Download Cell Similarities Notes

Name ___________________________ Date ___________________ Period _____ Score out of 4 _____
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Cell Similarities PowerPoint Notes
Cells function similarly in all living organisms.
_______
of cells. In multicellular organisms like you, there are many different types of _____________ cells.
About 200 different types of specialized cells make up the tissues and organs of your ____________.
For example, the cells that line the retina of your eye have a structure and function that is very ______
from your skin cells. Even though there are many different types of cells, they all share ___________
Some organisms are made of only a
_____________ cell.
Other organisms are made of
characteristics. All cells have a cell membrane, organelles, cytoplasm, and DNA.
1. All cells are surrounded by a
_____________
_____________.
The cell membrane is a barrier between the inside of the cell
and its environment. It also controls the
_____________ of
_____________ into and out of the cell.
2. All cells contain _____________.
An organelle is a structure inside of a cell that helps the cell
_____________ its functions. Although all cells contain
organelles, they don’t all contain the same
_____________.
3. All cells contain _____________.
The cytoplasm is a ____________ ___________ that
contains the ____________. It also contains the
compounds cells need to _____________ such as water,
salts, enzymes, and other carbon compounds.
4. All cells contain
_____________.
The cell theory states that all cells come from other cells. When cells reproduce, they make
_____________ of their _____________ and pass it on to the new cells. DNA contains the
instructions for making _______ cells and controls all cell _____________.
Classifying cells
Based on the organization of their structures, all living cells can be classified into two groups:
_____________ and _____________. Animals, plants, fungi, and protozoans all have
eukaryotic cells. Only bacteria have prokaryotic cells.
1. Prokaryotic Cells
Prokaryotic cells do not have a
_____________.
The word, prokaryotic means “________
___________” in Greek. Only bacteria have this type of cell. The DNA in a prokaryotic cell is
bunched up in the _____________ of the cell. The organelles are not covered with a membrane.
Scientists believe that _______ _________ on Earth came from __________ cells. The oldest
fossils of bacteria are estimated to be _____________billion years old.
2. Eukaryotic cells
_____________ and ________________ _____________. The
word eukaryotic means “__________________” in Greek. The oldest fossils of eukaryotic cells
are about 2 billion years old. __________, ___________,__________, and
_____________ all have eukaryotic cells. There is more __________ in these types of cells
and it is found in the nucleus. They tend to be about __________ times larger than prokaryotic
Eukaryotic cells have a
cells.