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Chapter 7 (Bacteria (Living (Big. than virus (Shapes: (rodlike…
Chapter 7
Bacteria
Living
Big. than virus
Shapes:
rodlike
spherical
spiral
what it does:
feeds of a host
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good bacteria
helps make meds
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What bacteria do
Causes things like whooping cough, Lyme disease, Bacteria pneumonia, Black death, and Q fever.
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Fungi
Obtaining food
Fungi are heterotrophs but they absorb food through hyphae that grow into the food source. The digestive chemicals ooze from the hyphae into the food, which breaks down the food into small substances that the hyphae absorb.
Reproduction
Most fungi reproduce both asexually and sexually. Fungi reproduce by making spores, which are surrounded by a protective covering. Fungi produce millions of spores, and only a few will land in suitable living conditions. The spores are produced in fruiting bodies. In some fungi, the visible part of the fungus is the fruiting body. in other fungi, the fruiting bodies are the hyphae that grow upward.
Classification
three major groups of fungi are the club, sac, and zygote fungi, which are classified by the appearance of their reproductive structures.
Cell structure
Ranges in size, all cells surrounded by cell walls and most fungi cells are arranged in structures called hyphae, which are the branching, threadlike tubes that make up the bodies of multicellular fungi. the hyphae are continuous threads of cytoplasm that contain many nuclei.
Virus
disease causing
Very small
Round, rod shaped, or complex.
Goes inside of a cell called a host, shuts down its functions, and reproduces itself.
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Causes things like Influenza, smallpox, cold sore, a cold, and yellow fever.
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yellow fever
pain in abdomen
pain in muscles
chills
fatigue
fever
loss of appetite
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Protists
Plant-like Protists
Diatoms
unicellular protists with glasslike cell walls that float near the surface of lakes or oceans or they attach to rocks in shallow water. Some move my oozing chemicals out of slits in their cell walls and glide in the slime.
Red Algae
Red, multicellular seaweeds that absorb the small amount of light with their red pigments. Substances extracted from red algae are used in many products. Red algae itself is also eaten.
Dinoflagellates
unicellular algae that light up in the water when disturbed at night by a passing boat or a swimmer.
Brown Algae
Brown seaweed that has many plant-like structures. Brown algae is eaten and substances extracted from it are also commonly used.
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Euglenoids
Green, unicellular algae in fresh water that produce food using the sun's energy. However, when sunlight is not available, it will act as a heterotroph and get food from its environment.
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Fungus-like Protists
Slime Molds
brilliantly colored slime molds live in moist, shady places and feed on bacteria and other microorganisms. The cells use pseudopods to feed and creep around. if food is scarce, the cells grow bigger or join together to form a giant, jellylike mass.
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