Primary Metabolites and Secondary Metabolites Quiz

What role do microorganisms play in the industrial production of primary metabolites?

• They act as waste products of energy metabolism.

• They function as efficient factories for large-scale production.

• They inhibit the production of primary metabolites.

• They only produce secondary metabolites.

Which microorganism is responsible for the production of citric acid at around pH 2?

• Corynebacterium glutamicum

• Aspergillus niger

• Escherichia coli

• Saccharomyces cerevisiae

Under what conditions is L-glutamate produced by Corynebacterium glutamicum?

• In the presence of high sugar concentration

• Under biotin starvation

• At a pH of 7

• In the absence of oxygen

Which of the following amino acids is NOT mentioned as being produced by regulatory mutants of bacteria?

• Lysine

• Threonine

• Proline

• Tryptophan

What is unique about some primary metabolites mentioned in the text?

• They are typical waste products of energy metabolism.

• They can only be produced by genetically modified strains.

• They can be overproduced by wild-type strains under unusual conditions.

• They are only produced in the absence of sugar.

What is the role of amino acid analogs in the selection of mutants?

• They enhance the synthesis of amino acid biosynthetic pathway enzymes.

• They repress the synthesis of amino acid biosynthetic pathway enzymes or inhibit the first enzyme of the pathway.

• They contribute to the genome sequencing of C. glutamicum.

• They produce amino acids using immobilized enzyme columns.

How is the genome sequence of C. glutamicum significant in biotechnology?

• It helps in the production of amino acids using immobilized enzyme columns.

• It contributes to the construction of robust overproduction strains.

• It inhibits the synthesis of amino acid biosynthetic pathway enzymes.

• It enhances the resistance to amino acid analogs.

Which amino acid can be produced using immobilized enzyme columns?

• Glutamate

• Aspartate

• Lysine

• Alanine

What are primary metabolites often referred to as due to their role in maintaining normal physiological processes?

• Secondary metabolite

• Central metabolite

• Peripheral metabolite

• Essential metabolite

Which of the following is an example of a primary metabolite?

• Antibiotics

• Alkaloids

• Alcohols (ethanol)

• Pigments