Question

cell theory
cytology=
what is a cell?
cells are the basic ____ that make up every __ ____.
______ first named cells because he looked at cork unc
a microscope and it reminded him of monastery cells or rooms.
what is the cell theory?
record the contributions of the following scientists to the cell theory:
schleiden schwann remak & virchow

what are the 3 major principles of the cell theory?
•
•
•
how do prokaryotic & eukaryotic cells differ?
all cells have ____, which carries their __ ____, and a
____ __, which acts as a ____ between the
cell and its environment.
there are 2 major types of cells:

1. eukaryotic cells have ______ bound by membranes. each

organelle performs a specific ______ in the cell.

1. prokaryotic cells do not have membrane - bound ______.

the dna of ______ cells is circular and loosely packed, while
eukaryotic cells have ____ tightly packed into a ____ to
protect it.
complete the venn diagram showing how prokaryotic & eukaryotic cells are similar &
different.
prokaryotic both eukaryotic
summary:
many ____ used experiments to create the 3 ____ of the
cell ____. although all cells have __ and cell ____, some
cells are ____ and some are ____.

Explanation:

1. "What is a cell?" section:

• Cells are the basic units of structure and function that make up every living organism.
• Robert Hooke first named cells because he looked at cork under a microscope and it reminded him of monastery cells or rooms.

2. Contributions of scientists to cell theory:

• Schleiden: Concluded that all plants are made of cells.
• Schwann: Concluded that all animals are made of cells.
• Remak & Virchow: Remak observed cell division, and Virchow proposed that all cells come from pre - existing cells (often stated as "omnis cellula e cellula").

3. 3 major principles of cell theory:

• All living organisms are composed of one or more cells.
• The cell is the basic unit of structure and function in living organisms.
• All cells arise from pre - existing cells.

4. "How do prokaryotic & eukaryotic cells differ?" section:

• All cells have DNA, which carries their genetic information, and a cell membrane, which acts as a barrier between the cell and its environment.
• There are 2 major types of cells:
• 1. Eukaryotic cells have organelles bound by membranes. Each organelle performs a specific function in the cell.
• 2. Prokaryotic cells do not have membrane - bound organelles.
• The DNA of prokaryotic cells is circular and loosely packed, while eukaryotic cells have DNA tightly packed into a nucleus to protect it.
• Venn diagram (Prokaryotic, Both, Eukaryotic):
• Prokaryotic only: No nucleus, no membrane - bound organelles, circular DNA, smaller in size (e.g., bacteria).
• Both: Have DNA, have a cell membrane, have ribosomes (for protein synthesis), are the basic unit of life.
• Eukaryotic only: Have a nucleus, have membrane - bound organelles (e.g., mitochondria, endoplasmic reticulum), linear DNA, larger in size (e.g., plant and animal cells).

5. Summary:

Many scientists used experiments to create the 3 principles of the cell theory. Although all cells have DNA and cell membranes, some cells are prokaryotic and some are eukaryotic. And "CYTOLOGY = the study of cells" (from the top right of the worksheet).

Answer:

1. "What is a cell?" section:

• Cells are the basic units of structure and function that make up every living organism.
• Robert Hooke first named cells because he looked at cork under a microscope and it reminded him of monastery cells or rooms.

2. Contributions of scientists to cell theory:

• Schleiden: Concluded that all plants are made of cells.
• Schwann: Concluded that all animals are made of cells.
• Remak & Virchow: Remak observed cell division, and Virchow proposed that all cells come from pre - existing cells (often stated as "omnis cellula e cellula").

3. 3 major principles of cell theory:

• All living organisms are composed of one or more cells.
• The cell is the basic unit of structure and function in living organisms.
• All cells arise from pre - existing cells.

4. "How do prokaryotic & eukaryotic cells differ?" section:

• All cells have DNA, which carries their genetic information, and a cell membrane, which acts as a barrier between the cell and its environment.
• There are 2 major types of cells:
• 1. Eukaryotic cells have organelles bound by membranes. Each organelle performs a specific function in the cell.
• 2. Prokaryotic cells do not have membrane - bound organelles.
• The DNA of prokaryotic cells is circular and loosely packed, while eukaryotic cells have DNA tightly packed into a nucleus to protect it.
• Venn diagram (Prokaryotic, Both, Eukaryotic):
• Prokaryotic only: No nucleus, no membrane - bound organelles, circular DNA, smaller in size (e.g., bacteria).
• Both: Have DNA, have a cell membrane, have ribosomes (for protein synthesis), are the basic unit of life.
• Eukaryotic only: Have a nucleus, have membrane - bound organelles (e.g., mitochondria, endoplasmic reticulum), linear DNA, larger in size (e.g., plant and animal cells).

5. Summary:

Many scientists used experiments to create the 3 principles of the cell theory. Although all cells have DNA and cell membranes, some cells are prokaryotic and some are eukaryotic. And "CYTOLOGY = the study of cells" (from the top right of the worksheet).