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Ch 3 S1: The Diversity of Cells
Introduction:
- Cell: The ___________ unit that can perform all the processes
necessary for ________________.
Cells & The Cell Theory:
- ________________________ was the first person to see cells.
- Anton van Leeuwenhoek was the first to see ______________,
which he called animalcules, and _______________.
- Matthias ________________ concluded that plant parts were
composed of cells.
- Thedor Schwann concluded that ________________________
were composed of cells.
- Rudolf __________________ stated that cells could form only
from other cells.
- The Cell Theory was created by Schleiden, Schwann, &
Virchow based off everyone’s observations. There are __ parts
o The cell is the _________ unit of structure & function in
_______ living things.
o All organisms are composed of ________________ cells.
o All cells come from ____________________________.
Cell Size:
- Cells, like a chicken egg, can be large because they
____________________ have to take in nutrients.
- Most cells are ______________ because they must take in
food and get rid of wastes.
- The area of a cell’s surface compared to its volume
______________ the cell’s size.
Parts of a Cell
- All cells have some parts in common.
o _____________________________: protective layer that
covers the cell’s surface and acts as a barrier.
o ____________________________: the fluid inside a cell
o ___________________________: structures that perform
specific functions within a cell.
o __________________: controls the activities of a cell;
may be enclosed in the nucleus or free-floating
Two Kinds of Cells
- Prokaryote: Single-celled organism with __________________
o PRO Means ___________
- Eukaryote: Organism whose cells DO have a ______________
Prokaryotes: Bacteria & Archaea
- Bacteria are the most common prokaryotes
- Three types of ________________________: heat-loving, saltloving, and methane-making
- heat-loving and salt-loving are called _________________
o extremophiles are organisms that live in extreme
conditions
Eukaryotic Cells & Eukaryotes
- Eukaryotic cells are the largest cells and are ______________
larger than most bacterial cells
- Have a Nucleus
- Most Eukaryotes are ______________________ (ex: humans,
plants, fungi)