1. Which microscope did Robert Hooke use to study tree bark?

Question

electron microscope
compound light microscope
simple microscope
scanning microscope

2. Through which microscope were cells first observed?
simple microscope
tunneling microscope
compound light microscope
electron microscope

3. Which was the first “cell” viewed by the light microscope?
microbe
atom
DNA
oak bark

4. According to the cell theory, which describes cells?
All organisms are composed of multiple cells.
All cells have the same structure and function.
Cells are found in everything on Earth.
All living cells come from other living cells.

5. Which reason best explains why dead specimens must be used with transmission electron microscopes?
Electrons pass over the specimen.
The lights that are used are harmful to the specimens.
Specimens are placed in a vacuum.
The image that is produced is two dimensional.

6. Which experiments led to changes to the original cell theory?
experiments that showed that blood cells transport gases, waste, and nutrients throughout the body
experiments that showed that all cells are similar in how they metabolize and in their composition
experiments that transplanted synthetic chromosomes into bacterial cells to create a new species
experiments that established the existence of single-celled organisms and microbes

7. Which statement best explains why cells were observed in more detail using a compound microscope than a simple microscope?
A compound microscope has greater magnification ability than a simple microscope.
The compound microscope was invented before the simple microscope.
A compound microscope is much easier to manufacture than a simple microscope.
Compound microscopes were more common than simple microscopes.

8. Which is a part of the cell theory?
cells come from pre-existing cells
cells have a nucleus
organisms with one cell must be seen with a microscope
organisms must have more than one cell to live

9. In the 1600s, which scientist discovered microbes in pond water by using a microscope?
Theodor Schwann
Robert Hooke
Anton van Leeuwenhoek
Matthias Schleiden

10. Which microscope did Anton van Leeuwenhoek use to observe single-celled organisms?
simple microscope
compound light microscope
electron microscope
tunneling microscope

Answer 1

Here are the answers to your questions:

1. Which microscope did Robert Hooke use to study tree bark?

   • Answer: compound light microscope

2. Through which microscope were cells first observed?

   • Answer: simple microscope

3. Which was the first “cell” viewed by the light microscope?

   • Answer: oak bark

4. According to the cell theory, which describes cells?

   • Answer: All living cells come from other living cells.

5. Which reason best explains why dead specimens must be used with transmission electron microscopes?

   • Answer: Specimens are placed in a vacuum.

6. Which experiments led to changes to the original cell theory?

   • Answer: experiments that established the existence of single-celled organisms and microbes

7. Which statement best explains why cells were observed in more detail using a compound microscope than a simple microscope?

   • Answer: A compound microscope has greater magnification ability than a simple microscope.

8. Which is a part of the cell theory?

   • Answer: cells come from pre-existing cells

9. In the 1600s, which scientist discovered microbes in pond water by using a microscope?

   • Answer: Anton van Leeuwenhoek

10. Which microscope did Anton van Leeuwenhoek use to observe single-celled organisms?

• Answer: simple microscope

If you have more questions or need further clarification, feel free to ask!

Answer 2

90!!

What are the differences in the internal structures of the cells pictured to the right? Check all that apply.

There are fewer structures in the cell on the top.

All the structures are the same.

The structures in the cells are similar.
A prokaryotic cell is the top image, and a eukaryotic cell is the bottom image.

Answer 3

Based on the context of your question regarding the differences in the internal structures of prokaryotic and eukaryotic cells, here are the applicable differences:

1. There are fewer structures in the cell on the top. (likely referring to the prokaryotic cell, which typically has fewer organelles than eukaryotic cells)

2. The structures in the cells are similar. (prokaryotic and eukaryotic cells share some structures, like ribosomes)

3. A prokaryotic cell is the top image, and a eukaryotic cell is the bottom image. (assuming this is indeed the case, it helps to identify the key differences)

The statement "All the structures are the same." would not be accurate, as there are distinct differences between prokaryotic and eukaryotic cells, such as the presence of membrane-bound organelles in eukaryotic cells and the lack thereof in prokaryotic cells.

If you have specific images or need to clarify further about particular structures, feel free to share!