Question

Which of the following best describes an example of a specific internal response to harmful bacteria?

Skin serves as a physical barrier that prevents bacteria from entering the body.

Saliva contains enzymes that destroy bacteria and prevent infection.

Bacterial infection causes the release of histamine, which leads to inflammation and swelling.

Antigens trigger the production of antibodies, which mark bacteria for destruction.

Answer 1

I believe it is C, but I am not sure?

Answer 2

Yep, it is c.

Skin responds to external bacteria, therefore this is wrong.
Saliva contains lysozyme, an enzyme and targets all bacteria, but is produced constantly and is therefore not a response.
Antibodies do this, but to do this they have to target the bacterial antigens specifically. This is specific.
Swelling leads to increased blood flow to the area and more immune cells in the infected area. This is both non-specific and internal.

Answer 3

Please fan/medal!

Answer 4

Thanks!

Answer 5

Thank you!