PORTAGE LEARNING BIOD 151 FINAL EXAM QUESTIONS & ANSWERS UPDATED MAY 2023 WITH (100% CORRECT MARKIN SCHEME)
Label the following five muscles:
C. orbicularis oculi
E. zygomaticus major
J. depressor labii inferioris
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.
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?
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.
(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.
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.
The smaller cell would carry out respiration at a more active rate. This is because of the increased surface area compared to larger cells.
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.
Explain what happens to the soft palate during swallowing. Why? Your 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:
Label the following five items from the diagram:
Label B- Label D- Label E- Label F- Label G-
B- oral cavity D- epiglottis
Label B- Oral Cavity Label D- Epiglottis Label E- Glottis Label F- Trachea Label G- Esophagus
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