is modified as the substrate interact with enzyme.

43-All enzymes are ...............

44-The reactants on which enzyme work are:

45-WOF comprises of inorganic ions?

46-What is true about enzymes?

47-Modified form of lock and key model was proposed by:

48-The temperature that promotes the maximum activity of enzyme is referred as:

49-A molecule can bind to another site of the enzyme rather than the true active site is referred as:

50-The type of energy reduced by the enzymes for biological reactions to occur is called the:

51-What is common in both competitive and non-competitive inhibition?

52-A student of chemical engineering engulfed the toxic compound 'A' which was a potent inhibitor of certain enzyme. He was immediately brought to hospital where Dr. Injected intravenously substrate 'B' to minimize the toxic effect of compound 'A' . His life was saved from serious damages. The treatment method shows that compound 'A' was a

53-Lock & Key model for enzyme action proposed by Emil Fischer suggests that:

54-A metabolic pathway is a

55-Energy must be added for a chemical reaction to start. This is energy of:

56-sucrase (invertase) act on:

57-Blocking of active site of an enzyme temporarily is a type of

58-A group of enzymes called hydrolases acts upon:

59-A complete enzyme is

60-Active site of an enzyme is produced by