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- Which of the following is not a characteristic of cancer cells? a. less cytoplasmic volume than normal cells b. an absence of cyclin c. loss of adhesion to other cells d. loss of control of cell division e. loss of normal control of G1/S phase transition7. Mesothelioma is a rare cancer whose main risk factor is exposure to asbestos. Asbestos are needle-like fibers that are easily inhaled into the lungs. When the needle-like projections penetrate the lining of the lungs, surrounding cells are damaged. Over time, malignant tumors form, resulting in mesothelioma. How do the cells involved in mesothelioma differ from noncancerous cells? A. Mesothelioma cells assort independently while noncancerous cells are highly regulated. B. Damaged noncancerous cells will die whereas damaged mesothelioma cells will continue to divide. C. Mesothelioma cells show anchorage dependence while noncancerous cells do not D. Mesothelioma cells undergo twice as many checkpoints as noncancerous cells.1.The cells of cancerous tumors undergo changes that cause them to bear little to no resemblance to their original cell type. Predict how this will affect the ability of thise cells to perform thier function. A. Increased growth in the thickness in the alveolar tissue of lungs can allow fir more oxygen and can be detrimental if too much gas exchange occurs. B. Increase in abnormal growth in compact bone tissue can cause bones to become stronger. C. Tumor in the bladder can lead to the disproportionate growth of the epithelial tissue that allows the bladder to stretch; therefore, it will create a constant urgency to urinate. D. All choices are correct (I think it's between A and C but not sure which one)
- 6. Type of Cell: Explanation:5) if cells can constantly replace themselves, why is a heart attack (which cardiac muscle cells) so devastating? 8) how might stem cells be used to repair brain or heart damage, even though these cells do not undergo mitosis? 12) why does your hair fall out from chemotherapy?27) Unipotent cells may differentiate into all other cell types of the body.
- 4. Which of the following cells contains a very large amount of myosin and actin filaments? A. Red blood cells B. Myocytes (i.e. muscle cells) C. Lymphocytes D. Bacteria E. Endothelial cells (cells that line the interior surface of blood vessels)d. 6. Which of these cells is likely to have multiple nuclei? *a. skėletal muscle b. cardiac muscle c. smooth muscle d. neuron e. a and c are correct f. a, c, and d are correct 7. Nerve tissue contains cells called a. fibers b. neurons C. glia d. striated cells e. b and c are correct 8. Nerve tissue forms the bulk of the a. brain b. heart c. digestive tract d. vertebrae e. a and d are correct7. Normal/ Healthy undergo programmed cell death (apoptosis) "stick together" by maintaining selective adhesions that they progressively adjust which ensures they remain in their intended location a. True b. False 8. Normal/Healthy differentiate into specialized cells with specific functions meaning they can adopt different physical characteristics despite having the same genome. a. True b. False 9. Within disease cells or aberrated cells proteins or "worker molecules" can be missing or present in unnecessary amounts a. True b. False 10. Within disease cells or aberrated cells messages or signals used for communication are missing or changed a. True b. False 11. Within disease cells or aberrated cells growth is not regulated so the cells grow out of control a. True b. False 12. Within disease or aberrated cells, Changes occur that allow the cells to go places in the body where they do not belong a. True b. False 13. Within disease or aberrated cells, an "immortal" nature allows the…
- 9. Complete the following table, which compares embryonic stem cells to adult stem cells. Embryonic stem cells Adult stem cells Description1. 1 These are abundant, star-shaped cells that form barrier between capillaries and neurons and make exchanges between the two A. Oligodendrocytes B. Astrocytes C. Microglia OD. Ependymal cells 2.They are line cavities of the brain and spinal cord that circulate cerebrospinal fluid with cilia OA. Oligodendrocytes B. Astrocytes C. Microglia D. Ependymal cells 3. Motor (efferent) neurons are cell bodies. They can be found in the PNS and carries impulses from the central nervous system A. 1st sentence is true, 2nd sentence is false B. 1st sentence is false, 2nd sentence is false C. 1st sentence is true, 2nd sentence is true O D. 1st sentence is false, 2nd sentence is true 4. Thalamus refers as the relay station that registers, recognizes pain, temperature and pressure whereas the hypothalamus is considered as the A. Dehydration center B. First center C. Thirsty center D. Thirst center 5. Cerebrospinal fluid (CSF) protects the brain tissue from injury when jolted or hit. Thus, providing…19. The types of human cells shown below are different from one another, even though they all originated from the same fertilized egg and contain the same genetic information. Explain why these genetically identical cells can differ in structure and function. * Cardiac cells Stem cell Blastocyst Enterocytes Fat cells Neuron Red blood cells Epithelial cells Chondrocyte