Which of the following statements is incorrect?

The yeast used in making bread and beverages is a prokaryotic fungus.

The incorrect statement is:

(a) The yeast used in making bread and beverages is a prokaryotic fungus.

Yeast is actually a eukaryotic fungus, not a prokaryotic organism. It belongs to the Kingdom of Fungi and is widely used in the food and beverage industry for various purposes. In breadmaking, yeast is used as a leavening agent, producing carbon dioxide gas through fermentation, which causes the dough to rise. Yeast is also used in the production of alcoholic beverages like beer and wine, where it ferments sugars to produce alcohol.

Prokaryotic organisms, on the other hand, lack a membrane-bound nucleus and other membrane-bound organelles. They are represented by bacteria and archaea. Yeast, being a eukaryotic organism, has a distinct nucleus and other membrane-bound organelles.

Therefore, the incorrect statement is that the yeast used in making bread and beverages is a prokaryotic fungus. In reality, yeast is a eukaryotic fungus.

(b) Streptokinase is produced by Streptococcus, modified by genetic engineering, and used as a clot buster.This statement is correct. Streptokinase is an enzyme that is produced by certain strains of the bacterium Streptococcus. It is used as a clot buster in medical applications.

(c) Lipases are added to detergent for removing oily stains from laundry.This statement is also correct. Lipases are enzymes that break down fats and oils. They are effective in removing oily stains from laundry. Lipases are often added to laundry detergents as an ingredient to enhance the cleaning power for oil-based stains.

(d) Pectinases are used in the clarification of bottled fruit juices.This statement is correct. Pectinases are a group of enzymes that can break down pectin, a complex polysaccharide found in plant cell walls. In the clarification of bottled fruit juices, pectinases are used to degrade pectin and improve the clarity and consistency of the juice. Pectinases help break down the pectin substances that can cause cloudiness and sedimentation in fruit juices, resulting in a clearer and more visually appealing product.