Defense Against Disease IB Biology

Which of these is a non specific defence mechanism humans have to protect them against disease?

• Antibodies

• Antitoxins

• Stomach acid

• Phagocytosis

Why is cilia important in our respiratory system (lungs, trachea and bronchi)?

• It traps pathogens

• It wafts pathogen away

• It kills pathogens

Tick the 2 key ways our skin protects us

• Acts as a barrier

• Produces sweat

• Produces mucus

• Produces sebum

Which keyword describes what phagocytes do when they "take in" pathogens

• Digest

• Engulf

• Exhale

• Ingulf

What do phagocytes use to destroy pathogens?

• Acid

• Mucus

• Enzymes

• Sebum

What is the name of the white blood cells that produce antibodies?

• Phagocytes

• Lymphocytes

• Granocytes

What substance are antibodies made from?

• Protein

• Fat

• Carbohydrate

What is the name of the proteins on the surface of pathogens?

• Antibodies

• Antitoxins

• Antibiotics

• Antigens

Why does our body recognise pathogen antigens as foreign?

• They are a different colour to ours

• They are a different shape to ours

• They are a different size to ours

The final way white blood cells can protect us is to produce antitoxins. Which type of pathogen release toxins that need to be neutralised?

• Virus

• Fungi

• Bacteria

• Protists