Video: Electron microscopes puas tuaj yeem pom cov cell nyob?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov electron microscope
Electron microscopes siv beam electrons es tsis txhob beams lossis rays ntawm lub teeb. Cov hlwb muaj sia tsis tuaj yeem soj ntsuam siv ib qho electron microscope vim cov qauv muab tso rau hauv lub tshuab nqus tsev
Ua kom pom qhov no, Cells Koj tuaj yeem pom dab tsi siv lub tshuab ntsuas hluav taws xob?
Cov cell phab ntsa, nucleus, vacuoles, mitochondria, endoplasmic reticulum, Golgi apparatus, thiab ribosomes yooj yim pom nyob rau hauv no kis tau tus mob. electron micrograph.
Tom qab, lo lus nug yog, tsuas yog pom tau nrog lub tshuab ntsuas hluav taws xob? Nrog kev sib kis electron microscope (TEM) thiab generic contrast staining (osmium, uranyl, lead) ntawm ib ntu los ntawm lub xov tooj ntawm tes yuav tsis yog nkaus xwb pom cov organelles tab sis nthuav dav hauv lawv. Yog vim li cas rau qhov sib txawv ntawm kev daws teeb meem yog vim qhov sib txawv wavelength ntawm lub teeb vs hluav taws xob nqaj.
Xav txog qhov no, vim li cas electron microscopes tsuas pom cov hlwb tuag?
Tias yog vim li cas particle beam ntawm electrons siv los illumination tus qauv kuj rhuav tshem cov qauv, txhais tau tias electron microscopes tau 'tsis siv los ua duab nyob hlwb.
Qhov siab tshaj plaws magnification ntawm electron microscope yog dab tsi?
Qhov kev daws teeb meem ntawm electron microscopes yog 0,2nm siab kawg pab tau magnification ib electron microscope tuaj yeem muab yog li 1,000,000x.
Pom zoo:
Cell puas tuaj yeem nyob tsis muaj nucleus?
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HABITAT. Beard worms nyob rau hauv dej hiav txwv pem teb ntawm continental slopes thiab hauv dej hiav txwv trenches. Qee hom tsuas yog pom nyob rau ntawm cov ntoo lwj ze ntawm lub hiav txwv tob tob ntawm qhov tob ntawm 328 txog 32,808 ko taw (100 txog 10,000 meters). Cov dej hiav txwv tob no hu ua hydrothermal vents
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Koj tuaj yeem pom cov hnub qub nyob qhov twg hauv DC?
Qhov Chaw Zoo Tshaj Plaws Mus Saib Hnub Qub Ze ze Washington, DC Smithsonian National Air And Space Museum. Independence Ave. ntawm 6th St., S.W. Rock Creek Nature Center Thiab Planetarium. 5200 Glover Road, N.W. Washington, DC 20015. Observatory Park. 925 Springvale Txoj Kev. Great Falls, VA 22066. C.M. Crockett Park. 10066 Rogues Txoj Kev. Midland, VA 22728. Sky Meadows State Park. 11012 Edmonds Txoj Kev