Question

unit 2 exam 15 points please do this on paper not in google classroom. this is not on google classroom. cell theory, microscopes, organelles, cell transport, atp, photosynthesis, cellular respiration. 1. check which one applies to the following microscopes 15 points. microscopes compound light microscope transmission electron microscope scanning electron microscope views both living and non - living specimens views non - living only specimens uses light and sees specimens in 2 - d uses electrons and sees specimen in 3 - d 2. which microscope moves electrons over a non - living specimen? which microscope passes electrons through a non - living specimen allowing us to see the inside of a cell? 3. what are the 3 parts of the cell theory and how did the cell theory come about?

Explanation:

1. Microscope - Cell Theory connection: The cell theory has three main parts: all living organisms are made of cells, cells are the basic unit of life, and all cells come from pre - existing cells. Microscopes were crucial in the development of the cell theory as they allowed scientists to observe cells. Hooke used a compound light microscope to observe cork and coined the term "cell". Leeuwenhoek used simple microscopes to observe single - celled organisms.
2. Microscope types and specimen observation:

• Compound light microscope: Views both living and non - living specimens, uses light and sees specimens in 2 - D.
• Scanning electron microscope: Moves electrons over a non - living specimen and sees specimens in 3 - D, uses electrons.
• Transmission electron microscope: Passes electrons through a non - living specimen to see the inside of a cell, uses electrons.

Answer:

1. The three parts of the cell theory are: all living things are composed of cells; cells are the basic units of structure and function in living things; new cells are produced from existing cells. The cell theory came about through the work of many scientists using microscopes to observe cells. Hooke's observation of cork cells with a compound light microscope and Leeuwenhoek's discovery of single - celled organisms with simple microscopes were important steps in its development.

2.

• Scanning electron microscope moves electrons over a non - living specimen.
• Transmission electron microscope passes electrons through a non - living specimen allowing us to see the inside of a cell.
• Compound light microscope views both living and non - living specimens, uses light and sees specimens in 2 - D.