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CYTOLOGY

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CYTOLOGY. Study of cells. Basic unit of function and structure in an organism. Organism ... ALL LIVING THINGS ARE MADE UP OF ONE OR MORE CELLS. Cell. ANTON von ... – PowerPoint PPT presentation

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Title: CYTOLOGY


1
CYTOLOGY
  • Study of cells

2
Cell
  • Basic unit of function and structure in an
    organism
  • Organism
  • living thing
  • ALL LIVING THINGS ARE MADE UP OF ONE OR MORE
    CELLS.

3
ANTON von LEEUWENHOEK
  • Credited with inventing the microscope
  • Father of microbiology
  • Viewed pond water
  • animalcules-- protists

4
ROBERT HOOKE
  • Named the CELL
  • Viewed cork cell
  • Looked like rooms of monks First to observe dead
    plant cells

5
ROBERT BROWN
  • Observed living cells
  • Observed large circular structure
  • Named the NUCLEUS

6
MATTHIAS SCHLEIDEN
  • German botanist
  • Studied plant cells
  • ALL PLANTS ARE MADE OF CELLS.

7
THEODOR SCHWANN
  • German zoologist
  • Studied animals
  • ALL ANIMALS ARE MADE OF CELLS.

8
RUDOLF VIRCHOW
  • German physician
  • ALL CELLS COME FROM PRE-EXISTING CELLS.

9
CELL THEORY
  • Table 4.1 p. 70

10
Characteristics of living thingsp. 6-9
  • All living things have cells and exhibit
    organization.
  • All living things respond to stimuli.
  • All living things maintain homeostasis.
  • All living things use energy.

11
Characteristics of living things
  • All living things grow and develop.
  • All living things evolve
    (change over time).
  • All living things have the ability to reproduce.

12
  • At least 200 types of cells
  • Cell function influences physical features
  • Cells differ in size
  • Largest cell ostrich egg yolk
  • Human egg size of sentence period .

13
LIMITATIONS OF CELL SIZE
  • Surface area does NOT increase at same rate as
    volume
  • Materials have difficulty entering cell
  • Materials have difficulty getting to where they
    are needed
  • Nucleus has limited control over cell

14
Two basic cell types
  • PROKARYOTES
  • Lack nucleus and membrane bound organelles
  • Domain Bacteria / Domain Archaea
  • EUKARYOTES
  • Possess nucleus and membrane bound organelles
  • Generally larger than prokaryotic cells

15
LEVELS OF ORGANIZATION
  • CELL
  • Tissue
  • group of cells working together
  • Organ
  • group of tissues working together
  • Organ system
  • group of organs working together
  • Organism
  • group of organ systems working together
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