Biology Final Examination Paper 1: Correct Answers and Explanations, Exams of Biology

Download Biology Final Examination Paper 1: Correct Answers and Explanations and more Exams Biology in PDF only on Docsity! Biology Final Examination Paper 1 Questions with 100% Correct Answers Best Rated 2024 List two organs contained in the abdominal cavity. You’re Answer: Small intestine and large intestine The abdominal cavity contains the stomach, intestines, spleen and liver 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 bio macromolecules 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) You’re Answer: a. False b. True c. False d. True e. False a. False- (ATP is produced, not ADP) b. True c. False- (This process is called endocytosis) 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. Note: Essay answers must clearly be in your own words. Explain what happens to the soft palate during swallowing. Why? You’re Answer: During swallowing, the soft palate in blocked by the tongue. This prevents choking on food or liquids. The upward movement of the soft palate prevents food or liquid from entering the nasal passages during swallowing. Air and food pass in which one of the following areas: Trachea Nasopharynx Oropharynx Alveoli Label the following five items from the diagram: Label B- Label D- Label E- Label F- Label G- You’re Answer: B- Oral cavity D- epiglottis E- Glottis F- Trachea G- Esophagus Label B- Oral Cavity Label D- Epiglottis Label E- Glottis Label F- Trachea Label G- Esophagus From widest to narrowest, the branches of the bronchial tree are: Primary bronchi, secondary bronchi, tertiary bronchi, bronchioles Bronchioles, primary bronchi, secondary bronchi, tertiary bronchi 4. Gall bladder 7. Large intestine 9. Appendix 10. Anus 3: Stomach 4: Gallbladder 7: Jejunum (not small intestine) 9: Appendix (not large intestine) 10: Rectum (not large intestine) Question 11 6.67 / 10 pts. Note: Essay answers must clearly be in your own words. Answer the following essay question: Describe parietal cells and chief cells: name their location, secretions and purposes. You’re Answer: Parietal cells secrete HCL and have a pH of 1.3-3.5. This acidic pH of these cells kills off bacteria that are ingested along with food. Chief cells secrete pepsinogen. HCL converts inactive pepsinogen to active pepsin. The parietal cells (located in the wall of the stomach body) secrete hydrochloric acid, generating a pH of 1.3-3.5. This very acidic pH kills many of the bacteria ingested along with food. In addition, the low pH stops the activity of salivary amylase. The secretion of hydrochloric acid is essential in the activation of pepsin. Chief cells: secrete pepsinogen. Pepsinogen (a pre-enzyme) is secreted by the chief cells in the stomach. Hydrochloric acid converts the inactive pepsinogen (secreted by the chief cells) into the active enzyme pepsin which begins the breakdown of proteins. Name their location Label the following bones of the skeleton from the figure below: 1: 3: 5: 7: 8: You’re Answer: 1. Frontal 3. Maxilla 5. Voter 7. Maxilla 8. Mandible 1: Frontal bone/frontal sinuses 3: Maxilla 5: Voter Label the following five muscles: B: C: E: G: J: You’re Answer: B. temporalis C. orbicularis oculi E. zygomaticus major G. buccinators J. depressor labia inferiors B: Temporalis C: Orbicularis oculi E: Zygomaticus major G: Buccinators J: Depressor labia inferiors When extensor digit rum contracts, what action(s) occurs? A. Elbow extension B. Wrist extension C. Extension of digit 1 D. Extension of digits 2-5 E. A&C F. B&D Would you expect a male to have estrogen in their bloodstream? Explain why or why not. You’re Answer: Yes, both males and females have all of the sex hormones. Adrenal gland is responsible for the opposite sexes hormones. (1) Yes. Both male and female bodies produce “all” the sex hormones. However, the ratios are different. (2) The adrenal glands are largely responsible for producing this “opposite” hormone that the testis would not. B- What sensory information is detected by this type of receptor? You’re Answer: Paining corpuscles- mechanoreceptor A) Parisian corpuscle B) Detects pressure (mechanoreceptor) Match the cell with its single best description, using each description only once. Keratinocytes Fibroblasts Melanocytes Langerhans cells Other Incorrect Match Options: • Detects pain • Detects light touch What is the name and function of the structure below? (Highlighted in blue, also indicated by the arrow) You’re Answer: Sebaceous gland- produces oil in which to prevent hair and skin from drying out. Sebaceous gland (oil gland) produces oil (sebum) to protect the skin and hair from drying. Quiz Score: 134.17 out of 140