Chemotherapy is an increasingly effective cancer treatment as the pharmaceuticals are designed to interact with only the cancer cells. How do scientists ensure that the drugs will interact only with the cancer cells?
A) Fashioning compounds to only cross within the cells.
B) Modifying the cell membranes to accept the molecules.
C) Tailoring the molecules to fit specific receptor sites.
D) Empowering the activator molecules with potential energy.

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.

Match each description of an object’s motion with the position-time graph that represents it. not moving moving with constant speed speeding up slowing down

Support mangrove trees out of the water. a) pneumatophores b) prop roots c) sand dunes d) tide supports