Which of the following statements correctly describes a difference between bacterial cells and animal cells?

Bacterial cells are surrounded by a cell wall. Animal cells are not.

1) Bacterial cells do not have a well defined nuclear membrane around the nucleus. It lies naked in the cytoplasm. This is called nucleoid while animal cells have a well defined nuclear membrane around the nucleus.

2) Bacterial cells do not have membrane bound cell organelles while animals do have.

3) Bacterial cells have cell wall while animal cells never have a cell wall.

air enters through the nose, moves through the nasal cavity, the pharynx, the larynx, enters the trachea, moves through the bronchi andbronchioles till the alveoli.