A View of the Cell Life is Cellular. Discovering the Cell Robert Hooke – used a microscope to...
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![Page 1: A View of the Cell Life is Cellular. Discovering the Cell Robert Hooke – used a microscope to study cork – coined the term “cell” Anton van Leeuwenhoek.](https://reader038.fdocuments.in/reader038/viewer/2022110211/56649efe5503460f94c12922/html5/thumbnails/1.jpg)
A View of the Cell
Life is Cellular
![Page 2: A View of the Cell Life is Cellular. Discovering the Cell Robert Hooke – used a microscope to study cork – coined the term “cell” Anton van Leeuwenhoek.](https://reader038.fdocuments.in/reader038/viewer/2022110211/56649efe5503460f94c12922/html5/thumbnails/2.jpg)
Discovering the Cell
Robert Hooke– used a
microscope to study cork
– coined the term “cell”
Anton van Leeuwenhoek– first person to discovered life
in water using a microscope
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I. Introduction to the Cell
A. Cell Theory
– All organisms are made up of one or more cells.
– Cells are the basic unit of structure & function in organisms.
– All cells come from preexisting cells.
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B. Cells differ in size, shape, & organization.
– Cell Size Small cells function more efficiently
than large cells. Smaller is BETTER! Large cells cannot function efficiently
in the transport of materials & waste into and out of the cell.
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B. Cells differ in size, shape, & organization.
– Cell Shape The shape of cell depends on its function.
![Page 6: A View of the Cell Life is Cellular. Discovering the Cell Robert Hooke – used a microscope to study cork – coined the term “cell” Anton van Leeuwenhoek.](https://reader038.fdocuments.in/reader038/viewer/2022110211/56649efe5503460f94c12922/html5/thumbnails/6.jpg)
– Most cells contain a variety of membrane bound ORGANELLES - cell parts that perform specific functions for the cell
C. Internal Organization
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– A Large Organelle near the center of the cell is the NUCLEUS. It contains the cell’s genetic information and controls the activities of the cell.
– Whether a cell has or does not have a NUCLEUS is important for classifying cells.
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II. Prokaryotes Vs. Eukaryotes
EUKARYOTES – ORGANISMS WHOSE CELL OR CELLS
CONTAIN A NUCLEUS AND OTHER MEMBRANE-BOUND ORGANELLES.
– MORE COMPLEX– CAN BE HIGHLY SPECIALIZED– UNICELLULAR OR MULTICELLULAR– PLANTS, ANIMALS, FUNGI, PROTISTS
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Prokaryotes Vs. Eukaryotes
PROKARYOTES – ORGANISMS WHOSE CELLS DO NOT
HAVE A NUCLEUS AND OTHER MEMBRANE-BOUND ORGANELLES.
– SMALLER AND SIMPLER– UNICELLULAR ORGANISMS SUCH AS
BACTERIA AND BLUE-GREEN ALGAE
![Page 10: A View of the Cell Life is Cellular. Discovering the Cell Robert Hooke – used a microscope to study cork – coined the term “cell” Anton van Leeuwenhoek.](https://reader038.fdocuments.in/reader038/viewer/2022110211/56649efe5503460f94c12922/html5/thumbnails/10.jpg)
The difference between Prokaryotes and Eukaryotes is such an important distinction that they are placed in separate Kingdoms.
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Cell Structure (concept map)
Cells
prokaryotic eukaryotic
bacteria organelles
protists
fungi
plants
animals
can be
which are known as
which lack which
contain
which are
found in
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WRAP-UP QUESTIONS
What is the smallest most basic unit of life? Where is DNA in eukaryotes? …
prokaryotes? Why would you need a microscope to see a
prokaryotic organism? What are the 3 parts of the cell theory? Where do viruses fit in the cell theory?
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Viruses
Virology - study of viruses
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Viral Characteristics
Non livingNot made up of cells Cannot grow or replicate on their own Must be reproduced in living cells