Cells: The Basic Units of Life

He discovered singled-celled organisms including bacteria

• Schleiden

• Virchow

• Hooke

• Leenwenhoek

What is cell ?

• Living organism

• A brick

• Basic unit of life

• component that combine together to form an organ

He concluded that all cells came from existing cells

• virchow

• schleiden

• hooke

• schwann

what limits most cells to a very small size?

• the surface area -to-volume ratio of the cell

• the thickness of the cell membrane

• the amounts of cytoplasm in the cell

• the number of surrounding cells

Which of these is NOT a part of the cell theory?

• Most cells are too small to be seen without a microscope

• All organisms are made of one or more cells

• The cell is the basic unit of all living things

• All cells come from existing cells

What is a tissue made of?

• larger than normal cells

• cells that work together

• cells with longer lives

• cardiac muscle

What do you call a group of organs that work together to perform a particular function?

• connective organs

• an organism

• an organ system

• a human being

What do eukaryote have that a prokaryote does not?

• one or more cells

• cells with a nucleus

• cells with DNA

• cells with membranes

The term for any organism with only one cell is

• protist

• unicellular

• specialized

• bacteria

What is a tissue made of?

• cells that work together

• larger than normal cells

• cells with longer lives

• cardiac muscles