What’s the smallest part of any living thing that still counts as being “alive”?

• molecule

• nucleus

• cell

• tissue

Who is considered the father of microscopy?

• Anton Von Leeuwenhoek

• Rudolf Virchow

• Lorenz Oken

• Bill Nye

Which of the following scientists concluded that new cells could be produced only from the division of existing cells?

• Matthias Schleiden

• Rudolf Virchow

• Charles Darwin

• Robert Hooke

Which of the following is NOT one of the three components of the Cell Theory?

• New cells are produced from existing cells.

• All living things are made up of cells.

• There are no structural differences between plant cells and animal cells.

• Cells are the basic units of structure and function in living things.

The diffraction and scattering of light waves as they pass through matter limits the ability of light microscopes to produce clear images at magnifications greater than:

• 10X

• 100X

• 1,000X

• 10,000X

What basic problem with light microscopy can be solved by using stains or dyes?

• Most living cells are nearly transparent.

• Most living cells are too dark/opaque to be observed under a light microscope.

• Stains and dyes allow colorblind scientists to see specimens under a microscope.

• Stains and dyes increase the magnifying power of light microscopes.

When dyes give off light of a particular color when viewed under specific wavelengths, it is called what?

• Quintessence

• Transmittance

• Reflectivity

• Fluorescence

Which of the following describes a Scanning Electron Microscope (SEM)?

• Beams of electrons are passed through ultra-thin slices of samples to produce flat (2-D) images.

• Can be used to microscopically examine the smallest single-celled organisms while they are still alive.

• Uses optical lenses to magnify the image of an object by focusing light.

• A pencil-like beam of electrons is scanned over the surface of a specimen to produce a 3-D image)

What is the name given to the membrane-enclosed structure that contains a eukaryotic cell’s genetic material?

• prokaryote

• nucleus

• mitochondria

• vacuole

All of the following are eukaryotes except:

• birds

• amoebas

• bacteria

• fungi