A2.2.1 - Cell & Functions of Life

Question 1

Cell theory

Answer 1

• All organisms are composed of 1/+ cells
• Cells are the smallest/basic units of life
  → Organism activity depends on total activity of independent cells
• All cells come from pre-existing cells
  → mitosis/meiosis

Question 2

Branch of biology that studies all facets of cells

Answer 2

Cytology

Question 3

Organisms considered living (4 examples)

Answer 3

• Bacteria
• Fungi
• Plants
• Animals
• Cells

Question 4

Organism not considered living (2 example)

Answer 4

• Viruses
• Sub-cellular components