Question

1. all the internal structures are suspended (floating) in what substance?
2. one of the bacteria in model 1 has a tail - like structure.

a. what is this structure called?
b. what might be the purpose of this structure?
c. based on your answer to the previous question, what might you infer about the absence of this structure in the other two bacteria cells?
model 2 - animal and plant cells
animal cell
plant cell

1. looking at model 2, list at least three structural differences (other than shape) between an animal and a plant cell.
2. where do you find the dna in each cell in model 2?
3. do both cells in model 2 have a nucleus?

Explanation:

1. All internal structures of a cell float in cytoplasm, which is a gel - like substance.

6a. The tail - like structure in bacteria is called a flagellum.
6b. Flagellum is mainly used for locomotion, enabling bacteria to move in their environment.
6c. The absence of flagellum in other bacteria might imply that these bacteria are non - motile.

1. Three structural differences between animal and plant cells: Animal cells have temporary vacuoles, no cell wall, and fewer Golgi apparatus - related structures compared to plant cells which have large permanent vacuoles, a cell wall, and more Golgi apparatus.
2. In both animal and plant cells in Model 2, DNA is found in the nucleus.
3. Yes, both the animal and plant cells in Model 2 have a nucleus.

Answer:

1. Cytoplasm

6a. Flagellum
6b. It is mainly used for locomotion, enabling bacteria to move in their environment.
6c. The bacteria may be non - motile.

1. Animal cells have temporary vacuoles, no cell wall, and fewer Golgi - related structures; Plant cells have large permanent vacuoles, a cell wall, and more Golgi apparatus.
2. In the nucleus
3. Yes