A Level Biology Respirometer Aqa Required Practical How To Measure Learn this aqa a level required practical method for the investigation into the effect of a named variable on the rate of respiration of cultures of single c. Religious studies. past papers. ocr. religious studies. revision notes on 5.7.14 practical: respirometer for the ocr a level biology syllabus, written by the biology experts at save my exams.
Core Practical 16 Respirometer To Calculate Rq 7 8 Edexcel Mark the starting position of the fluid on the pipette with a fine permanent pen. isolate the respirometer by closing the connection to the syringe and the atmosphere, and immediately start the stopclock. mark the position of the fluid on the pipette at 1 minute intervals for 5 minutes. at the end of 5 minutes open the connection to the outside. You can find all my a level biology videos fully indexed at freesciencelessons.co.uk a level revision videos a level biology in this video, we lo. Open the connection between the syringe and the respirometer. use the syringe to draw the fluid onto the scale at the end furthest from the respirometer 4.mark the starting position of the fluid 5.close the tap to isolate the respirometer from the atmosphere and the syringe and start the stop clock immediately 6. One type is shown in the diagram. using a respirometer to measure the rate of uptake of oxygen. the organisms to be investigated are placed in one tube, and non living material of the same mass in the other tube. soda lime is placed in each tube, to absorb all carbon dioxide. cotton wool prevents contact of the soda lime with the organisms.
Comments are closed.