Cell Theory & Common Features
This common feature acts as a "gatekeeper," regulating what enters and leaves the cell
Cell Membrane
These cells are older, smaller, and do not have a nucleus
Prokaryotic Cells
This organelle is the "control center" because it contains the cell's genetic information (DNA)
Nucleus
These two organelles are found in plant cells, but not animal cells
cell wall and chloroplast
These blood cells are squishy and small so they can carry oxygen and nutrients through all vessels
Red Blood Cells
This common feature is the fluid interior of the cell
These cells are newer, more complex, and house their DNA in a nucleus
Eukaryotic Cells
This organelle is known as the "powerhouse" because it creates energy (ATP)
Mitochondria
Free points!
free points!
These large blood cells are the "defenders" of the body that help fight off infections
White Blood Cells
This common feature provides the site where proteins are made
Ribosomes
Eukaryotic cells contain these "little organs," which are specialized internal compartments
Organelles
This organelle is a network of tubes that serves as a "roadway" for proteins to travel
Rough Endoplasmic Reticulum
Plant cells have one large version of this for storing water, while animal cells have many small ones
Vacuole
These have "arms" that grab onto each other to form a clot and stop bleeding
Platelets
Every single cell on Earth contains these five features
DNA, ribosomes, cytoplasm, cell membrane, and a cytoskeleton
Prokaryotes are always this, meaning they are made of only one single cell
unicellular
While the cell membrane is squishy, this plant-only structure is rigid and provides shape
Cell wall
In the levels of organization, this comes immediately after "cells" and before "organs"
Tissue
To heal a cut, cells must first do this to their DNA before they can make more cells
Make a copy
What are the 3 parts of Cell Theory?
1) all living things are made of cells, 2) cells are the basic unit of life, and 3) all cells come from pre-existing cells
Instead of a nucleus, a prokaryote has its DNA in a clump called this
Nucleoid
This organelle harvests energy from the sun to create sugar through photosynthesis
Chloroplast
This is the full list of the levels of organization in a multicellular organism, from smallest to largest
cell → tissue → organ → organ system → organism
After copying DNA, cells do this to fill in the gap of a wound
Multiply