Cell Theory
This tool, invented in the 1600s, allowed scientists to first see cells.
Microscope
Called the “powerhouse of the cell,” this organelle releases energy from food.
Mitochondria
An organism made of only one cell is described by this term.
Unicellular
This green organelle in plant cells captures sunlight for photosynthesis.
Chloroplast
Cells that have a nucleus are this type of cell
Eukaryotic
According to cell theory, all living things are made of one or more of these.
Cells
This organelle is the control center of the cell and contains the DNA.
Nucleus
Humans, trees, and dogs are all examples of this type of organism.
Multicellular Eukaryotic
This rigid outer layer found in plant cells but not animal cells gives the plant its structure and support.
Cell Wall
Bacteria are an example of this type of cell, which has no nucleus.
Prokaryotic
The smallest unit of life on earth is what?
A cell
These tiny structures make proteins and can be found floating in the cytoplasm or attached to the endoplasmic reticulum.
Ribosomes
Bacteria, amoebas, and paramecia are all examples of this type of organism.
Unicellular
Plant cells typically have one large one of these, which stores water and other nutrients, while animal cells have small ones or none.
In prokaryotic cells, the DNA floats freely in this region of the cell instead of being enclosed in a nucleus.
cytoplasm
The third part of cell theory states that all cells come from these.
Pre-existing cells (other cells)
This organelle packages, sorts, and ships proteins and other materials out of the cell, like a post office.
Golgi body
In a multicellular organism, similar cells working together form this, which is the next level of organization above cells.
Tissue
Both plant and animal cells have this flexible barrier that controls what enters and leaves the cell.
Cell Membrane
Of the two cell types, this one is generally larger and more complex.
Eukaryotic
Schleiden, Schwann, and Virchow are credited with developing this, which has three main parts.
Cell Theory
Often called the cell’s “recycling center,” this organelle contains enzymes that break down waste and worn-out cell parts.
Lysosome
A single-celled organism must do all of these things on its own, while multicellular organisms have cells that differentiate and specialize.
Carry out life functions and processes
Plant cells tend to have this shape because of the cell wall, while animal cells tend to be round or irregular.
Rectangle/square/box shaped
rokaryotes lack these structures, which are specialized parts of the cell surrounded by their own membranes.
Membrane-bound organelles