Cells A Characteristic of All Living Things

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Presentation transcript:

Cells A Characteristic of All Living Things Non-Living Family: flickr.com/photos/afroswede/327940628 ; Other images provided by Science: A Closer Look (Maryland), pages 28 and 30 (MacMillan/McGraw-Hill, 2008)

Generally Accepted Characteristics of All Living Things They reproduce (parents and offspring) They grow and develop (life cycles) They obtain and use energy (eat or make their own food) They respond to their environment (move) AND Are made of one or more units called … CELLS

Cells of Multicellular Organisms Animal Cells Plant Cells Images provided by Science: A Closer Look (Maryland), pages 28 and 30 (MacMillan/McGraw-Hill, 2008)

Cells All living things are made of cells. Multicellular organisms are made of different types of cells. Different types of cells look different and do different things. Specialized cells group together to form a tissue and to perform a specific function (i.e., potato cells form potatoes and muscle cells form muscles)

Levels of Organization Images provided by http://en.wikipedia.org/wiki/Image:Illu_muscle_tissues.jpg and Science: A Closer Look (Maryland), Toolkit CD and page 30 (MacMillan/McGraw-Hill, 2008) Levels of Organization Cells: The basic building block. Tissues: Cells that work together to perform a function. Organs: Tissues that work together to perform a function. Organ System: Organs that work together to perform a function.

Images provided by Science: A Closer Look (Maryland), Toolkit CD and page 30 (MacMillan/McGraw-Hill, 2008) Chloroplasts with chlorophyll Wall Membrane Plant Cells Plant cells have a cell membrane and a more regular shape due to a stiff cell wall. They have chloroplasts with chlorophyll to help plants make their own food.

Plant Cell Example Pine Needle Cells http://upload.wikimedia.org/wikipedia/en/c/ce/Pinus_pinea.jpg Copyright CNAP, University of York; http://www.epobio.net/photos/cross_sec_pine.jpg Cross Section of Pine Cells

Plant Cell Example Potato Cells http://www.uleth.ca/bio/bio1010/bio1010.htm http://upload.wikimedia.org/wikipedia/commons/c/c8/Potato_and_cross_section.jpg

Plant Cell Example Onion Cells http://upload.wikimedia.org/wikipedia/commons/1/1b/Onions.jpg http://www.uleth.ca/bio/bio1010/bio1010.htm

Plant Cell Example Elodea Cells http://en.wikipedia.org/wiki/Image:Elodea_canadensis2_ies.jpg http://www.uleth.ca/bio/bio1010/bio1010.htm

Images provided by Science: A Closer Look (Maryland), Toolkit CD and page 28 (MacMillan/McGraw-Hill, 2008) Animal Cells The cells of humans and other animals have a cell membrane, but they do not have a stiff cell wall. They cannot make their own food and do not have chloroplasts. However, there is a greater variety to their shapes.

Animal Cell Example Blood Cells http://upload.wikimedia.org/wikipedia/commons/2/24/Red_White_Blood_cells.jpg http://upload.wikimedia.org/wikipedia/commons/e/e6/Bleeding_finger.jpg White Blood Cell Red Blood Cell Platelet Red Blood Cells

Muscle cells must stretch and grow. http://en.wikipedia.org/wiki/Muscle http://upload.wikimedia.org/wikipedia/commons/0/0e/Weightlifting.jpg http://upload.wikimedia.org/wikipedia/commons/7/74/Heart.jpg

Nerve cells send signals to the brain from the body. http://en.wikipedia.org/wiki: Smi32neuron http//:brainmaps.org http://upload.wikimedia.org/wikipedia/commons/b/ba/Nervous_system_diagram.png

Skin (Epithelial) Cell cover the body in a thin layer Skin (Epithelial) Cell cover the body in a thin layer. They regenerate quickly. http://sac.edu/HomePages/nigro_dan/Cheek_cell.jpg http://upload.wikimedia.org/wikipedia/commons/a/a9/Chica_cachetona.jpg

Brain Cells http://en.wikipedia.org/wiki/Image:Brain_090407.jpg http://www.nih.gov/ http://en.wikipedia.org/wiki/Image:Brain_090407.jpg

Animal or Plant Cell? Plant Cell: Elodea http://en.wikipedia.org/wiki/Image:Chloroplasten.jpg Plant Cell: Elodea

Animal or Plant Cell? Animal Cell: Nerve http://en.wikipedia.org/wiki/Image:GFPneuron.png Animal Cell: Nerve

Animal or Plant Cell? Plant Cell: Spirogyra http://upload.wikimedia.org/wikipedia/commons/1/18/Spirogyra.JPG Plant Cell: Spirogyra

Animal or Plant Cell? Animal Cell: Muscle Permission granted by Rhodes EMU at http://www2.ru.ac.za/administrative/emu/gr10p7.htm Animal Cell: Muscle

Animal or Plant Cell? Plant Cell: Potato Hedges, Kathryn. http://pics.tech4learning.com Plant Cell: Potato

Animal or Plant Cell? Plant Cell: Onion Hedges, Kathryn. <http://pics.tech4learning.com> Plant Cell: Onion

Animal or Plant Cell? Animal Cell: Kidney http://www.uoguelph.ca/zoology/devobio/210labs/epithelial1.html Animal Cell: Kidney

Cell Review All living things are made of cells. Multicellular organisms are made of different types of cells. Different types of cells look different and do different things. Specialized cells group together to form a tissue and to perform a specific function (i.e., potato cells form potatoes and muscle cells form muscles)