BIO506T Final Term MCQs 2023

BIO303 FINAL TERM MCQs

…….Cycle allow seeds to use lipids source. (glycoxylate)

If ∆G is negative the reaction will occur…….. spontaneously)

Compounds that contain two phosphate or Phosphoryl groups attached at different positions In the molecule are named bisphosphates

FMN and FAD co enzymes catalyze oxidation Reduction reactions

……(Flavoproteins

)7) During preparatory phase….. Molecules of ATP Are invested before the cleavage of glucose into 2, Three carbon compounds. (2)

Aspergillus Niger and Lactobacillus are the Microbes used to commercially produce citric acid And lactic acid. The production take place in….. (batch

fermenter)

(reactants)

RNA is a polymer of….. (ribonucleotides)

Primary Structure of RNA defined as the Number and sequence of in the RNA chain.

Pepsin is a digestive enzymes in the stomach is Maximally active ph……(2)

Ligand binds at a site on the protein called the… (binding site)

Mannose 6-phosphate is isomerized by Phosphomannose isomerase to yield fructose 6-Phosphate, an intermediate of glycolysis.

ate equation V° is the…. Reaction velocity. (initial)

The velocity of reaction is the rate of …. Formation. (product)

Reversible inhibitors bind to enzyme through ….. Bonds. (Non covalent)

The …….. Inhibition in effects lower the Concentration of the active site.

(noncompetitive)s

The starting point for either the forward or the Reverse reaction is called the… (ground state.)

The force driving the system toward equilibrium Is defined as the……

(standard free-energy Change)

The substrate concentration at which V₀ is…….. Is Km____(½ Vmax)

Since Vmax and Km are both constants, their Ratio is …. (constant) At the beginning of the titration, the acetic acid Is……… ionized. (Slightly)

Citric Acid Cycle discovered by… ( Hans28) Pyruvate, the product of glycolysis, is converted To… (acetyl-CoA)

29. Fatty acid entry into ……. Via the acyl-carnitine/ Carnitine

transporter._(Mitochondria)

30. When a substrate attach to an enzyme is Causes… changes. (

conformational )

31. ….. Reflects the affinity of enzyme for substrate. (Km)
32. When the enzyme is activated by DE phosphorylation (by a specific

phosphatase),

Is citrate enters the citric acid cycle and ATP is Produced.

33. Fatty acid consist of an alkyl chain and….34) The solution is said to be Neutral pH when

There are exactly equal concentrations of positive And negative ions.

35. Chylomicrons transport dietary ….. to tissues. (cholesterol)
36. In citric acid cycle the NADH is released by the Formation of …..

(oxaloacetate)

37. Which coenzyme is not used in pyruvate Dehydrogenase complete.

(GTP)

38. Energetic cost of activating fatty acid is Equivalent to …. Molecules of ATP. (2)
39. In general, irreversible inhibitors bind to Enzymes through covalent

bonds.

40. Carboxylation of pyruvate by CO2 to form Oxaloacetate, catalyzed by

pyruvate carboxylase

.41) ……… Serves as the universal energy currency in All living cell___ATP

42. Carbon in the fermentation medium .. can be Obtained

from._Upstream Processing

43. Glycolysis and gluconeogenesis Are______Reciprocally regulated
44. In nonoxidative phase, ribulose 5-phosphate is First epimerized to

xylulose 5Phosphate

45. DNA forms RNA by transcription whereas the Process by which RNA

form DNA is called Reverse transcription

46. Lyasis are the enzyme which do not catalyzed The reaction by

oxidation.

47. A ligand bind at a site on the protein
48. The noncompetitive inhibition is effects the Concentration of the

active enzyme.

49. Noncompetitive inhibitors do not interfere with The binding of

substrate to enzyme.

50. Reversible inhibitors bind to enzyme through….. Covalent Bonds.
51. ……… Reflect the efficient of the enzyme for the Substrate. __km
52. Mass action ratio is depicted by……. Q
53. Neutral lipid are stored in …….. adipocytes
54. Fatty acid consist of an alkyl chain and ……… Carboxylic acid
55. Sine Vmax and Km are both constant their ratio
56. Enzyme…….. System is described in terms of Free energy. Biological

System

57. Ionization of water can be measured by it ….. Electrical
58. The rate or velocity of a reaction (v) is the Number of substrate molecules converted to Product per unit time; ___Reaction Velocity.
59. Oxidation of Odd-numbered fatty acids: Fatty Acids with an odd

number of carbons are found in The lipids of many plants and marine organisms.

60. This cycle allows seeds to use lipids as a source Of energy to form the shoot during germination.__

Glyoxalate Cycle-2

61. If the non-protein moiety is a metal ion such as62) High effective catalyst commonly reaction rate

By a factor of ……10⁵ to 10¹⁷

63. Reaction velocity denoted by…… V
64. The rate of any reaction is determined by the Concentration of the……

reactants

65. Pepsin a digestive enzymes in the stomach is Maximally active at pH…..
66. Initial velocity is denoted by…. V•
67. Unequal electron sharing…..two electric dipoles
68. H30+ migrate towards the…… Cathode
69. . …..Cycle allow seeds to use lipids source. ( Glycoxylate cycle -2)
70. ∆S has a +ve sign when entropy…….. (increase)
71. If ∆G is negative the reaction will occur……..
72. Equilibrium constants are….. (multiplicative)
73. FMN and FAD co enzymes catalyze oxidation Reduction

reactions…..(Flavoproteins)