A&P I Laboratory Report 2 2021 PDF

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Roberto Rodriguez, DHSc, MS, MD
Lab: The cell...

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A&P I - Laboratory Report 2

2021!

Lab Assessment 5 Part A 1. Label the cellular structures in figure 5.5! 1. Free ribosomes! 2. Secretory Vesicle! 3. Golgi apparatus! 4. Nucleolus! 5. Mitochondrion! 6. Rough Endoplasmic Reticulum (rough ER)! 7. Plasma (cell) membrane! 2. Match the cellular components in column A with the descriptions in column B. Place the letter of your choice in the space provided.! ____A. Chromatin___ 1. Loosely coiled fibers containing protein and DNA within nucleus ! ___G. Mitochondrion____ 2. Location of ATP production for cellular energy ! ___K. Ribosome____ 3. Small RNA-containing particles for the synthesis of proteins! ___L. Vesicle__ 4. Membranous sac formed by the pinching off of pieces of plasma membrane! __I. Nucleolus_____ 5. Dense body of RNA and protein within the nucleus ! ___F. Microtubule____ 6. Part of the cytoskeleton involved in cellular movement ! ___C. Endoplasmic Reticulum____ 7. Composed of membrane-bound canals for tubular transport throughout the cytoplasm! ___B. Cytoplasm____ 8. Occupies space between plasma membrane and nucleus ! ___D. Golgi apparatus (complex)____ 9. Flattened membranous sacs that package a secretion ! ___E. Lysosome___ 10. Membranous sac that contains digestive enzymes ! ___H. Nuclear Envelope____11. Separates nuclear contents from cytoplasm! ___J. Nucleus____ 12. Spherical organelle that contains chromatin and nucleolus! Part D Electron micrographs represent extremely thin slices of cells. Each micrograph in figure 5.6 contains a section of a nucleus and some cytoplasm. Compare the organelles shown in these micrographs with organelles of the animal cell model and figure 5.1. Identify the structures indicated by the arrows in figure 5.6. ! 1. ______Ribosomes______________________________ ! 2. ___Nuclear Envelope______________________________! 3. ___Golgi Apparatus_______________________________! 4. ____Mitochondrion (cross section)____________________! 5. ____Chromatin_____________________________________! 6. ____Mitochondria______________________________ ! 7. ___Endoplasmic Reticulum___________________________! 8. ___Nuclear Envelope______________________________! 9. __Nucleolus___________________________________! 10. ___Chromatin__________________________________! Answer the following questions after observing the transmission electron micrographs in figure 5.6. ! 11. What cellular structures were visible in the transmission electron micrographs that were not apparent in the cells you observed using the microscope? !

Answer:_____The electron microscope allows us to visualize fine structures of the cell, and therefore to see objects much smaller than a cell.__The structures that are apparent with the transmission electron micrographs are: Mitochondria, Ribosomes, Endoplasmic Reticulum, Golgi Apparatus, Nucleolus , chromatin, nuclear envelope_____...