The human body has many types of cells. For example, muscle tissue and skin have different kinds of cells. Muscle cells expend a lot of energy during exertion such as lifting something heavy or running. Skin cells
help to protect your body from the outside world. Which statements below explain how a skin cell and a
muscle cell from the same individual are different?
OA. Only one of the cells performs respiration.
B. The cells have different genetic material.
OC. The cells express different genes.
D. Only one of the cells contains a nucleus.
OE. One cell contains more mitochondria than the other.
OF. Each cell started out as an undifferentiated cell.

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.