Questions about cells?

Question

1. Why do plant cells have cell walls and animal cells not have cell walls?

2. Plant cells dont have cilia or flagella for movement. why dont they have to be mobile?

3. Which are bigger, plant cells or bacteria?

Answer 1

1) plants don't have bones for rigidity. So they need the extra integrity

2) plants don't have to travel for food, other organisms do. But, many plants do have ciliated cells, ferns have sperm which have flagella (look at the picture next to my name those cells are plant cells adhering to each other via cilia although they are algea).

3) Plant cells are generally bigger than bacteria

Answer 2

1: Plants have cell walls so the can grow up to the sun. Think of it as an exoskeleton for the the cells.

2: Plants don't have to be mobile because they don't have to catch anything. Photosynthesis in the cells creates the sugars for the cell to live, whereas, animal cells have to either run away, or catch their prey.

3: As for size, I would taek a while guess, and say plant cells are bigger, simply because they have more stuff in them. Remember, bacteria don't have cloroplast, the organelles that give it the green color-chlorophyll on a cellular level.

Answer 3

first ans is that the plant cell is fully permable so the cell wall pervents it from bursting and animal cells are not fully permable permable means allowing solvents to pass through it and second ans is that if plants were made to be in one spot and plant cells are bigger than bacteria

Answer 4

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