PORTAGE LEARNING BIOD 151 FINAL EXAM QUESTIONS & ANSWERS UPDATED SEPTEMBER 2023 WITH (100% CORRECT MARKING SCHEME)

PORTAGE LEARNING BIOD 151 FINAL EXAM QUESTIONS & ANSWERS UPDATED SEPTEMBER 2023 WITH (100% CORRECT MARKING SCHEME) Label the following five muscles: B: C: E: G: J: Your Answer: B. temporalis C. orbicularis oculi E. zygomaticus major G. buccinator J. depressor labii inferioris B: Temporalis C: Orbicularis oculi E: Zygomaticus major G: Buccinator J: Depressor labii inferioris Would you expect a male to have estrogen in their bloodstream? Explain why or why not. Your Answer: Yes, both males and females have all of the sex hormones. Adrenal gland is responsible for 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. 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 disease impacts the lysosome of the cell. This leads to a toxic buildup of toxins in the brain. This can lead to 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.