Discipline: Parasitology
Page
46
of
59
E) Clinical Parasitology (MCQs)
Answer
Key
C Methylene blue
D Bismark brown
767)
- Whenever the cell’s ATP supply is depleted, which of the following enzyme’s activity is increased?
D
A Hexokinase
B Pyruvate kinase
C Glucokinase
D Phosphofructokinase-1
768)
What is the first step in the payoff phase of glycolysis?
B
A Reduction
of
1,
3-bisphosphoglycerate
to
glyceraldehyde 3-phosphate
B Oxidation of glyceraldehyde 3-phosphate to 1, 3-
bisphosphoglycerate
C Reversible conversion of dihydroxyacetone phosphate
to glyceraldehyde 3-phosphate
D Irreversible conversion of dihydroxyacetone phosphate
to glyceraldehyde 3-phosphate
769)
The product formed in the first substrate level phosphorylation in glycolysis is?
B
A Pyruvate
B 3-phosphoglycerate
C 1, 3-bisphosphoglycerate
D 2-phosphoglycerate
770)
Glycolysis converts?
A
A Glucose into pyruvate
B Glucose into phosphoenolpyruvate
C Fructose into pyruvate
D Fructose into phosphoenolpyruvate
771)
Product of Krebs cycle essential for oxidative phosphorylation is?
D
A NADPH and ATP
B Acetyl CoA
C CO2 and oxaloacetate
D NADH and FADH2
772)
Which molecule accepts hydrogen from malate?
B
A FAD
B NAD
C NADP
D FMN
773)
TCA cycle occurs in aerobic respiration due to?
A
A
Electron transport chain requires aerobic conditions to
operate
B Oxygen is a reactant
C Oxygen has a catalytic function
D All of the above
774)
Acetyl CoA is formed from pyruvate by which reaction?
C
A Dehydration
B Reduction
C Oxidative decarboxylation
D Dephosphorylation
775)
FAD is reduced in which of the reaction of the Kreb’s cycle?
D
A Isocitrate to oxaloacetate
B Succinyl CoA to Succinate
C Fumarate to malate
D Succinate to fumarate
776)
Which of the following is the correct sequence of electron acceptors in ETS for production of ATP?
A
A Cyt b, c, a, a3
B Cyt a, a3, b, c
C Cyt c, b, a, a3
D Cyt b, c, a3, a
777)
Electron transport system (ETS) is present in which of the following parts of mitochondria?
A
A Inner membrane
B Outer membrane
C Matrix
D Stroma
778)
ATP synthesis by ATP synthase is driven by the movement of?
A
A Protons
B NADH
C Electrons
D All of the above
779)
Which of the following products of glucose oxidation are necessary for oxidative phosphorylation?
B
A Pyruvate
B NADH and FADH2
C Acetyl CoA
D NADPH and ATP
780)
CO2 fixation in parasite take place through?
C
A Phosphoenolpyruvate carboxylase
B Malic enzyme
C Both Phosphoenolpyruvate carboxylase and malic
enzyme
D None
781)
The nutritional physiology of protozoa varies according to?
C
A Protozoan species
B Location of parasite
C Both species and location of protozoa
D None
782)
Which is true for Euplotes species?
D
A Free living ciliate having 50–60 μm size
B Obligate ectocommensal ciliate having 100–170 μm size
C Free living ciliate showing ciliary rows
D Free living ciliate having 100–170 μm size
783)
The live prey ingested by rhizopodans is catalyzed by?
C