Humans have a thyroid gland that uses lodine to produce hormones for the body. Since our bodies do NOT make lodine the cells have to pump lodine in from the blood stream against the concentration gradient from low concentration to high. Which type of transport would the
cell use to get this necessary nutrient?
Active Transport
Osmosis
Exocytosis
Simple Diffusion

Cladistics is a way of classifying organisms by examining the characteristics of their ancestors and descendants and depicting the relationships in a cladogram. which of the following best describes a challenge in classifying organisms this way? a. there are millions of species on earth, and a cladogram is not a practical means for classifying all of them. b. it is impossible to tell which organisms are most closely related to each other using a cladogram. c. cladograms are detail-oriented and do not provide a useful understanding of evolutionary relationships. d. there is a limited number of ways to organize the information, so most cladograms end up looking very similar.