Cell Basics
This is the basic unit of structure and function in living things.
a cell
He named “cells” after looking at cork under a microscope in 1665.
Robert Hooke
“I’m the powerhouse of the cell.”
the mitochondrion
These simple cells have no nucleus.
prokaryotic cells
“I transport proteins through my maze-like tubes.”
Endoplasmic Reticulum
These organisms are made of only one cell.
unicellular organisms
He observed living “animalcules” such as bacteria for the first time.
Antonie van Leeuwenhoek
This tough structure is found only in plant cells and provides support.
the cell wall
These cells contain membrane-bound organelles.
eukaryotic cells
“I store water, food, enzymes, and waste.”
the vacuole
The average adult human body contains about this many trillion cells.
37 trillion
These two scientists stated that all plants and animals are made of cells.
Schleiden and Schwann
This structure controls cell activities and contains DNA.
the nucleus
Bacteria belong to this cell category.
prokaryotes
“I digest old cell parts with my enzymes.”
the lysosome
All living things must maintain this internal balance.
homeostasis
Virchow’s famous statement “Omnis cellula e cellula” means this.
all cells come from pre-existing cells
This green plant organelle makes food using sunlight.
the chloroplast
DNA floats freely in the cytoplasm in this type of cell.
a prokaryotic cell
“I control what enters and leaves the cell.”
the cell membrane
These tiny structures inside cells each perform a special job.
organelles
This 3-part idea explains that all living organisms are made of cells, cells are the basic unit of life, and all cells come from pre-existing cells.
the Cell Theory
These tiny organelles make proteins and can be found free or attached to the ER.
ribosomes
These cells are believed to be the first life forms on Earth.
prokaryotic cells
“I modify and package proteins for export.”
the Golgi apparatus