Discover and Diversity of Cells
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Transcript of Discover and Diversity of Cells
Chapter 7 Section 1 Fall 2005, Pflugerville ISD
Discover and Diversity of Cells
Chapter 7 Section 1 Fall 2005, Pflugerville ISD
Discover and Diversity of Cells
Robert Hooke first to describe the cell. In 1665, he built a microscope and looked at cork or bark cells.He looked at plants, feathers, fish scales, and fly eyes.
Cite: http://www.mcrit.com/COMSOC/persones_tecniques/Robert_Hooke_archivos/Robert_Hooke.jpg
Chapter 7 Section 1 Fall 2005, Pflugerville ISD
Anton van Leeuwenhook- looked at protist under his own microscope.He looked at blood cells and was the first person to see bacteria.He discovered yeast is a single-celled organism.
Discover and Diversity of Cells
Cite: http://www.caribbeanedu.com/images/kewl/biomass01.gif
Chapter 7 Section 1 Fall 2005, Pflugerville ISD
Discover and Diversity of Cells
All organisms are made of one or more cells.The cell is the basic unit of all living things.All cells come from existing cells.
Chapter 7 Section 1 Fall 2005, Pflugerville ISD
Discover and Diversity of Cells
A plant cell is easier to see than an animal cell because of the cell wall.
Chapter 7 Section 1 Fall 2005, Pflugerville ISD
Eukayotic – are the largest cells. These cells have a nucleus and membrane-bound organelles.
Prokaryotic – cells with no nucleus.
Discover and Diversity of Cells
Chapter 7 Section 3 Fall 2005, Pflugerville ISD
The Organization of Living Things
An organism that is singled celled is called unicellular.
Bacteria
Cite: http://www.aradio.co.uk/caption/bacteria.jpg
Chapter 8 Section 4 Fall 2005, Pflugerville ISD
Asexual is a single parent produces offspring that are exactly like the parent.Most single-celled organisms are asexual.
Sexual are two parents produce an offspring that is not exactly like the parents.Sex cells combine and get half of its genes from the mother and half from the father.
Inheritance
Chapter 10 Section 1 Spring 2006 Pflugerville ISD
Life in the Environment
Life in the Environment
• Autotroph – organisms that make their own food. (Examples are plants, algae, and some bacteria)
• Heterotroph – organisms that must get their food from other organisms by eating or absorbing the nutrition. (Examples are animals, fungi, protozoa, slime molds, and some bacteria.)
Fall 2005, Pflugerville ISD
Chapter 10 Section 1 Spring 2006 Pflugerville ISD
The environment is everything that affects an organism.Examples: animals, weather, & plants.Ecology is the study of the relationships between organisms and their environment.
Life in the Environment
Cite: http://www.wappingersschools.org/RCK/staff/teacherhp/johnson/visualvocab/ecology%5b1%5d.jpg
Chapter 10 Section 1 Spring 2006 Pflugerville ISD
Life in the Environment
Biotic (Living): Trees, plants & animals
Abiotic (Nonliving): water, sunlight, air and rocks.
Cite: http://plato.acadiau.ca/courses/idst/matthews/Images/Ecology/Ecology%202.jpg
Chapter 10 Section 1 Spring 2006 Pflugerville ISD
Life in the Environment
Anything that canlive on its own isan organism.
Population- groupof same organism
Organism
Population
Cite: http://www.nashvillezoo.org/komodo.jpg
Cite: http://photophoto.pwp.blueyonder.co.uk/images/indonesia/Komododragons.jpg
Chapter 10 Section 1 Spring 2006 Pflugerville ISD
Community: different populations in same area.Ecosystem: community with nonliving environment.Biosphere: all ecosystems on Earth.
Com
mun
ity
Ecosystem
Life in the Environment
Classifying Organisms into Domains and Kingdoms
Fall 2005, Pflugerville ISD
Archae Bacteria Eukarya
Archaebacteria Eubacteria ProtistaFungiPlanataeAnimalia
Classifying Organisms into Domains and Kingdoms
Fall 2005, Pflugerville ISD
Archaebacteria- are not as common as eubacteria. These cells are single-celled organisms. They have circular DNA and they lack a nucleus and membrane-bound organelles.
Eubacteria- are the most common type of cells. They live everywhere. They don’t have a nucleus and they don’t have membrane-bound organelles.
Classifying Organisms into Domains and Kingdoms
Protista-kingdom that includes all single-celled eukaryotic organisms.
Fungi – kingdom that includes heterotrophic organisms.
Plantae- kingdom that includes multicellular autotrophic organisms.
Animalia-kingdom that contains multicellular heterotrophic organisms.
Fall 2005, Pflugerville ISD