Question

name______ cells review

1. write out the 3 statements of the cell theory:

1. why do skin, blood and nerve cells all have different shapes?
2. what four basic structures are found in all cells (that means in bacteria, plants, animals... etc.)?

1. describe at least two (2) differences between a prokaryotic cell and a eukaryotic cell.

	prokaryotes	eukaryotes

|b|
|c|

1. list at least three (3) differences between a plant and an animal cell.

	plant cells	animal cells

|b|
|c|
|d|
fill in the blank with the correct words associated with organelles.

1. ____________ any tiny structure that performs a specialized function in the cell.
2. ____________ converts (changes) the chemical energy in food into a form that is more easily used by the body.
3. ____________ a network of channels throughout the cell; they help transport material & are covered with ribosomes.
4. ____________ modifies, collects, packages, and distributes molecules
5. ____________ saclike storage structure found in both animals and plants cells
6. ____________ short threadlike structure that helps a unicellular organism move
7. ____________ contains digestive enzymes and helps clean up the cell
8. ____________ long, whip - like tail that functions in movement of a cell.
9. ____________ found only in plant and algae cells, converts (changes) solar energy into food energy or glucose and has a double membrane around it.
10. if a cell in your body makes lots of protein, it will need to have lots of __________. muscle cells, which use lots of energy, would need to have many __________.
11. how are mitochondria and chloroplasts different?

mitochondria....
chloroplasts...

Explanation:

1. The cell theory statements are: All living organisms are made up of cells; cells are the basic unit of life; all cells come from pre - existing cells.
2. Skin, blood, and nerve cells have different shapes because their shapes are related to their functions. For example, nerve cells are long to transmit electrical signals over long distances.
3. The four basic structures in all cells are the cell membrane (controls what enters and leaves the cell), cytoplasm (the fluid inside the cell), ribosomes (make proteins), and DNA (genetic material).
4. B: Prokaryotes have no nucleus, Eukaryotes have a nucleus. C: Prokaryotes have circular DNA, Eukaryotes have linear DNA.
5. B: Plant cells have a cell wall, animal cells do not. C: Plant cells have large central vacuoles, animal cells have small or multiple vacuoles. D: Plant cells have chloroplasts for photosynthesis, animal cells do not.
6. Organelle.
7. Mitochondria.
8. Rough endoplasmic reticulum.
9. Golgi apparatus.
10. Vacuole.
11. Cilia.
12. Lysosome.
13. Flagellum.
14. Chloroplast.
15. Ribosomes; mitochondria.
16. Mitochondria convert chemical energy from food into ATP for the cell, chloroplasts convert solar energy into chemical energy (glucose) in plant and algae cells.

Answer:

1. All living organisms are made up of cells; cells are the basic unit of life; all cells come from pre - existing cells.
2. Their shapes are related to their functions.
3. Cell membrane, cytoplasm, ribosomes, DNA.
4. B: Prokaryotes have no nucleus, Eukaryotes have a nucleus. C: Prokaryotes have circular DNA, Eukaryotes have linear DNA.
5. B: Plant cells have a cell wall, animal cells do not. C: Plant cells have large central vacuoles, animal cells have small or multiple vacuoles. D: Plant cells have chloroplasts for photosynthesis, animal cells do not.
6. Organelle
7. Mitochondria
8. Rough endoplasmic reticulum
9. Golgi apparatus
10. Vacuole
11. Cilia
12. Lysosome
13. Flagellum
14. Chloroplast
15. Ribosomes; mitochondria
16. Mitochondria convert chemical energy from food into ATP for the cell, chloroplasts convert solar energy into chemical energy (glucose) in plant and algae cells.