AS BIOLOGY COURSEWORK SECTION C:- ANALYSIS

PROCESSING DATA  CALCULATIONS /remember to show all your working  Use the appropriate “RATE” formula  Use the appropriate unit  Complete a final table showing “Rate of Reaction V concentration”  Include averages if appropriate  Be consistent with numbers eg decimal places

DRAWING GRAPHS  HOW MANY GRAPHS? 2 1 st GRAPH (use average rates and draw 1 line of best fit) 2 nd GRAPH (plot all your runs, changing symbol for each run) then draw in “ERROR BARS” see model

GRAPH WORK CCHECKLIST TTITLE LLABEL AXES (words and units) AACCURATE SCALE AACCURATE PLOTTING LLINE OF BEST FIT IIDENTIFY ANOMOLIES

WRITTEN ANALYSIS STEP 1 (2marks)  DESCRIBE BASIC TREND eg “as the independent variable increases the dependent variable…………” REMEMBER to set in the context of your experiment!!!

WRITTEN ANALYSIS STEP 2 (4marks)  DESCRIBE THE TREND IN DETAIL USING GRAPH 1  Split the line up if there is a change  Label the sections eg “between points A-B, as the concentration increases from……to……, the rate ………from………. to………” REPEAT for other marked sections.

WRITTEN ANALYSIS STEP 3 (6marks)  DESCRIBE ANY CHANGES IN GRADIENT  You can calculate the gradient of your sections from the graph

WRITTEN ANALYSIS STEP 4 (6marks) IINTRODUCE SCIENTIFIC TERMINOLOGY / KEY WORDS AND TERMS eg write about your chosen enzyme as a PROTEIN etc write about how it brought about the chemical reaction write about its role as a biological catalyst

WRITTEN ANALYSIS STEP 5 (8marks)  EXPLAINING THE SHAPE OF YOUR GRAPH  Return to the sections eg A-B; in terms of active sites of enzymes and substrate particles explain why there was a rapid / steady / slow increase in rate as appropriate to YOUR graph REPEAT FOR ANY OTHER MARKED SECTIONS