Cells Flashcards
-All plants are made of cells
Matthias Schleiden
-all animals are made of cells
Theodor Schwann
all cells come from pre-existing cells
Rudolf Virchow
-the method for cell origination, but was later disproven.
spontaneous generation
also called abiogenesis
spontaneous generation
-botanist
Matthias Schleiden
zoologist
Theodore Schwann
who stated “Omnis cellula e cellula”… “All cells only arise from pre-existing cells“
Rudolf Virchow
the basic unit of life
cells
Inside every living cells are small structures or compartments called
organelles
Structure: Phospholipid bilayer embedded with proteins (not an organelle per se, but a vital structure)
Cell Membrane
Function: Semi-permeable and selective barrier surrounding the cell
Cell Membrane
Structure: External outer covering made of cellulose (not an organelle per se, but a vital structure)
Cell Wall
Function: Provides support and mechanical strength; prevents excess water uptake
Cell Wall
Structure: Double membrane structure with pores; contains an inner region called a nucleolus
Nucleus