Portage Learning A&P 101 Final Exam A&P 1 -Complete Answers (Graded A)

Final Exam - Requires Respondus LockDown Browser + Webcam ● Due No due date ● Points 140 ● Questions 23 ● Time Limit 90 Minutes ● Requires Respondus LockDown Browser Attempt History Attempt Time Score LATEST At ...

Final Exam - Requires Respondus LockDown Browser + Webcam ● Due No due date ● Points 140 ● Questions 23 ● Time Limit 90 Minutes ● Requires Respondus LockDown Browser Attempt History Attempt Time Score LATEST Attempt 1 51 minutes 25 out of 140 * * Some questions not yet graded Score for this quiz: 25 out of 140 * Submitted Apr 16 at 4:31pm This attempt took 51 minutes. Question 1 Not yet graded / 5 pts List two organs contained in the abdominal cavity. Your Answer: the stomach and the spleen The abdominal cavity contains the stomach, intestines, spleen and liver Question 2 Not yet graded / 5 pts True or False? a. The purpose of cellular respiration is to produce ADP. (T or F) b. Peripheral proteins are found on the outer surface of a cell membrane. (T or F) c. Exocytosis is the process that occurs to bring biomacromolecules inside the cell. (T or F) d. Receptor-mediated endocytosis uses a signaling molecule from another cell, binding to the cell membrane to bring about changes within the cell proteins. (T or F) e. Endocytosis is a passive process. It does not require cellular energy expenditure.(T or F) Your Answer: a. False. ATP b. True c. False d. True e. False a. False- (ATP is produced, not ADP) b. True c. False- (This process is called endocytosis) d. True e. False- (Endocytosis is an active process and requires cellular energy) Question 3 Not yet graded / 5 pts Note: Essay answers must clearly be in your own words. 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? Your Answer: Tay-Sachs occurs when a digestive enzyme in lysosomes is missing. Since the digestive enzyme is missing, toxic lipids build up inside the cell which can lead to mental disability and death. (1)Lysosomes (2) buildup of toxic lipids inside the cell (biomacromolecules) (3) disability and death In the genetic disease known as Tay-Sachs, one of the normally present digestive enzymes inside lysosomes is lacking. Thus, a toxic lipid in the brain cells cannot be broken down. The resulting buildup of lipids in these cells can cause intellectual disability and death. Question 4 Not yet graded / 5 pts Note: Essay answers must clearly be in your own words. 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. Your Answer: The smaller cell because as a cell grows larger the ratio of the surface area to volume decreases. The smaller cell is able carry out respiration faster because relative to the larger cell it has a larger surface area compared to its volume and can carry out respiration faster. The 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. Question 5 Not yet graded / 5 pts Note: Essay answers must clearly be in your own words. Explain what happens to the soft palate during swallowing. Why? Your Answer: During swallowing the soft palate moves upward to prevent food and liquid from entering the nasal passages. The upward movement of the soft palate prevents food or liquid from entering the nasal passages during swallowing. Question 6 3 / 3 pts Air and food pass in which one of the following areas: Trachea Nasopharynx Correct! Oropharynx Alveoli Question 7 Not yet graded / 10 pts Label the following five items from the diagram: Label A- __________ Label C- __________ Label E- __________ Label F- __________ Label H- __________ Your Answer: Label A- Nasal Cavity Label C- Soft Palate Label E- Glottis Label F- trachea Label H- Tongue Label A- Nasal Cavity Label C- Soft Palate/ Uvula Label E- Glottis Label F- Trachea Label H- Tongue Question 8 2 / 2 pts From widest to narrowest, the branches of the bronchial tree are: Correct! Primary bronchi, secondary bronchi, tertiary bronchi, bronchioles Bronchioles, primary bronchi, secondary bronchi, tertiary bronchi Tertiary bronchi, secondary bronchi, primary bronchi, bronchioles Secondary bronchi, tertiary bronchi, primary bronchi, bronchioles Question 9 Not yet graded / 5 pts Explain why someone who has hypergastrinemia (excessive secretion of gastrin) might develop gastric/stomach ulcers. Your Answer: Because gastrin stimulates pepsinogen and hydrochloric acid, which can penetrate the mucus layer of the stomach. So someone that secretes excess gastrin has excess pepsinogen and HCL in their stomach, and once the stomach lining has been penetrated an ulcer forms because there is no longer any lining in that area to protect the stomach. Gastrin stimulates the secretions of pepsinogens and hydrochloric acid. Excess amounts would lead to erosion of the stomach lining. Question 10 Not yet graded / 5 pts Look carefully at the diagram below. Label the following 5 organs of the digestive system. To receive credit for the intestines you must label the specific region. 1: ___________ 2: ___________ 5: ___________ 6: ___________ 8: ___________ Your Answer: 1: Liver 2: Pancreas 5: duodenum 6: small intestines 8: ascending colon 1: Liver 2: Pancreas 5: Duodenum (not small intestine) 6: Ileum (not small intestine) 8: Ascending colon (not large intestine) Question 11 Not yet graded / 10 pts Note: Essay answers must clearly be in your own words. Answer the following