Photosynthesis rau menyuam yaus

Cov txheej txheem:

Photosynthesis rau menyuam yaus
Photosynthesis rau menyuam yaus
Anonim
Cov nroj tsuag hluas
Cov nroj tsuag hluas

Thaum tib neeg thiab tsiaj txhu noj cov nroj tsuag thiab lwm yam tsiaj ua zaub mov, cov nroj tsuag tuaj yeem ua rau lawv cov zaub mov siv lub teeb thiab cov txheej txheem hu ua photosynthesis. Photosynthesis yog txheej txheem uas cov nroj tsuag ua zaub mov siv carbon dioxide, dej, thiab tshav ntuj.

Photosynthesis yog dab tsi?

Photosynthesis tej zaum yuav yog lo lus loj, tab sis nws tuaj yeem muab faib ua ob lo lus me: "duab" thiab "synthesis." Diam duab txhais tau tias lub teeb thiab synthesis txhais tau tias muab tso ua ke. Thaum cov txheej txheem tuaj yeem nyuaj, nws tuaj yeem sau yooj yim nrog cov lus hauv qab no:

Photosynthesis
Photosynthesis
Photosynthesis equation
Photosynthesis equation

How Photosynthesis Happens

Photosynthesis tshwm sim hauv nplooj ntawm cov nroj tsuag uas chloroplasts nyob hauv hlwb. Muaj ob theem hauv photosynthesis. Thawj theem xav tau lub teeb thiab theem ob tsis. Ua ntej koj tuaj yeem nkag siab txog cov txheej txheem ntawm photosynthesis, koj yuav tsum nkag siab ntau ntxiv txog chloroplasts.

Chloroplast

Chloroplast qauv
Chloroplast qauv

Ib yam li tib neeg, cov nroj tsuag yog tsim los ntawm ntau txhiab lub hlwb. Tsis zoo li tsiaj hlwb, cov nroj tsuag muaj cov qauv tshwj xeeb hu ua chloroplasts qhov chaw photosynthesis tshwm sim.

Chloroplast yog me me oval-puab blobs pom nyob rau hauv cov nroj tsuag hlwb. Qee lub sij hawm cov nroj tsuag tsuas muaj ob peb chloroplasts thaum lwm tus siv tag nrho qhov chaw hauv lub cell. Chloroplast muaj ntau txheej. Cov txheej txheej txheej yog du thaum sab hauv ntawm chloroplast muaj ob peb daim tseem ceeb.

Inside lub chloroplast yog ib pawg ntawm cov hnab ntim uas muaj chlorophyll hu ua thylakoids uas ntab hauv cov kua dej hu ua stroma. Thylakoids zoo li pawg ntawm pancakes. Chlorophyll muab cov nroj tsuag lawv cov xim ntsuab thiab pab cov nroj tsuag nqus lub zog los ntawm lub hnub ci.

Stage 1: Lub Teeb Raws Li Kev Pom Zoo

Thawj theem ntawm photosynthesis hu ua lub teeb nyob rau hauv cov tshuaj tiv thaiv theem. Cov theem no tshwm sim hauv thylakoids ntawm chloroplasts thiab tuaj yeem tshwm sim thaum lub hnub ci.

  1. Tshav ntuj hits chlorophyll hauv cov chloroplasts thiab excites electrons.
  2. Cov electrons zoo siab tawg tawm ntawm chlorophyll.
  3. Vim tias ib qho hluav taws xob cia li tawm ntawm chlorophyll, nws yuav tsum tau hloov. Ib lub molecule ntawm dej tau muab faib ua oxygen (O2) thiab hydrogen ion (H +) hauv thylakoids.
  4. Cov electrons dawb ces raug tshuaj lom neeg los tsim ATP thiab NADPH, uas yog ob lub zog molecules xav tau rau theem ob ntawm photosynthesis.

Stage Ob: Calvin Cycle

theem ob ntawm photosynthesis, hu ua Calvin Cycle, tshwm sim nyob rau hauv lub stroma ntawm chloroplasts. Lub hnub ci tsis xav tau rau Calvin Cycle. Cov pa roj carbon dioxide thiab lub zog los ntawm ATP thiab NADPH tsim cov piam thaj. Glucose yog cov suab thaj yooj yim uas cov nroj tsuag khaws cia ua lub zog thiab tuaj yeem hloov mus rau lwm yam khoom xws li hmoov txhuv nplej siab thiab cellulose uas tseem ceeb rau cov qauv ntawm tes.

  1. Cov pa roj carbon dioxide los ntawm huab cua yog nqus los ntawm qhov hauv cov nplooj ntawm cov nroj tsuag.
  2. Cov pa roj carbon dioxide molecule khi rau cov suab thaj yooj yim hu ua RuBP.
  3. Los ntawm plaub theem tshuaj tiv thaiv, carbon dioxide, thiab RuBP molecule ua ke nrog ATP thiab NADPH los ntawm thawj theem los tsim ib tug molecule ntawm qabzib.

Cov video hauv qab no qhia txog txheej txheem txij thaum pib mus txog thaum xaus:

Photosynthesis tseem ceeb

Photosynthesis yog lub caj qaum ntawm lub neej hauv ntiaj teb. Tib neeg tsis tuaj yeem nyob tsis muaj oxygen. Cov nroj tsuag oxygen tsim thaum lub sijhawm photosynthesis raug tso tawm rau hauv huab cua uas tib neeg ua pa txhua hnub. Raws li tib neeg ua pa hauv oxygen, lawv tso carbon dioxide. Cov nroj tsuag siv carbon dioxide nyob rau hauv cov txheej txheem ntawm photosynthesis. Yog li, cov nroj tsuag muaj lub luag haujlwm los ntsuas cov pa oxygen thiab carbon dioxide hauv huab cua. Tsis tas li ntawd, qee cov nroj tsuag khaws cov piam thaj uas tsim thaum lub sijhawm photosynthesis hauv cov txiv hmab txiv ntoo thiab cov hauv paus hniav. Qee cov txiv hmab txiv ntoo thiab cov hauv paus hniav no yog txiv apples, carrots, strawberries thiab lwm yam khoom noj qab uas tib neeg nyiam noj.

Pom zoo: