C1: Cell Structure

Question 1

What does the cell theory state?

Answer 1

• the cell is the basic unit of structure and function of all living organisms
• all cells arise from pre-existing cells by cell division

Question 2

Name the four scientists that contributed to the cell theory and state what they did.

Answer 2

Robert Hooke - examined slices of cork under a microscope and coined the term “cells”
Matthias Schleiden - concluded that all plants are made of cells
Theodor Schwann - stated that all animals are made of cells
Rudolf Virchow - concluded that new cells come from existing cells

Question 3

What are the two types of microscopes?

Answer 3

• Light microscope (uses photons for radiation)
• electron microscope (uses electron beams for radiation)

Question 4

What is cytology?

Answer 4

a branch of biology that deals with the study of cells

Question 5

What units do we use in science?

Answer 5

International system of units (SI units)