Cov txheej txheem:
Video: Cov pab pawg twg yog cov protists cais ua?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov protists tuaj yeem muab faib ua ib qho ntawm peb pawg tseem ceeb, tsiaj -zoo li, cog -like, thiab kab mob -zoo li. Muab faib ua ib qho ntawm peb pawg yog ua raws li lub cev hom kev yug me nyuam, kev noj haus, thiab kev txav mus los.
Tsis tas li ntawd, peb pawg twg yog cov neeg tawm tsam cais tawm?
Rau kev faib tawm, cov protists tau muab faib ua peb pawg:
- Tsiaj-zoo li protists, uas yog heterotrophs thiab muaj peev xwm txav mus los.
- Cov nroj tsuag zoo li protists, uas yog autotrophs uas photosynthesize.
- Fungi-zoo li protists, uas yog heterotrophs, thiab lawv muaj cov hlwb nrog cov phab ntsa ntawm tes thiab rov tsim dua los ntawm kev tsim cov spores.
Ib sab saum toj no, vim li cas protists suav tias yog pawg Polyphyletic? Teb: Protists raug suav hais tias raws li polyphyletic pawg ntawm cov kab mob raws li lawv cov keeb kwm tsis yog los ntawm cov poj koob yawm txwv. Tej zaum lawv xav txog raws li thawj cov kab mob nyob hauv lub ntiaj teb. Cov no protists raug suav hais tias raws li polyphyletic pawg ntawm cov kab mob raws li lawv qhov tshwm sim tsis yog los ntawm cov poj koob yawm txwv zoo sib xws.
Ib yam li ntawd, nws yog nug, muaj pes tsawg pawg ntawm protists?
Txhua tus ntawm peb pab pawg muaj multicellular hom thiab cov ntsuab thiab liab algae muaj ntau hom kab mob ib leeg. Cov nroj tsuag hauv av tsis suav nrog protists.
Dab tsi yog cov yam ntxwv tseem ceeb ntawm protists?
Cov yam ntxwv ntawm Protists Protists yog eukaryotic tshuaj cov kab mob uas tsis tuaj yeem muab cais ua ib qho cog , tsiaj , los yog fungus. Lawv feem ntau yog unicellular, tab sis qee qhov, zoo li algae, yog multicellular. Kelp, los yog 'seaweed,' yog ib tug loj multicellular protist uas muab zaub mov, vaj tse, thiab oxygen rau ntau underwater ecosystems.
Pom zoo:
Cov pab pawg twg muaj feem ntau ntawm cov celled eukaryotes xws li protozoans?
Protozoa yog ib leeg-celled eukaryotes (cov kab mob uas lawv lub hlwb muaj cov nuclei) uas feem ntau qhia cov yam ntxwv feem ntau cuam tshuam nrog cov tsiaj, tshwj xeeb tshaj yog kev txav mus los thiab heterotrophy. Lawv feem ntau muab tso rau hauv lub nceeg vaj Protista ua ke nrog cov nroj tsuag zoo li algae thiab fungus zoo li dej pwm thiab slime pwm
Cov pab pawg twg ntawm cov ntsiab lus tsuas muaj tsis yog hlau?
Kev piav qhia: Pawg VIIA yog tib pawg hauv lub sijhawm uas txhua lub ntsiab lus yog nonmetals. Cov pab pawg no muaj F, Cl, Br, I thiab At.Lwm lub npe ntawm pab pawg no yog halogen uas txhais tau tias cov khoom siv ntsev
Cov pab pawg twg ntawm cov ntawv teev sijhawm twg yog cov tshuaj chlorine?
Chlorine belongs rau pab pawg neeg ntawm halogens - ntsev tsim - ua ke nrog fluorine (F), bromine (Br), iodine (I) thiab astatine (At). Lawv tag nrho nyob rau hauv kab thib ob los ntawm sab xis ntawm lub rooj sib tham hauv Pawg 17. Lawv cov teeb tsa hluav taws xob zoo sib xws, muaj xya lub tshuab hluav taws xob hauv lawv lub plhaub sab nraud
Dab tsi feem ntau yog pab pawg ua haujlwm thiab vim li cas cov pab pawg no tseem ceeb?
Cov pab pawg ua haujlwm tau txuas mus rau carbonbackbone ntawm cov organic molecules. Lawv txiav txim siab tus yam ntxwv thiab tshuaj lom neeg reactivity ntawm molecules. Cov pab pawg ua haujlwm tsis tshua muaj kev ruaj ntseg dua li cov pa roj carbon monoxide thiab zoo li yuav koom nrog cov tshuaj tiv thaiv
Puas yog cov ntsiab lus uas muaj cov tshuaj lom neeg zoo sib xws yuav pom nyob rau tib lub sijhawm lossis hauv tib pab pawg piav qhia koj cov lus teb?
Qhov no yog vim hais tias cov tshuaj muaj zog nyob ntawm tsis muaj valence electrons. Raws li nyob rau hauv ib pawg tag nrho cov ntsiab lus muaj tib yam tsis muaj valence electron uas yog vim li cas lawv muaj cov tshuaj zoo sib xws tab sis nyob rau hauv ib lub sij hawm tsis muaj valence electron sib txawv uas yog vim li cas lawv txawv nyob rau hauv chemical zog