In the vancouver learning website there isn't a biology page so there isnt an exact way to see the percentages of biology. i can assume that it is similar to the other science units where you get small sections of biology than a big final  which is the most high achvievng part. the hoemwork and quizzess and tests all add up to it to but it isnt as important as the final. this is just a rough estimate on how you get graded. although this may vary i think i did it correct.