Prokaryotic organisms have several characteristics in common with eukaryotic organisms. which statement best describes one of these shared characteristics? a. all prokaryotes and eukaryotes have the same basic cell structure and organelles. b. all prokaryotes and eukaryotes have locomotive capabilities that them to avoid danger. c. all prokaryotes and eukaryotes have some ability to regulate what enters and leaves their cells. d. all prokaryotes and eukaryotes have the ability to produce food through photosynthesis.

Aresearcher designed an investigation to test what effect eating different types of food would have on blood insulin levels. she selected 10 male subjects who were all 25 years of age and in good health. the experiment took place over 3 days. at 8: 00 a.m. on each day, the subjects ate a meal consisting of only 1 type of food. they had their blood insulin levels measured after consuming the meal. on day 1 they ate a high fat diet, on day 2 they ate a high protein diet, and on day 3 they ate a high sugar diel what is the independent variable in this experiment? a the age of the subjects b the blood insulin level c the type of food consumed d the time of day the meal was consumed