Review the Experiments by Kohler and Lipton Described in Figure

question 48

Multiple Choice

Review the experiments by Kohler and Lipton described in Figure 9.5. What is the key difference between blood serum and blood plasma that affects their ability to help fibroblasts grow in culture?

• A)Serum contains more platelet cells than plasma, and platelet cells promote cell growth.
• B)Molecules found in serum promote cell growth; these molecules are not found in plasma.
• C)Plasma contains more platelet cells than serum, and platelet cells inhibit cell growth.
• D)Molecules found in plasma inhibit cell growth; these molecules are not found in serum.