Explain the work on The mendel on Garden pea​

Assume that a student is given two different models of bacteria, with one model consisting of big bacteria and the other consisting of small bacteria. how can the student demonstate the theory of endosymbiosis using the models

When listening the levels of orginization in orginisims from the smallest to most complex , which level is just below organs in complexity

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes