Portage BIOD 151 Anatomy and Physiology Final Exam Correct 100

List two organs contained in the abdominal cavity. - ANSWERSThe abdominal cavity contains the stomach, intestines, spleen and liver True or false: The purpose of cellular respiration is to produce ADP - ANSWERSa. False True or False: Peripheral proteins are found on the outer surface of a cell membrane - ANSWERSTrue True or False: Exocytosis is the process that occurs to bring biomacromolecules inside the cell. - ANSWERSFalse True or False: Receptor mediated endocytosis uses a signaling molecule from another cell, binding to the cell membrane to bring about changes within the cell proteins. - ANSWERSTrue True or False: Endocytosis is a passive process. It does not require cellular energy expenditure. - ANSWERSFalse In your own words, discuss Tay Sachs disease. What organelle within the cell is impacted? What are the symptoms of the disease and why do they occur? - ANSWERSTay-Sachs disease impacts the lysosome of the cell because a digestive enzyme is lacking. This leads to toxic lipid build-up in the brain that cannot be broken down. This can lead to disability and death. You are observing two cells under the microscope. They are the same type of eukaryotic cell but one appears much larger. Based on appearance alone, which one would you expect to be carrying out respiration at a more active rate, the larger or smaller cell? Explain why. - ANSWERSThe smaller cell. Cells need to remain relatively small because as a cell expands the amount of surface area relative to the volume of the cell decreases. The smaller cell is more active because relative to its volume, its surface area is larger than a bigger cell. With a larger surface area (relative to its volume) this allows the metabolic processes to occur faster. Explain what happens to the soft palate during swallowing. Why? - ANSWERSThe upward movement of the soft palate prevents food or liquid from entering the nasal passages during swallowing.