100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
samenvatting hoofdstuk 4 - microbiologie $7.61
Add to cart

Summary

samenvatting hoofdstuk 4 - microbiologie

 0 view  0 purchase
  • Course
  • Institution

in dit document vind je een samenvatting van hoofdstuk 4 van microbiologie.

Preview 2 out of 11  pages

  • January 17, 2025
  • 11
  • 2023/2024
  • Summary
avatar-seller
Hoofdstuk 4 morfologie en bouw van bacteriën


Inleiding

lichtmicroscoop:

➢ Vergroting 1000x toe
➢ Kleuringen uitgevoerd
➢ Eenvoudige kleuringen
➔ Bepaalde kleurstoffen (organische verbindingen) binden aan celonderdelen
➔ Gramkleuringen onderscheid maken tss versch types bacteriën

3 reden om te fixeren:

= basische kleurstof (+) -> kristalviolet celmembraan -> trekken elkaar aan

1) Fixeren
2) Bacteriën afdoden
3) Permeabel fixeren

Bacteriële vorm

4 grote categorieën:

1) Kokken
2) Bacillen
3) Spiraalvormige bacteriën
4) Filamenteuze bacteriën

Kokken -> voornamelijk grampositief

➢ Monokokken -> bolronde cellen
➢ Diplokokken -> per 2 soms omgeven door slijmlaag
➢ Streptokokken -> vormen ketens van kokken
➢ Stafylokokken -> vormen trossen
➢ Tetraden -> per 4 vierkant
➢ Sarcina -> acht kokken, kubus

, Hoofdstuk 4 morfologie en bouw van bacteriën


Bacillen: voornamelijk gramnegatief

➢ Staafvormig
➢ Monobacillen -> 1 cel alleenstaande staafjes
➔ Enterobacterales
➢ Streptobacillen -> ketens van staafjes, horizontaal gelegen

Spiraalvormige bacteriën

➢ Spirillen -> dikker -, rigide celwand, uitwendige polaire flagellen
➢ Spirocheten -> langer, dunner en flexibeler, interne zweepdraad
➢ Vibrio -> kommavormig, gedeeltelijke draaiing

Filamenteuze bacteriën

➢ Groeien als vertakte filamenten
➢ Filamenten neiging om uiteen te vallen in kokken of bacillen
➢ Producenten van antibiotica

Afmetingen van bacteriën

➢ Bacteriën kleiner dan eukaryoten
➔ Kleiner want geen kern en organellen
➔ Kleiner want groter opp. per volume -> voedselopname
➔ Kleiner want groter volume -> conc. lager
➔ Kleinere cel want cel sneller delen
➔ Kleiner want schaal -> grotere concentratie

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

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

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

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 alexiepianet. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $7.61. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

59063 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 15 years now

Start selling
$7.61
  • (0)
Add to cart
Added