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biology terms q1

vocabulary

QuestionAnswer
eyepiece where you view the object. can magnify 10x
stage supports or holds the objects
low power objects medium lens, maginfies 10x
scanning power objective smallest lens. can maginfy 10x
high power objective largest lens. can magnify 40x
coarse objective focuses the image on scanning + low
fine adjustment knob focuses image on high power
diaphram adjusts the amount of light
unicellular organisms that exist as single cells
multicellular oganisms made up pf many cells, and have groups of cells that specialize to peform specific functions
living cells -made of cells -can reproduce through cell division -surounded by a membrane made of lipids -much larger than viruses -contains genetic material in the form of DNA and/or RNA
viruses -not made of many cells -can only reproduce by infecting a host cell -surrounded by a protein shell -much smaller than cells
eukaryotic cells that contain their DNA in a membrane bound nucleus
prokaryotic cells that do not have a membrane bound nucleus
cell the basic unit for structure and function for all living things
tissue a group of identical cells that carry out a specific function
organ a group of tissues that carries out a specific function
organ system a group of organs that work together to carry out a broad set of functions
organism an individual living thing that is capable of reproducing
populaton a group of interbreeding individuals of the same species
community all the interacting populations within a system
ecosystem all the living and non-living things in a system
biosphere all the enviroments on the planet that are inhabited by life
reproduce to make more living things
heredity the passing of charachteristics or traits from parents to offspring
Francesco Redi proposed the hypothesis that files produce maggots and dont appear by spontaneous generation on rotting meat
Created by: leylaWHS
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