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Cells

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abby corcoran

on 21 November 2014

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Transcript of Cells

What is the cell theory?
Cell theory is a scientific theory which describes
the properties of cells. The cell theory has three
basic units to it.
CELLS
A prokaryote is a single-celled organism that lacks a membrane-bound nucleus, mitochondria, or any other membrane-bound organelles
Prokaryotic
A eukaryote is any organism whose cells contain a nucleus and other structures enclosed within membranes. Eukaryotes are formally the taxon Eukarya or Eukaryota
Eukaryotic
All living organisms are composed of cells. They may be
unicellular
or
multicellular.
Theory #1
The cell is the basic unit of living things.
All cells come from pre-existing cells. All cells reproduce.
Theory #3
by:Kaycee Hall and Abby Corcoran
Nucleus
Plant Vs Animal Cell
Plant Cells Have:

Plant Cell
Cell wall:
Present (formed of cellulose)
Shape:
Rectangular (fixed shape)
Vacuole:
One, large central vacuole taking up 90% of cell volume.
Centrioles:
Only present in lower plant forms.
Chloroplast:
Plant cells have chloroplasts because they make their own food.
Cytoplasm:
Present
Endoplasmic Reticulum:
Present
Ribosomes:
Present
Mitochondria:
Present
Plastids:
Present
Golgi Apparatus:
Present
Plasma Membrane:
Cell wall and a cell membrane
Microtubules/ Microfilaments:
Present
Flagella:
May be found in some cells
Lysosomes:
Lysosomes usually not evident
Nucleus:
Present
Cilia:
It is very rare

Animal Cells Have:

Animal Cell
Cell wall:
Absent
Shape:
Round (irregular shape)
Vacuole:
One or more small vacuoles (much smaller than plant cells)
Centrioles:
Present in all animal cells
Chloroplast:
Animal cells don't have chloroplasts
Cytoplasm:
Present
Endoplasmic Reticulum:
Present

Ribosomes:
Present
Mitochondria:
Present
Plastids:
Absent
Golgi Apparatus:
Present
Plasma Membrane:
Only cell membrane
Microtubules/ Microfilaments:
Present
Flagella:
May be found in some cells
Lysosomes:
Lysosomes occur in cytoplasm
Nucleus:
Present

Plant Cell:
Plant cells
are eukaryotic cells that differ in several key aspects from the cells of other eukaryotic organisms
Animal Cell:
An
animal cell
is a form of eukaryotic cell that makes up many tissues in animals
the central and most important part of an object, movement, or group, forming the basis for its activity and growth
Nucleus
Mitochondria
an organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. It has a double membrane, the inner layer being folded inward to form layers (cristae)
Mitochondria
Vacuole
Vacuole
a space or vesicle within the cytoplasm of a cell, enclosed by a membrane and typically containing fluid
Golgi Body
Golgi Body
a complex of vesicles and folded membranes within the cytoplasm of most eukaryotic cells, involved in secretion and intracellular transport
Endoplasmic Reticulum
Endoplasmic Reticulum
a network of membranous tubules within the cytoplasm of a eukaryotic cell, continuous with the nuclear membrane. It usually has ribosomes attached and is involved in protein and lipid synthesis
Cytoplasm
Cytoplasm
the material or protoplasm within a living cell, excluding the nucleus
Cell Membrane
Cell Membrane
the semipermeable membrane surrounding the cytoplasm of a cell
Cell Wall
Cell Wall
a rigid layer of polysaccharides lying outside the plasma membrane of the cells of plants, fungi, and bacteria. In the algae and higher plants, it consists mainly of cellulose
Ribosomes
a minute particle consisting of RNA and associated proteins, found in large numbers in the cytoplasm of living cells. They bind messenger RNA and transfer RNA to synthesize polypeptides and proteins
Ribosomes
Chloroplasts
(in green plant cells) a plastid that contains chlorophyll and in which photosynthesis takes place
Chloroplasts
Theory #2
Resources
www.wikipedia.com
www.youtube.com
www.googleimages.com
www.definition.com
www.plantvsanimalcell.com
difference between plant and animal cell
Red Blood Cells

White Blood Cells
Although your white blood cells account for only about 1 percent of your blood, their impact is significant.White blood cells are essential for good health and protection against illness and disease
Red blood cells play an important role in your health by carrying fresh oxygen throughout the body. The oxygen gives your blood its bright red color.
Red Blood Cells
White Blood Cells
Cancer Cells
Cancer Cells
Cancer cells are cells that grow and divide at an unregulated, quickened pace. Although cancer cells can be quite common in a person they are only malignant when the other cells (particularly natural killer cells) fail to recognize and/or destroy them
Sperm Cell
The term sperm refers to the male reproductive cells and is derived from the Greek word (σπέρμα) sperma (meaning "seed")
Sperm Cell
Leaf Cell
Palisade cells are plant cells found within the mesophyll in leaves of many plants, right below the upper epidermis and cuticle. They are vertically elongated, a different shape from spongy mesophyll cells beneath them in the leaf. Their chloroplasts absorb a major portion of the light energy used by the leaf
Leaf Cell
Pollen Cell
Pollen is a fine to coarse powder containing the microgametophytes of seed plants, which produce the male gametes (sperm cells)
Pollen Cell
Nerve Cell
Nerve cells are the primary cells in the nervous system. They are responsible for relaying electrical messages to cells and tissues in other organ systems. This article discusses the functions and structures of nerve cells in the human body
Nerve cell
Skin cells
Skin Cells
The epidermis forms the surface of the skin. It is made up of several layers of cells called keratinocytes.
Different Types of Cells!
There are many different cells other than the plant and animal cell. There are over 100 000 billion cells. Here are just a few.
Full transcript