Micro-organisms and Their Characteristics

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What are microorganisms or microbes?

Living organisms that can only be seen with a microscope (correct)

Living organisms that can be seen with the unaided eye

Non-living organisms that are visible to the naked eye

Non-living organisms that can only be seen with a magnifying glass

What is a common observation about moist bread during the rainy season?

Its surface gets covered with greyish white patches (correct)

It becomes harder

It turns red in color

It starts smelling like roses

Why are microorganisms called 'microorganisms'?

Because they are very large in size

Because they can only be seen under a microscope (correct)

Because they are colored microscopically

Because they are invisible to the naked eye

What can be observed by spreading a drop of moist soil on a slide and looking under a microscope?

Black rounded structures Signup and view all the answers

Why do some microorganisms require the help of a microscope to be seen?

Because they are too small to be seen with the unaided eye Signup and view all the answers

What is the significance of observing water and soil under a microscope for microorganisms?

To prove the presence of invisible microorganisms Signup and view all the answers

Which of the following is a common example of a pathogenic bacterium?

Streptococcus (Strep) Signup and view all the answers

How do pathogenic microorganisms primarily spread among humans?

Via direct contact, inhalation, ingestion, or through vectors Signup and view all the answers

Which of the following is an example of a pathogenic virus?

Rotavirus Signup and view all the answers

What is a characteristic feature of pathogenic fungi like Candida?

They can invade tissues and cause diseases Signup and view all the answers

In what ways can pathogenic microorganisms be transmitted indirectly?

Via vectors like mosquitoes and ticks Signup and view all the answers

What distinguishes pathogenic microorganisms from non-pathogenic ones?

Their potential to cause diseases in humans, animals, and plants Signup and view all the answers

What was a devastating plague that swept across Europe during the Middle Ages?

Bubonic Plague Signup and view all the answers

How do vaccines help in controlling pathogenic microorganisms?

By targeting specific parts of bacteria Signup and view all the answers

What is a consequence of overuse and misuse of antibiotics?

Contribution to antibiotic resistance Signup and view all the answers

How does proper handwashing help in preventing the spread of pathogenic microorganisms?

By neutralizing pathogens Signup and view all the answers

What method helps limit the spread of vector-borne diseases?

Vector control measures Signup and view all the answers

Why is understanding the role of microorganisms important for human health and global ecosystems?

To appreciate the interconnectedness of life Signup and view all the answers