Cyclin-dependent kinases are special molecules that facilitate the progression of a cell through the cell cycle. Many molecules such as p53 regulate the cell cycle. An unregulated cell cycle can lead to rapid growth of the cell that may eventually lead to cancer. In lab, you are working with a […]

1. Compare and contrast the characteristics of the ideal tissue forming the outer surface of the body with that forming the lining of the small intestine. How are they similar and different? What tissues fulfill these needs? 2. If a bone is broken, it will heal in several months. If […]

When a person exercises, muscle tissue produces both fixed acids (lactic acid) and volatile acids (CO2). In terms of the binding of oxygen to hemoglobin, how might this mild acidosis be beneficial to the person?Select one:a. Under acidic conditions the oxygen binds to hemoglobin more tightly so that it is […]

1. Imagine an operon that has three structural genes: Gene 1 makes Protein 1, Gene 2 makes Protein 2, and Gene 3 makes Protein 3. The genes are arranged physically in the operon in the order Gene 1, Gene 2, Gene 3, and transcribed in that order as well. What […]