Bacteria's Eco-Friendly Functions

The video discusses the beneficial roles of bacteria in ecosystems, particularly in soil as decomposers, and their crucial role in cleaning oil spills by breaking down crude oil. It highlights the importance of bacteria in food production, such as in making cheese and yogurt, and concludes with a review and questions to reinforce learning.

What is the role of decomposer bacteria in the soil?

• They produce oxygen.

• They break down dead material.

• They cause diseases.

• They create oil.

How do oil-eating bacteria help in oil spill situations?

• They break down the oil.

• They convert oil into water.

• They prevent oil from spreading.

• They absorb the oil.

What do scientists add to oil spills to enhance bacteria activity?

• Helium

• Calcium

• Nitrogen

• Oxygen

Which bacteria is known for producing oxygen in water?

• Cyanobacteria

• Lactobacilli

• Streptococci

• Aerobic bacteria

What is the main function of bacteria in dairy product production?

• They freeze the milk.

• They spoil the milk.

• They evaporate the milk.

• They ferment the milk.

What causes the holes in Swiss cheese?

• Air bubbles

• Carbon dioxide gas

• Nitrogen gas

• Water vapor

How does yogurt benefit the digestive system?

• It increases acidity.

• It balances bacteria.

• It provides fiber.

• It adds sugar.