Question

2.why is it a theory? 3.list 3 scientists and their contributions to the cell theory. 4.what do plant cells have that we do not? 5.what do animal cells have that plants do not? animal cells have centrons that coorinat cell division 6.list 3 types of microscopes and their magnification. 7.what is the difference between prokaryote and eukaryote cells.

Explanation:

1. Why is it a theory?: The cell theory is a theory because it is a well - substantiated explanation of a natural phenomenon (the nature of living organisms at the cellular level), based on a large body of evidence from multiple scientific investigations.
2. List 3 scientists and their contributions:

• Robert Hooke: Coined the term "cell" after observing cork under a microscope.
• Matthias Schleiden: Stated that plants are made of cells.
• Theodor Schwann: Stated that animals are made of cells.

1. What do plant cells have that we do not?: Plant cells have a cell wall (provides structure and protection), chloroplasts (for photosynthesis), and a large central vacuole (stores water and nutrients).
2. List 3 types of microscopes and their magnification:

• Light microscope: Can magnify up to about 1000x.
• Transmission electron microscope (TEM): Can magnify up to 2 million times.
• Scanning electron microscope (SEM): Can magnify up to 300,000 times.

1. What is the difference between prokaryote and eukaryote cells?: Prokaryotes lack a nucleus and membrane - bound organelles, are generally smaller and simpler, while eukaryotes have a nucleus and various membrane - bound organelles, and are more complex.

Answer:

1. The cell theory is a well - substantiated explanation based on evidence.
2. Robert Hooke: Coined "cell"; Matthias Schleiden: Plants are made of cells; Theodor Schwann: Animals are made of cells.
3. Cell wall, chloroplasts, large central vacuole.
4. Light microscope: up to 1000x; Transmission electron microscope: up to 2 million times; Scanning electron microscope: up to 300,000 times.
5. Prokaryotes lack nucleus and membrane - bound organelles, are simpler; eukaryotes have a nucleus and membrane - bound organelles, are more complex.