Microcheck

Capsules and slime layers enable organisms to adhere to surfaces and sometimes protect bacteria from our innate defense system.

■ How do capsules differ from slime layers?

■ Explain why a sugary diet can lead to tooth decay.

Cells in intestine

Capsule (glycocalyx)

Cells in intestine

Capsule (glycocalyx)

Figure 3.37 Glycocalyx This layer enables bacteria to attach to specific surfaces. (a) Capsules facilitating the attachment of bacteria to cells in the intestine (EM). (b) Masses of cells of Eikenella corrodens adhering in a layer of slime (SEM).

Figure 3.37 Glycocalyx This layer enables bacteria to attach to specific surfaces. (a) Capsules facilitating the attachment of bacteria to cells in the intestine (EM). (b) Masses of cells of Eikenella corrodens adhering in a layer of slime (SEM).

You Are What You Eat

You Are What You Eat

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