Biology Chapter 7

Who used a compound microscope to see chambers within cork and named them "cells"?

• Anton van Leeuwenhoek
• Robert Hooke
• Matthias Schleiden
• Rudolf Virchow

What advance in technology made the discovery of cells possible?

• the centrifuge
• the particle accelerator
• the ultraviolet light
• the microscope

Which of the following is NOT a principle of the cell theory?

• Cells are the basic units of life.
• All living things are made of cells.
• Very few cells are able to reproduce.
• All cells are produced from existing cells.

Which of these is NOT true of cells?

• They are much like empty rooms.
• They were first discovered in the 1600s.
• They can be found in pond water.
• They contain a huge array of working parts.

Electron microscopes can reveal details

• only in specimens that are still alive.
• about the different colors of cell structures.
• of cell structures only once they are stained.
• 1000 times smaller than those visible in light microscopes.

Which type of microscope can produce three-dimensional images of a cell's surface?

• transmission electron microscope
• scanning electron microscope
• simple light microscope
• compound light microscope

Colors seen in images made from electron microscopes are

• true to life.
• the colors of electrons.
• added to make certain structures easier to see.
• added so scientists can trace living cells through the body.

Looking at a cell under a microscope, you note that it is a prokaryote. How do you know?

• The cell lacks cytoplasm.
• The cell lacks a cell membrane.
• The cell lacks a nucleus.
• The cell lacks genetic material.

Which of the following enclose their DNA in a nucleus?

• prokaryotes
• bacteria
• eukaryotes
• viruses

Not all cells are alike. Which of the following is NOT a true statement about differences between cells?

• Cells come in many different shapes.
• Different kinds of cells are different sizes.
• Some cells have a nucleus, but others do not.
• Most cells have a membrane, but some do not.