Human organ systems
April 8, 2011
Next week we will start our unit on human organ systems. We can’t learn about organs until we know a little bit about cells. I want you to look up information on any single-celled organism and tell me about it. Be sure to like your sources or you won’t receive bonus.
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April 11, 2011 at 3:39 pm
Algae can make food by photosynthesis because they contain green chloroplasts and they lose their chloroplasts in the dark. The malaria parasite first enters its human host through the bite of the Anopheles mosquito. Then it multiplies and affects the liver.
http://www.infoplease.com/dk/science/encyclopedia/single-celled-organisms.html
April 14, 2011 at 1:31 am
Amoebae are a predatory single-celled organism. This prganism does not have a fixed shape. Amoebae live in water creep along rotting vegetation. They hunt the weaker and smaller. They have jelly-like tentacles to protect themselves.
http://www.infoplease.com/dk/science/encyclopedia/single-celled-organisms.html
April 14, 2011 at 2:12 am
Some protoctists obtain food by invading other organisms and living as parasites. The malaria parasite first enters its human host through the bite of the Anopheles mosquito. Once inside, it multiplies inside the blood and may infect the liver. The parasite causes malaria fever, a disease that may be fatal.
http://www.infoplease.com/dk/science/encyclopedia/single-celled-organisms.html#ESCI285SINORG004#ixzz1JSXivYmp
April 15, 2011 at 12:28 am
Slime moulds start out as amoebalike cells hunting for food in damp habitats. Later, the cells join together to build spore-producing structures.
http://www.infoplease.com/dk/science/encyclopedia/single-celled-organisms.html
April 15, 2011 at 1:36 pm
Lens-maker Antoni van Leeuwenhoek made the first practical microscope in 1671. With it, he observed bacteria and protoctists, which he called “animalcules”.
April 15, 2011 at 1:43 pm
Algae are simple organisms that make food from sunlight by photosynthesis, but lack the roots, stems, and leaves of proper plants. Algae are found in all water environments, and some can live on land, forming a thin, greenish layer on damp surfaces. Algae make up most of the oceans’ PHYTOPLANKTON – microscopic life forms photosynthesizing at the ocean surface. Larger marine algae called seaweeds are made of many cells, with structures called fronds that look similar to plant leaves.
April 19, 2011 at 1:00 am
Amoeba is a single cell that does not have a fixed shape. It hunts smaller cells such as bactaria. Slime moulds start as amoebalike cells hunting for food in damp habitats.