Video: Puas yog tag nrho cov kab mob muaj cov tshuaj ntsiav?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov kab mob capsule yog ib tug loj heev qauv ntawm ntau kab mob . Cov tshuaj ntsiav -uas tuaj yeem pom nyob rau hauv gram negative thiab gram-positive kab mob - txawv ntawm qhov thib ob lipid membrane - kab mob Sab nrauv daim nyias nyias, uas muaj lipopolysaccharides thiab lipoproteins thiab pom tsuas yog nyob rau hauv gram-tsis zoo. kab mob.
Hais txog qhov no, puas yog txhua lub hlwb puas muaj tshuaj ntsiav?
Prokaryotic hlwb muaj tsuas yog: prokaryotic flagella, pili, tshuaj ntsiav , cell phab ntsa , plasma membrane, ribosomes, thiab cheeb tsam nucleoid nrog DNA. Eukaryotic cell ua tsis yog muaj a cell hnab ntawv, raws li cov tsiaj thiab nroj tsuag hlwb tsis pom thiab a tshuaj ntsiav thiab cog cell ua tsis yog muaj phab ntsa ntawm tes.
Ib yam li ntawd, tag nrho cov kab mob puas muaj Glycocalyx? Glycocalyx . Cov glycocalyx yog txheej txheej carbohydrate-enriched uas npog sab nraud ntawm ntau eukaryotic hlwb thiab prokaryotic hlwb, tshwj xeeb tshaj yog kab mob . Ib qho ntxiv loosely txuas glycocalyx muaj uas tuaj yeem raug tshem tawm ntawm lub xovtooj yooj yim dua yog hu ua slime txheej.
Kuj paub, puas yog kab mob capsule Antigenic?
Cov kab mob capsules yog ib qho ntawm cov txheej txheem sab nraud tshaj plaws ntawm cov kab mob nto, uas yuav kiag li puag ncig tag nrho cov antigenic molecules los yog tej zaum yuav coexpressed nrog lwm yam cov kab mob antigens.
Dab tsi yog tsis pom nyob rau hauv tag nrho cov kab mob?
Kab mob yog tag nrho ib leeg xwb. Cov hlwb yog tag nrho prokaryotic tshuaj. Qhov no txhais tau tias lawv ua tsis yog muaj nucleus los yog ib yam lwm cov qauv uas yog surrounded los ntawm daim nyias nyias. Nws yog hu ua chromosomal DNA thiab yog tsis muaj nyob rau hauv ib tug nucleus.
Pom zoo:
Puas yog tag nrho cov kab mob flagella?
Qee cov kab mob muaj ib tus flagellum, thaum lwm tus muaj ntau tus flagella nyob ib puag ncig tag nrho ntawm tes. Txhua tus flagella muaj ib lub filament, muaj li ntawm ib tug protein hu ua flagellin, thiab ib tug nuv, uas txuas cov filament mus rau lub cell ntawm lub cev muaj zog
Muaj pes tsawg guanine bases puas yog 50 lub hauv paus khub ob txoj hlua DNA 100 bases tag nrho muaj yog tias nws muaj 25 adenine bases?
Yog li, muaj tag nrho ntawm 25 + 25 = 50 adenine thiab thymine hauv tag nrho. Qhov ntawd tawm 100− 50 = 50 seem hauv paus. Nco ntsoov tias cytosine thiab guanine daim ntawv cog lus nrog ib leeg, thiab yog li lawv sib npaug ntawm cov nyiaj. Tam sim no peb tuaj yeem faib los ntawm 2 kom tau txais tus lej ntawm guanine lossis cytosine hauv paus
Cov tshuaj tua kab mob twg thaiv cov kab mob protein ntau?
Tetracyclins yog ib hom tshuaj tua kab mob uas suav nrog cov thawj tetracycline nrog rau doxycycline thiab minocycline. Cov tshuaj tua kab mob no khi rau A qhov chaw ntawm 30s ribosome, tiv thaiv tRNA los ntawm kev nqa cov amino acids tshiab. Yog tias tRNA tsis tuaj yeem txuas mus rau ribosome, ces tsis muaj cov proteins tshiab tuaj yeem ua tau
Dab tsi yog qhov cuam tshuam ntawm cov kab mob nroj tsuag uas rhuav tshem tag nrho cov chloroplasts hauv cov nroj tsuag?
Hauv cov xwm txheej ntxhov siab xws li drought thiab kub siab, cov nroj tsuag ntawm tes chloroplasts tuaj yeem ua rau puas tsuaj thiab tsim cov kab mob tsis zoo rau cov pa oxygen (ROS)
Puas yog tag nrho cov kab mob muaj flagellum?
Cov appendages feem ntau siv rau kev mus ncig, txawm li cas los xij, yog flagella (singular: flagellum). Cov tail-zoo li cov qauv nplawm ib ncig zoo li cov kiv cua kom txav cov hlwb los ntawm qhov chaw muaj dej. Yog lawm, flagella yog tam sim no tsis tsuas yog nyob rau hauv cov kab mob thiab archaea, tab sis nyob rau hauv ib co eukaryotic hlwb thiab