Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Quizzes

Create quizzes and tests automatically from your content using AI.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing

Search...

12 Questions

1 Views

Micro-organisms in Our Environment

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the term for micro-organisms that live on our bodies without harming us?

Beneficial microbes

Pathogens

Microbial flora

Normal flora (correct)

What is the role of micro-organisms in the environment?

They only live on human bodies

They are only beneficial to humans

They are responsible for the breakdown of organic waste (correct)

They are never found in the air we breathe

What percentage of micro-organisms are pathogenic?

10%

20%

3% (correct)

50%

Which of the following foods relies on microbial activity in the manufacturing process?

Sourdough bread Signup and view all the answers

What is the term for the ability of micro-organisms to cause disease?

Virulence Signup and view all the answers

What is the purpose of normal flora in our bodies?

To inhibit the invasion of harmful micro-organisms Signup and view all the answers

What is the term for micro–organisms that cause infection when they leave their normal place of residence in the body?

Opportunistic pathogens Signup and view all the answers

Why do some micro–organisms cause infection in people with chronic illness?

Because the host's immune system is impaired Signup and view all the answers

What is a characteristic of micro–organisms that distinguishes them from plants?

They lack green colouring matter Signup and view all the answers

Why is water important for bacterial growth?

It is a requirement for bacterial growth Signup and view all the answers

At what temperature do bacteria that grow in association with humans reproduce most rapidly?

37°C Signup and view all the answers

What is a way to decrease the risk of bacterial spread in the healthcare environment?

Keeping surfaces, instruments and equipment dry Signup and view all the answers