Microorganisms Friend & Foe- NCERT 8

A preparation of weakened or killed pathogens.

• Bacteria
• Antibiotic Resistance
• Vaccine
• Capsid

Which of the following is an example of a harmful microorganism?

• Fungi used as antibiotics
• Ecoli on food that makes people sick
• Bacteria found in yogurt.
• Microorganisms helping dead matter to decay

Tags

NGSS.5-LS2-1

A student sets up a compost bin outdoors. Inside the bin microorganisms convert the student’s vegetable and paper scraps into rich fertilizer. Which of the following best describes the role that these microorganisms play in natural habitats?

• The microorganisms help balance the numbers of producers and consumers.
• The microorganisms help keep nutrients cycling through the ecosystem.
•  The microorganisms turn solar energy into sugars.
• The microorganisms function as autotrophs.

Tags

NGSS.MS-LS2-3

______________ helps us digest our food and convert it into simple form.

• Bacteria

• Fungi

• Protozoa

• Algae

Bacteria is known as ______________ in an ecosystem when feeding on dead organisms.

• decomposers
• herbivores
• pathogens
• infections

Tags

NGSS.MS-LS2-3

Food preservation can not be done by

• adding salt

• adding sugar

• drying under the sun

• adding kerosene

Fungi is benefical to us because of the following reason:

• They are a source of oxygen
• They can clean up pollution
• They are a source of antibiotics
• They help to clean run off from waste

Tags

NGSS.MS-LS2-5

Which of the following statements are true?

• All microorganisms are bad
• All microorganisms are good
• Some microorganisms are harmful, while some can be helpful
• Microorganisms are too small to do anything to anyone

Tags

NGSS.MS-LS2-4

Which is not an example of a harmful microorganism?

• Mold growing on a kitchen sponge
• Bacteria found in yogurt
• Bacteria that causes turberculosis
• Salmonella on uncooked chicken

What is an antibiotic?

• a rapid spread of a disease around the world

• a type of bacteria living in human cells

• a medicine that attacks harmful microbes

• a disease for which there is no known cure