Micro-organisms

Question 1

What is the process of decomposition?

Answer 1

When agents break up dead organisms into simpler substances by digesting the organic matter and releasing nutrients

Question 2

What are the main agents of decomposition?

Answer 2

Bacteria and Fungi

Question 3

What is a pathogen?

Answer 3

An organism that can prduce disease

Question 4

How does refridgerating food defend against microbes?

Answer 4

Microbes live in temperatures between 4 and 60 degrees, bacteria can’t multiply outside this temperature

Question 5

How does canning food defend against microbes?

Answer 5

The can is heated to a high temperature and microbes are killed, then it is sealed vacuum shut so they can’t enter the contents

Question 6

How does dehydrating food defend against microbes?

Answer 6

The water is removed from the food, and it is no longer suitable for a microbe to survive

Question 7

What are the three elements of survivle for a microbe?

Answer 7

Water, warmth and food

Question 8

What is a micro-organism?

Answer 8

A living thing that is too small to be seen with the naked eye

Question 9

How do bacteria live?

Answer 9

In colonies, which can grow on agar