# 32 a model of the structure neccessary for life as proposed by watson and crick

two types of bonds adenine and thymine

cytosine and guanine

3 molecules oyxgen phosphate sugar

#6 a structure containg an organelle that carries out photosynthesis

the source of energy used in photosynthesis light energy is transformed into chemical energy

#5 a substance made of amino acids

a substance made of amino acid is carbon hydrogen carboxyl group

#44 an example of a transition element

26 electrons

26 protons

30 neutrons

iron Fe

#64 organism that has a coelom

digestive tract (from endoderm)

tissue layer lining coel and suspending internal organs (from mesoderm)

body covering (from ectoderm)

#11 organism that carries out aerobic respiration

this organism carries out aerobic respiration because if there was no oxygen there would be no process so it would cycle over again

#67 an organism with a gas bladder

the structure relates to the function because the bladder when at the surface fills up with air so when it is under water it will not waste any energy.