B5.2 Pathogens and diseases

Question 1

What can pathogens be?

Answer 1

Bacteria, viruses, protists or fungi

Question 2

How can communicable diseases be spread?

Answer 2

Spready directly by a pathogen or by a toxin made by a pathogen

Question 3

What are the most common pathogens in plants?

Answer 3

Viruses and fungi

Question 4

What are the differences between bacteria and viruses?

Answer 4

Bacteria can produce toxins that make you feel ill. Viruses live and reproduce inside your cells, causing cell damage
Viruses are smaller than bacteria

Question 5

How do bacteria reproduce?

Answer 5

By binary fission - they may produce toxins that affect your body and make you feel ill

Question 6

How do viruses reproduce?

Answer 6

They take over the cells of your body - live and reproduce inside the cells - damaging and destroying them

Question 7

What are the different types of transmission that can spread pathogens?

Answer 7

Direct contact - This can be sexual contact during intercourse or non-sexual contact, like shaking hands
Water or Air - thousands of tiny droplets containing virus particles to infect others.
Unhygienic food preparation - preparation Undercooked or reheated food can cause bacterial diseases
Vector - Any organism that can spread a disease is called a vector