non- living particles, don't grow respire, develop | ||
a virus that infects a bacterium | ||
inner core rna or dna | ||
outer core of protein of viral structure | ||
recognizes and attaches tp receptors sites on cell's plasma membrane | ||
virus attaches, expels, takes over, reproduce and exit with killing it | ||
integrated "provirus" and exitby exocytosis | ||
1st virus to be identified or tobacco mosaic virus | ||
provirus has lysogenic cycle | ||
have nucleic acid RNA | ||
some undergo photosynthesis or chemosynthesis | ||
placed on bacteria which turns pur or pi depending on the structure of their cell walls | ||
gram negative | ||
gram positive | ||
rod shaped | ||
round shaped | ||
help bacteria survive in harsh conditions | ||
can lay dormant for thousands of years and still survive | ||
kills certain bacteria | ||
spiral shaped | ||
two main groups protozoans and algae | ||
classified by their mobility | ||
move and feed by false fett called psuedopods | ||
move by cilia ex. paramecium | ||
move by a flagella ex. euglena | ||
parasitic protozoans ex. trypanosoma | ||
golden algae (diatoms) unicellular outer shell made of silica | ||
fire algae (dinoflagellates) unicellular responsible for red tide | ||
green algae (spirogyra) multicellular | ||
brown algae (kelp,sargassum) multicellular | ||
red algae (polysiphonia) multicellular |
Ch. 18 - 20 biology viruses and bacteria
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