Introduction

Question 1

cells

Answer 1

• small, membrane-enclosed units filled with a concentrated solution of chemicals
• has the extraordinary ability to create copies of themselves by growing and then dividing in two

Question 2

micrometer

Answer 2

• used to analyze very small particles
• the symbol for micrometer is “µm”

Question 3

microscope

Answer 3

• an instrument used for viewing very small objects
• typically magnified several hundred times

Question 4

light microscope

Answer 4

• use visible light to illuminate specimens
• allowed biologists to see the intricate structure that underpins all living things

Question 5

fluorescence microscope

Answer 5

• use methods of illumination and electronic image processing to see fluorescently labeled cell components in much finer detail

Question 6

electron

Answer 6

• a stable particle with a charge of NEGATIVE electricity
• found in all atoms and acting as the primary carrier of electricity in solids

Question 7

prokaryotes

Answer 7

• organisms whose cells do not have a nucleus
• divided into two domains: bacteria & archaea

Question 8

eukaryotes

Answer 8

• organisms whose cells have a nucleus

Question 9

archaea

Answer 9

• prokaryotic microorganisms that are evolutionarily distinct from bacteria
• too hostile for most other cells

Question 10

bacteria

Answer 10

• prokaryotic microorganisms that are evolutionarily distinct from archaea
• the species that live in the soil or make us ill