3 major domains of life include 2 different cell types
Sponsored Links
This presentation is the property of its rightful owner.
1 / 33

3 Major Domains of Life include 2 Different Cell Types PowerPoint PPT Presentation


  • 99 Views
  • Uploaded on
  • Presentation posted in: General

Mnemonic device. 3 Major Domains of Life include 2 Different Cell Types. D id D omain K ing K ingdom P hillip P hylum (phyla) C ome C lass O ver O rder F rom F amily G reece G enus (genera) S inging? S pecies. Scientific name.

Download Presentation

3 Major Domains of Life include 2 Different Cell Types

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Mnemonic device

3 Major Domains of Life include2 Different Cell Types

DidDomain

King Kingdom

Phillip Phylum (phyla)

Come Class

Over Order

FromFamily

Greece Genus (genera)

Singing? Species

Scientific

name

Homo sapiens


3 Domains of Life

2 Types of Cells

Eukaryotic

Prokaryotic


3 Major Domains of Life: Archae, Bacteria, Eukaryota2 Cell Types: Prokaryotic & Eukaryotic

Prokaryotic CellsEukaryotic Cells

  • Lack nuclei & most other organelles-Nuclei & other organelles

  • DNA is concentrated in nucleoid-Appear after prokaryotes

  • 1st cells in fossil record-Larger cells (10-100 um)

  • Small cells (1 – 10 micrometers)-Complex cellular organization

  • Simple cellular organization -Mitosis

  • Binary Fission (no mitosis)-Eukarya (Eukaryota)

  • Archae (or Archaebacteria)-Kingdoms: Protista

    Bacteria (or Eubacteria) Fungi

    Plant

    Animal


Prokaryotic Cellsvs. Eukaryotic Cells

Archae & Bacteria

(Eukarya)


Prokaryotic Cells in Domain Archae

  • The scientific community was shocked in the late 1970s by the discovery of an entirely new group of organisms -- the Archae

  • These “bacteria" lived at high temperatures or produced methane clustered together as a group well away from the usual bacteria and the eukaryotes.

  • Because of this vast difference in genetic makeup, people proposed that life be divided into three domains: Eukaryota, Eubacteria, and Archae

  • It is true that most archaeans don't look that different from bacteria under the microscope. However, biochemically and genetically, they are as different from bacteria as you are.


Domain Archae

  • Archaeans include inhabitants of some of the most extreme environments on the planet.

  • Some live near rift vents in the deep sea at temperatures well over 100 degrees Centigrade.

  • Others live in hot springs or in extremely alkaline or acid waters.

  • They have been found thriving inside the digestive tracts of cows, termites, and marine life where they produce methane.

  • They live in the anoxic muds of marshes and at the bottom of the ocean, and even thrive in petroleum deposits deep underground.


Domain Bacteria

  • Bacteria are among the earliest forms of life that appeared on Earth billions of years ago.

  • Scientists think that they helped shape and change the young planet's environment, eventually creating atmospheric oxygen that enabled other, more complex life forms to develop

  • There are thousands of species of bacteria, but all of them are basically one of three different shapes. Some  are rod- or stick-shaped and called bacilli(buh-sill-eye).

  • Others are shaped like little balls and called cocci(cox-eye).

  • Others still are helical or spiral in shape, like the Borrelia pictured at the top of this page.

  • Some bacterial cells exist as individuals while others cluster together to form pairs, chains, squares or other groupings.


Bacterial Structure

  • Basic structure includes a loop of DNA, ribosomes, a plasma membrane, a cell wall, sometimes a capsule.

  • Some bacteria move about using a flagellum.

  • Pili are used for attachment.


Domain EukaryotaKingdom Protista

Diatoms

  • Protists are organisms that are classified into the kingdom Protista.  The protists form a group of organisms that really do not fit into any other kingdom

  • All protists are eukaryotic (cells with

    nuclei). 

  • All protists live in moist environments.

  • Protists can be unicellular or multicellular. 

  • Protists can be microscopic or can be over 100 meters (300 feet) long. 

  • Some protists are heterotrophs, while others are autotrophs.

  • Protists are grouped into three subcategories: animal-like protists, fungus-like protists, and plant-like protists.

Amoeba

Paramecium


Domain EukaryotaKingdom Protista

Plasmodium

(Causes malaria)

Brown Kelp (multicellular)

Causes dysentery (extreme diarrhea)


Multicellularity

  • Multicellularity has been independently attained in 3 groups of protists.

    • Brown algae (Phylum Phaeophyta)

    • Red algae (Phylum Rhodophyta)

    • Green algae (Phylum Chlorophyta)


Red Algae: Pyrrophyta


Domain EukaryotaKingdom Fungi

  • Some Fungi break down dead organic material (decomposers) and thus continue the cycle of nutrients through ecosystems.

  • Most plants could not grow without the symbiotic fungi, or mycorrhizae, that inhabit their roots and supply essential nutrients.

  • Other fungi provide numerous drugs (such as penicillin and other antibiotics), foods like mushrooms, truffles and morels, and the bubbles (through anaerobic fermentation) in bread, champagne, beer.

  • Fungi also cause a number of animal diseases: in humans, ringworm, athlete's foot, and STD’s

  • Plant diseases caused by fungi include: rusts, smuts, and leaf, root, and stem rots, and may cause severe damage to crops.

  • A number of fungi, in particular yeasts, are important "model organisms" for studying problems in genetics and molecular biology.

Budding yeast cell


Traits of Fungi

Most are multicellular

Some like yeasts are unicellular

All are heterotrophic


Examples of Fungi

Bread Mold


Examples of Fungus

Moldy Fruit


Examples of Fungus

Tree Fungus


Kinds of Fungi

Club Fungi - have hyphae that form branches underground. They have club shaped parts that produce spores.


Kinds of Fungi

Sac Fungi – produce spores in sac-like structures.


Helpful Fungi

Food – mushrooms

Used to make cheese – Blue Cheese

Used to make bread rise

Used to make soy sauce from soy beans

Used to break down materials and recycle wastes and dead organisms

Used to make certain drugs (ex. Penicillin)


Mushrooms


Blue Cheese


Soy Sauce


Decaying Tree


Penicillin


Harmful Fungus

Cause food spoilage

Cause plant disease such as rusts, Dutch Elm Disease, and mildew

Cause Human diseases such as Ring Worm, Athlete’s Foot, Thrush, lung Infections, and Yeast Infections

Destroy leather, fabrics, plastics, etc.


Food Spoilage


Dutch Elm Disease


Ringworm


Athlete’s Foot


Thrush


Fungus Destroying Leather


  • Login