Chapter 8 Study Questions

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 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 discovered in the late 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 3-D images of a cell's surface?

• tranmission electron microscope (TEM)

• scanning electron microscope (SEM)

• 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.