2. The cell was discovered by Robert Hooke in 1665. He
examined (under a coarse, compound microscope) very thin
slices of cork and saw a multitude of tiny pores that he
remarked looked like the walled compartments a monk
would live in. Because of this association, Hooke called them
cells, the name they still bear. However, Hooke did not know
their real structure or function. [1] Hooke's description of these
cells (which were actually non-living cell walls) was
published in Micrographic. [2] His cell observations gave no
indication of the nucleus and other organelles found in most
living cells.

3.  Credit for developing cell theory is usually given to
three scientists: Theodor Schwann, Matthias
Schleiden, and Rudolf Virchow. In 1839, Schwann and
Schleiden suggested that cells were the basic unit of
life. Their theory accepted the first two tenets
of modern cell theory (see next section, below).
However, the cell theory of Schleiden differed from
modern cell theory in that it proposed a method of
spontaneous crystallization that he called "free cell
formation

4.  In 1855, Rudolf Virchow concluded that all cells
come from pre-existing cells, thus completing the
classical cell theory. (Note that the idea that all cells
come from pre-existing cells had in fact already been
proposed by Robert Remak; it has been suggested that
Virchow plagiarised Remake.)[9

5.  The observations of Hooke, Leeuwenhoek,
Schleiden, Schwann, Virchow, and others led to the
development of the cell theory. The cell theory is a
widely accepted explanation of the relationship
between cells and living things. The cell theory states:

6.  The cell is the basic structural and functional unit of
all known living organisms.
 It is the smallest unit of life that is classified as a
living thing, and is often called the building block of
life.
 Organisms can be classified as unicellular ( single
cell; including most bacteria) or multicellular
(including plants and animals).
 Humans contain about 10 trillion cells.

7. The Cell Theory states:
 All living organisms are composed of cells. They may
be unicellular or multicellular.
 The cell is the basic unit of life.
 Cells arise from pre-existing cells.

8. The modern version of the Cell Theory includes the
ideas that:
 Energy flow occurs within cells.
 Heredity information (DNA) is passed on from cell to
cell.
 All cells have the same basic chemical composition.

10.  DNA
 Plasma membrane
 Cytoplasm
 Ribosomes

11.  Prokaryotic cells are fundamentally different in their
internal organization from eukaryotic cells.
Notably, prokaryotic cells lack a nucleus and
membranous organelles.

12.  Eukaryotic cells contain a membrane-bound nucleus
and numerous membrane-enclosed organelles (e.g.,
mitochondria, lysosomes, Golgi apparatus) not
found in prokaryotes.

13. Nucleus
 Large Oval body near the centre of the cell.
 The control centre for all activity.
 Surrounded by a nuclear membrane.

14.  The outer boundary of the cell.
 It separates the cell from other cells.
 It is porous which allows molecules to pass through.

15.  Non living structure that surrounds the plant cell.
 Protects and supports the cell.
 Made up of a tough fibre called cellulose.

16.  Cell material outside the nucleus but within the cell
membrane.
 Clear thick fluid.
 Contains structures called organelles.

17.  Are clear fluid sacs that act as storage areas for
food, minerals, and waste.
 In plant cell the vacuoles are large and mostly filled
with water. This gives the plant support.
 In animal cells the vacuoles are much smaller.

18.  Power house of the cell.
 Centre of respiration of the cell.
 They release energy for cell functions.

19.  Contains a green pigment known as chlorophyll
which is important for photosynthesis.

20.  Tiny spherical bodies that help make proteins.
 Found in the cyto plasm or attached to the endo
plasmic reticulum.

21.  Systems of membranes throughout the cyto plasm.
 It connects the nuclear membrane to the cell
membrane.
 Passageway for material moving though the cell.

22.  Tube like structures that have tiny sacs at their ends.
 They help package protein.

23.  Also called the" suicide sacs "
 Small structures that contain enzymes which are
used in digestion.
 If a lysosome were to burst it could destroy the cell.

24.  Nutrition - The process by which materials from the
environment are taken into an organism and changed
into usable forms.
 Transport - All the processes by which substances
pass into or out of cells and circulate within the
organism.
 Respiration - The process by which orangisms obtain
the energy they need by releasing chemical energy
stored in nutrients.

25.  Synthesis - A process in which simple substances are
conbined chemically to form more complex
substances.
 Assimilation - The incorporation of materials into
the body of an oragnism.
 Growth - The process by which living organisms
increase regulates the opening and closing of the
stomates.
 Excretion - The process by which the wastes of
cellular metabolism are removed from an organism.

26.  Regulation - The processes by which an organism
maintains a stable internal environment in a
constantly changing external environment.
 Reproduction - The process by which living things
produce new organisms of their own kind.
 Metabolism - All the chemical reactions of the life
processes of an organism.

27.  http://suite101.com/article/prokaryotic-and-
eukaryotic-cells-a32332
 http://www.cod.edu/people/faculty/fancher/prokeu
k.htm
 http://animals.about.com/od/animalswildlife101/a/di
ffprokareukar.htm
 http://jgimp.tripod.com/cells.html
 http://fig.cox.miami.edu/~cmallery/150/unity/cell.te
xt.htm