Cells, Cell Theory, and Levels of Organization

What is the smallest unit of structure in a living thing?

• Organs

• Cell

• Tissue

• Organ System

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

What do a group of cells make?

• Tissue

• Organ

• Organ System

• Blood Cell

Tags

NGSS.MS-LS1-3

What do a group of organ systems make?

• Heart

• Respiratory System

• Organs

• Organism

What do a group of tissues make?

• Cell

• Organ

• Organism

• Organ System

Which cell theory is true?

• Some organisms are composed of one or more cells

• All cells are from preexisting cells

• The organs are the basic unit of structure and organization in organisms

• Animals are only from preexisting cells

Tags

NGSS.MS-LS1-1

Who was the first person to discover cells?

• Theodor Schwann

• Rudolf Virchow

• Anton Van Leeuwenhoek

• Robert Hooke

Who discovered cells come from preexsiting cells?

• Theodor Schwann

• Rudolf Virchow

• Matthias Schleiden

• Robert Hooke

Who wrote the first two parts of the cell theory and concluded that all animals are made of cells?

• Robert Hooke

• Anton Van Leeuwenhoek

• Matthias Schleiden

• Theodor Schwann

Which one is the level of organization from least to the greatest?

• Tissue, cell, organ, organ system, organism

• Cell, tissue, organ, organ system, organism

• Cell, tissue, organ system, organ, organism

• Organism, organ system, organ, tissue, cell

Which one is the level of organization from greatest to the least?

• Organism, organ system, organ, tissue, cell

• Organism, organ, organ system, tissue, cell

• Cell, tissue, organ, organ system, organism

• Organism, organ system, organ, cell, tissue