1.1 Cell Theory*

Question 1

Robert Hooke

Answer 1

founded the compound microscope in 1665

observed a piece of cork

Question 1

Anton van Leeuwenhoek

Answer 1

first to view a living cell under a microscope in 1674

Question 2

Rudolph Virchow

Answer 2

demonstrated diseased cells could arise from normal cells in tissue

Question 3

cell theory

Answer 3

1. all living things are composed of cells
2. the cell is the basic functional unit of life
3. cells arise only from preexisting cells
4. cells carry genetic information in the form of DNA, which is passed on from the parent cell to daughter cell

Question 4

cell theory caveat

Answer 4

• viruses are not considered living things
  
  • violation of 3rd and 4th tenets of cell theory
    
    • viruses are unable to reproduce on their own
    • viruses contain RNA as their genetic information

Question 5

1.1 Concept Check

Answer 5

1. all living things are made up of cells
2. the cell is the fundamental unit of life
3. all cells come from preexisting cells
4. cells carry genetic information (DNA) and pass DNA onto daughter cells