Biol 120-02 Practice Questions from Class 1. If you wanted to view a 3D image of a cell, what type of microscope would you need to use? a) Bright field microscope b) Transmission electron microscope c) Scanning electron microscope d) Super optical gizmo microscope 2. a) b) c) d) Which of the following structures is present in members of the Archaea? Nuclear envelope Microtubules Ribosomes Golgi 3. If you view a cell in a TEM image and it has a lot of Smooth ER, what hypothesis could you formulate? a) The cell is a prokaryote b) The cell is making lots of membrane proteins c) The cell is likely a structural component of an animal d) The cell is synthesizing lots of lipids 4. Insulin is a peptide hormone that allows humans to regulate the sugar in their blood stream. It is made in specific cells located in the pancreas. Using our knowledge of biology, we can make human insulin using yeast cells. Trace the pathway that insulin proteins would follow from their site of synthesis to the point they leave the yeast cell so that we can collect it and use it for patient treatment. 5. Why do we call the Golgi apparatus the post-office of the cell? 6. What part of the cell is important for detoxification? Liver cells have a high amount of this structure, but why don’t the toxins damage the cell when first taken up? 7. Males who have Kartagener’s syndrome are infertile because they have non-motile sperm cells. They also tend to develop lung infections more frequently than expected. What cellular defect could cause both issues? 8. Why is it important for cells to compartmentalize functions? Do prokaryotes compartmentalize? How would they do that? 9. During an experiment in the lab, you treat some isolated mouse neurons with an enzyme that degrades proteins, but the plasma membrane remains intact. How might this treatment alter CO2 transport out of the cells? Would Na+ transport across the membrane be affected the same way? 10. Under what conditions would each of the following two ways for glucose to enter a cell occur (ie. what is required for each condition to be met): 1. Facilitated Diffusion 2. Secondary Active Transport 11. How are prokaryotic cell and eukaryotic cell division different? How are they the same? 12. Fill in the following table using your knowledge of Mitosis and the data supplied: G1 # of Chromosomes # of Chromatids pg of DNA/Cell 46 0* 6 G2 prophase metaphase anaphase telophase * I had the terminology incorrect in class. At G1 there are no chromatids. Chromatids only exist as sisters not as singles.
