You treat cells in the lab with hydrogen peroxide to induce oxidative stress and observe the following: cell and organelle swelling, increased presence of neutrophils and a DNA smear pattern in a gel electrophoresis. Which one of the following pathways of cell death are induced in these cells? O Necrosis O Apoptosis Autophagy

You treat cells in the lab with hydrogen peroxide to induce oxidative stress and observe the following: cell and organelle swelling, increased presence of neutrophils and a DNA smear pattern in a gel electrophoresis. Which one of the following pathways of cell death are induced in these cells? O Necrosis O Apoptosis Autophagy

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter5: Membranes And Transport

Section: Chapter Questions

Problem 1ITD: Some cancer cells are insensitive to typical chemotherapy. Research into the mechanisms underlying...

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Consider the proper progression of the cell cycle. In one of the first steps, the __ Select one: a. cell membrane breaks down as the micrtubulin filaments dissolve b. cell membrane breaks down as the intermediate filaments dissolve c. nuclear membrane breaks down as the actin filaments dissolve d. cell membrane breaks down as the actin filaments dissolve e. nuclear membrane breaks down as the intermediate filaments dissolve
Which of the following is not true about phagocytosis?(a) It is a form of exocytosis.(b) It is energy dependent.(c) It only occurs in eukaryotes.(d) A larger cell engulfs a smaller cell that will eventually bepresent in an internal vacuole.(e) It requires fusion of internal lysosomes to engulfed vac-uole for contents to be digested
Which of the following would not happen if G₁ checkpoint was mutated or damaged in a cell? a The cell would not be large enough. b The cell would not continue on to the S stage. c The cell would not have enough nutrients to enter the next stage. d The cell would die.
Biopsies from aggressive cancers often have cells that contain several nuclei per cell when viewed through a microscope. Which scenario could explain how such a multinucleated cell might have come to be? (a) The cell underwent repeated mitosis with simultaneous cytokinesis. (b) The cell had multiple S phases before it entered mitosis. (c) The cell underwent repeated mitosis, but cytokinesis did not occur. (d) The cell underwent repeated cytokinesis but no mitosis. (e) The cell actually went through meiosis and not mitosis.
For the cell cycle to progress normally, the protein ________ must be destroyed by____. Select one: a. cyclin, a protease b. nuclear membrane, phosphorylation c. cdk, a protease d. cyclin, apoptosis e. cdk, apoptosis
Cancer cells may be more susceptible than normal cells to mitotic catastrophe in response to chemotherapeutic drugs because of which of the following (select all that apply)? A. They express unique receptors for those drugs on their surface B. They may be resistant to apoptosis C. Cancer cells have more efficient DNA repair mechanism than normal cells. D. Only cancer cells are actively dividing E. They may lack key G2/M checkpoint controls
Some cancer cells are insensitive to typical chemotherapy. Research into the mechanisms underlying this insensitivity uncovered an ability by these cells to pump the treatment drug out of the cell against its concentration gradient. Additional drugs have been developed that inhibit the pump, thus trapping the chemotherapeutic agent inside to promote cancer cell destruction. The Figure shows what happens when two types of cells are treated with a 3H-labeled anti-cancer drug, paclitaxel. Which set of cells (A or B) would be described as resistant to the cancer treatment? Explain your answer. What type of transport are the resistant cells using?
Some cancer cells are insensitive to typical chemotherapy. Research into the mechanisms underlying this insensitivity uncovered an ability by these cells to pump the treatment drug out of the cell against its concentration gradient. Additional drugs have been developed that inhibit the pump, thus trapping the chemotherapeutic agent inside to promote cancer cell destruction. The Figure shows what happens when two types of cells are treated with a 3H-labeled anti-cancer drug, paclitaxel. Two additional drugs, imatinib and nilotinib, are evaluated for their ability to overcome the cancer cells ability to pump out the chemotherapeutic agent. An asterisk (*) indicates a statistically significant difference from the cells receiving paclitaxel alone. Do the additional drugs seem to the effective in over-coming the pump? Which set of graphs (A or B) best supports your answer? Explain your answer.
Applying Clinical Reasoning Kevin S. and his wife have been trying to have a baby for the past 3 years. On seeking the help of a fertility specialist, Kevin learned that he has a hereditary form of male sterility involving nonmotile sperm. His condition can be traced to defects in the cytoskeletal components of the sperms flagella. As a result of this finding, the physician suspected that Kevin also has a long history of recurrent respiratory tract disease. Kevin confirmed that indeed he has had colds, bronchitis, and influenza more frequently than his friends. Why would the physician suspect that Kevin probably had a history of frequent respiratory disease based on his diagnosis of sterility from nonmotile sperm?
Which of the following is found both in eukaryotic and prokaryotic cells? a. nucleus b. mitochondrion c. vacuole d. ribosome
A normal, healthy cell is in contact with many other cells. Using this information alone, which of the following are likely true? (select all that apply) The cell has low levels of MPF The cell is in S phase The cell is in G2 phase The cell is not dividing
I struggle with this question. Can you help me, please? Naked viruses typically exit the cell via this/these processes (may choose more than one). a. membrane fusionb. lysis c. exocytosis d. budding Note: lysis is the correct answer but there is more answer on the question.