DCPIP Study guides, Class notes & Summaries

Biology Edexcel Practicals A Level Questions With Complete Solutions 1. Investigate the effect of caffeine on heart rate of Daphnia - Topic 1 Daphnia of same species and volume Placed on microscopic tray in pond water in bits of cotton and allowed to acclimatise for 5 minutes Then HR counted using tally marks of a sheet of paper for 15 seconds, x4 to give hr/min repeated with unknown conc. of caffeine (blind) 0.0% and distilled water, 0.1% and 0.5% Repeat with each daphnia and with othe...

iGCSE CIE Biology Paper 6 Revision What is an independant variable? - ANSWERS-The variable that is changed by the investigator What is a dependant variable? - ANSWERS-A variable that changes and is measured What is a control variable? - ANSWERS-A variable that should be kept constant so as to not affect the result of the dependant variable How can you make an experiment better? - ANSWERS-Do it 3 times and then take an average. Exclude anomalies from your average. How many decimal plac...

iGCSE CIE Biology Paper 6 Revision What is an independant variable? - ANSWERS-The variable that is changed by the investigator What is a dependant variable? - ANSWERS-A variable that changes and is measured What is a control variable? - ANSWERS-A variable that should be kept constant so as to not affect the result of the dependant variable How can you make an experiment better? - ANSWERS-Do it 3 times and then take an average. Exclude anomalies from your average. How many decimal plac...

Full CPAC 11 write up which achieved passing grade and fulfilled all necessary criteria for Biology Edexcel

AQA A-Level Biology Paper 2 Predicted Paper 2023 Name …………………………………………………………………… Date ………………… 2 hours allowed. You may use a scientific calculator and a ruler with millimetre measurements. Grade boundaries These are VERY rough guesses! Getting a B on this paper does not guarantee you the same mark in the exam. • A* 65% • A 55% • B 45% • C 40% • D 35% • E 30% ...

Biology Edexcel Practicals A Level Questions With Complete Solutions 1. Investigate the effect of caffeine on heart rate of Daphnia - Topic 1 Daphnia of same species and volume Placed on microscopic tray in pond water in bits of cotton and allowed to acclimatise for 5 minutes Then HR counted using tally marks of a sheet of paper for 15 seconds, x4 to give hr/min repeated with unknown conc. of caffeine (blind) 0.0% and distilled water, 0.1% and 0.5% Repeat with each daphnia and with othe...

Biology Edexcel Practicals A Level Questions With Complete Solutions 1. Investigate the effect of caffeine on heart rate of Daphnia - Topic 1 Daphnia of same species and volume Placed on microscopic tray in pond water in bits of cotton and allowed to acclimatise for 5 minutes Then HR counted using tally marks of a sheet of paper for 15 seconds, x4 to give hr/min repeated with unknown conc. of caffeine (blind) 0.0% and distilled water, 0.1% and 0.5% Repeat with each daphnia and with othe...

iGCSE CIE Biology Paper 6 Revision What is an independant variable? - ANSWERS-The variable that is changed by the investigator What is a dependant variable? - ANSWERS-A variable that changes and is measured What is a control variable? - ANSWERS-A variable that should be kept constant so as to not affect the result of the dependant variable How can you make an experiment better? - ANSWERS-Do it 3 times and then take an average. Exclude anomalies from your average. How many decimal places ...

iGCSE CIE Biology Paper 6 Revision What is an independant variable? - ANSWERS-The variable that is changed by the investigator What is a dependant variable? - ANSWERS-A variable that changes and is measured What is a control variable? - ANSWERS-A variable that should be kept constant so as to not affect the result of the dependant variable How can you make an experiment better? - ANSWERS-Do it 3 times and then take an average. Exclude anomalies from your average. How many decimal places ...

Humans produce sweat as a cooling mechanism to maintain a stable internal temperature. Which of the following best explains how the properties of water contribute to this physiological process? - ANSWER The high heat of vaporization of water allows the body to remove excess heat through a phase change of water from liquid to gas A student placed a semipermeable membrane inside a U-shaped channel with two chambers, as shown. The membrane permits the movement of water but not salt. The...