Endocytosis is an energy-using process. The answer is A.
The answer is : 32S has 16 neutrons, whereas 35S has 19 neutrons. If the isotope 32S has 16 protons and 16 neutrons, the isotope 35S will have 16 protons and 19 neutrons.
On a time graph the line will be flat. on a distance the line will increase at a predictible rate
