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Worksheetssugar metabolism ob
Total questions: 14
Worksheet time: 7mins
What is the primary source of carbon and energy for bacteria in dental plaque?
Endogenous sources
Saliva
Exogenous sources
Intracellular glycolytic intermediates
Which bacteria is known for producing lactic acid from sugar metabolism?
S. mutans
Veillonella sp.
Oral streptococci
Lactobacilli
What type of acid is produced by the fermentation of carbohydrates?
Formic acid
Citric acid
Lactic acid
Acetic acid
Which process is primarily used by cariogenic bacteria for energy production?
Aerobic respiration
Anaerobic glycolysis
Krebs cycle
Beta-oxidation
What is the role of EPS in dental plaque?
Energy storage
Bacterial adhesion
Acid production
Nutrient absorption
Which compound is formed from the oxidation of glucose during glycolysis?
Lactate
Pyruvate
Acetyl-CoA
Ethanol
What is the effect of fluoride on sugar transport systems in bacteria?
No effect
Enhances transport
Disrupts transport
Increases sugar uptake
Which type of linkages are involved in the formation of dextran?
Alpha-1:4 linkages
Beta-1:6 linkages
Alpha-1:6 linkages
Beta-1:3 linkages
What is the primary end product of fermentation by yeast?
Carbon dioxide
Ethanol
Acetic acid
Lactic acid
Which system operates optimally at neutral pH for sugar metabolism?
PEP-PTS
Glucose permease
Anaerobic glycolysis
Multiple sugar metabolism system
What is the main consequence of prolonged exposure to organic acids in dental plaque?
Increased saliva production
Reduction of bacterial growth
Strengthening of enamel
Demineralization of enamel
Which bacteria can utilize sucrose to produce EPS?
Lactobacilli
Veillonella sp.
Oral streptococci
S. mutans
What is the role of NAD+ in the metabolic processes discussed?
Electron donor
Electron acceptor
Energy storage
Substrate for fermentation
What is the primary function of the Kreb cycle in bacteria?
Energy production
Sugar transport
Protein synthesis
Fatty acid metabolism
