WorksheetsPrimary Metabolites
Total questions: 10
Worksheet time: 3mins
Primary metabolites are produced during
Lag phase
Log phase
Stationary phase
Decline phase
Primary essential metabolites are
Require to sustain cell growth process
Produced in excessive amount
End product of fermentation process
Examples are acetone and lactic acid
Alcohol fermentation is catalyzed by
Pyruvate dehydrogenanse and alcohol decarboxylase
Pyruvate decarboxylase & alcohol dehydrogenase
Pyruvate kinase & alcohol phosphatase
Pyruvate phosphatase & alcohol kinase
Below are the applications of ethanol, except
Production of butadiene
Alcoholic beverages
Diluent in pharmaceuticals
Production of glycol ether
What happen during malting process?
Steeping
Germination
Kilning
All of the above
Wort is
Starch-rich liquid
Protein-rich liquid
Sugar-rich liquid
Grain-rich liquid
Butanol is better than ethanol because
It contains higher volatility
It has lower boiling point
It adsorb moisture readily
It has higher energy content
Clostridium acetobutylicum
Gram-positive bacillus
Switches its metabolism from acidogenesis to solventogenesis when pH decrease
Produces ABE in 3:6:1 ratio
All of the above
Alkanes in natural gas and crude oil are separated by
Fractional filtration
Fractional differentiation
Fractional distillation
Fractional chromatography
Why is it difficult to purify alkanes from most Eubacteria?
They are produced intracellularly
They are mostly long-chain n-alkanes
The synthesis requires sunlight
They are produced in low amounts
