which of the following statements is/are true with respect to the scientific theory . 1 theories are accepted expectations for how the world works. 2. the theory of evolution is considered the unifying concept in biology 3.theories can help scientists generate new testable hypothesis .4. thoeries are supported by many observations and expierments

Depending on the organism the number of in a cell may change

Diabetes is often suspected when glucose shows up in urine tests. use the model to explain how glucose could be present in urine. why do you think this symptom is especially concerning for young people?

Ras is a g-protein that is activated when a growth factor attaches to egfr. its activation results in the replacement of a gdp molecule with a gtp molecule, thus allowing a signal transduction pathway to be activated. considering the signal pathway illustrated on this page, what is one potential outcome of a mutation in the ras gene that leads to ras protein hyperactivity. be specific.