lqc 17b exam qs

Question 1

what chemical reaction takes place in decomposition

Answer 1

hydrolysis

Question 2

why would 5 piles of leaves be used for a rate of decomposition experiment

Answer 2

give a range of values for independent variable

Question 3

which of these conclusions are correct:
decomposition of beech leaves is faster than ash leaves
bacteria are needed for the decomposition of beech and ash leaves
there is a correlation between decomposition and time

Answer 3

the 3rd

Question 4

explain why there will be a decrease in mass of leaves

Answer 4

bacteria release enzymes for decomposition, the formation of monomers that are soluble, some soluble molecules soak into the ground, respiration of glucose by decomposers and carbon dioxide is released

Question 5

explain what effect an increase in temp would have on the rate of decomposition of leaves

Answer 5

increase in temp would increase rate of decomposition up to the optimum temp, enzymes in decomposition, increase kinetic energy results in increase in number of collisions between enzyme-substrate complexes, increased temp increases rate at which bacteria results, after optimum temp rate of decomposition would stop as enzymes denature