week 1-class 2

In microbiology, the relationship between snail and bacteria can be mutualism if both get benefits.

Here’s how:

• Bacteria live inside the snail.

• The bacteria use carbon dioxide and other chemicals to make energy.

• The bacteria get a safe place to live (inside the snail).

• In return, the snail gets nutrients made by the bacteria.

So, both snail and bacteria benefit.

👉 This is called mutualism.

From a microbiology point of view:

• The bacteria help the snail survive in places where there is no sunlight (like deep ocean).

• The snail gives the bacteria a protected space and materials (like CO₂ or sulfur) to help them grow.

✅ Answer: Mutualism – both snail and bacteria benefit.

scalp and step epidermidisae relation ship

👉 This is called mutualism.