A respirometer works by absorbing O2 and CO2 (with KOH), decreasing gas volume and pressure, causing liquid in the capillary tube to move towards the test tube; O2 absorbed volume is calculated from distance moved and capillary tube diameter, and O2 absorption rate is proportional to aerobic respiration rate.
Un respi rómetro funciona absorbiendo O2 y CO2 (con KOH), lo que disminuye el volumen y la presión del gas, provocando que el líquido en el tubo capilar se mueva hacia el tubo de ensayo; el volumen de O2 absorbido se calcula a partir de la distancia recorrida y el diámetro del tubo capilar, y la tasa de absorción de O2 es proporcional a la tasa de respiración aeróbica.
| Front | How does a respirometer work? |
|---|---|
| Back | - O2 absorbed by organism in aerobic respiration - CO2 produced absorbed by KOH - volume of gas in tube decreases - pressure in tube decreases - liquid in capillary tube moves towards test tube down pressure gradient - distance moved * diameter of capillary tube = volume O2 absorbed - rate of O2 absorption is proportional to rate of aerobic respiration |
Tags: practicals
Learn with these flashcards. Click next, previous, or up to navigate to more flashcards for this subject.
Next card: Essay sentence writable gcse student layperson
Previous card: Bunsen burner petri dish describe aspects aseptic technique
Up to card list: AQA A Level Biology