Ongelooflike opsomings wat al die werk in 'n meer sinvolle manier weerspieel. Die werk is so weerspieel dat mens beter verstaan wat sal lei tot die vermindering van tyd wat bestee moet word aan leer.
Die opsommings is 'n moet he vir biologie graad 10.
DIE CHEMIE VAN LEWE
MOLEKULES: ANORGANIES EN ORGANIESE VERBINGS
Hersiening:
• Materie bestaan uit atome van die elemente.
• Atome word deur chemiese bindings verbind om molekules te vorm
• ‘n Molekule is enige chemiese struktuur wat bestaan uit atome wat deur bindings
aanmekaar gehou word.
• ‘n Verbinding is ‘n chemiese stof wat bestaan uit atome van twee of meer elemente.
Materie ( lewend of nie lewend ) bestaan uit ORGANIESE of ANORGANIESE stowwe wat
voorkom as mineraalelemente en molekules.
Bv. Tafelsout (mineraalelement en NaCl molekule )
ANORGANIESE VERBINDINGS
Gevorm deur
• natuurlike geofisiese prosesse in die omgewing
? • lewende organismes: metabolisme reaksies
Oplosmiddel
Vervoer stowwe in die eksterne en interne omgewing
Water Medium waarin chemiese reaksies kan plaasvind in
Temperatuur beheer
In voortplanting
Ondersteuning en struktuur
Gr 10 1
, BIOLOGY
VasPenNotas: Onderwerp 1
Kom natuurlik as soute in die eksterne
omgewing voor
Mineraalelemente vir Gebrek aan mikro- of/ en makrominerale kan
diere en mense siektes as gevolg van ‘n tekort veroorsaak.
Makrominraalelemente- die wat in groot hoeveelhede benodig word
natrium (Na); kalium (K); kalsium (Ca) en fosfor (P)
Mikromineraalelemente- die wat in klein hoeveelhede nodig is (spoorelemente); wat
as soute opgeneem word (ione)
Yester (Fe); Jodium (I)
Mineraalelemente • Benodig vir hul metaboliese prosesse
wat plante benodig • Word as soute (ione) uit die grond opgeneem
Makromineraalelemente
• Stikstof (N); fosfor (P); kalium (K); kalsium (Ca), magnesium (Mg); swael (S); Yster (Fe)
• (N)- gaan wortels binne as nitrate deur die grond:
o Ontbinding van humus
o Mis en urine van diere
o Stikstoffiksering
o Bemestingstowwe (nitrate of ammoniak)
• (P)- gaan wortels binne as fosfate:
o Ontbinding van humus
o Mis en urine van diere
o Mineraliseringsprosesse van rotse
o Fosfaatbemesting (fosfate)
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller u18076140. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $2.83. You're not tied to anything after your purchase.
