Apedia

A-Level Biology OCR A

Nutrients Phase Extends Stationary Decline Waste Adding Removing

Adding nutrients or removing waste products during different phases of growth affects the shape of the growth curve. Adding nutrients or removing waste during the exponential phase extends it, increasing the target population, while in the stationary or death phase, these changes can slow declines if they are caused by nutrient depletion or waste buildup.

Dodanie składników odżywczych lub usunięcie produktów przemiany materii w różnych fazach wzrostu wpływa na kształt krzywej wzrostu. Dodanie składników odżywczych lub usunięcie odpadów podczas fazy wykładniczej przedłuża ją, zwiększając docelową populację, podczas gdy w fazie stacjonarnej lub śmierci zmiany te mogą spowolnić spadek, jeśli jest on spowodowany wyczerpaniem składników odżywczych lub nagromadzeniem odpadów.

Front Suggest how adding nutrients or removing waste products during different phases would affect the shape of the standard growth curve.
Back Adding nutrients to:
  • Exponential phase extends it so stationary is at higher population, no effect on gradient
  • Stationary phase extends it if the decline is due to nutrients running out
  • Death phase can slow decline if nutrients running out is the issue

Removing waste products at:
  • Exponential phase extends it so stationary is at higher population, no effect on gradient
  • Stationary pha]se extends it if decline was due to waste buildup
  • Death phase can slow decline if there are enough nutrients

Learn with these flashcards. Click next, previous, or up to navigate to more flashcards for this subject.

Next card: Growth culture oxygen levels population enzymes inhibit ph

Previous card: Death describe decline/death phase bacterial growth reproduction ceased

Up to card list: A-Level Biology OCR A