CSU BIO1100 unit II assessment

| February 14, 2018

Question 15 out of 5 pointsAssume that Tay-Sachs disease only affects homozygous recessive individuals. If two parents are carriers, what are the chances that their child would have the disease?Selected Answer: Question 25 out of 5 pointsGenes are segments of ________ that code for _________ synthesis.Question 35 out of 5 pointsImagine that a researcher has found an unusual cell that seems to be unable to replicate its DNA. The problem is most likely linked to which phase of the cell cycle?Question 45 out of 5 pointsWhich of the following cells contains the fewest number of chromosomes?Question 55 out of 5 pointsIf a gene sequence in one strand of DNA reads ACCGTTCGA, then when the DNA is unwound and replicated, the newly created strand opposite of this will read ________.Question 65 out of 5 pointsAll normal human body cells contain __________ chromosome(s).Question 75 out of 5 pointsHelen constantly puts off her yearly physical exam, which involves a Pap smear to detect cervical cancer. She makes the statement, “I have nothing to worry about. Cervical cancer doesn’t run in my family and I have a healthy lifestyle.” Is this a valid reason for not getting a physical every year?Selected Answer: Question 80 out of 5 pointsWhich of the following is a gene that is associated with ovarian cancer?Selected Answer: Question 95 out of 5 pointsScientists attempting to develop a new chemotherapy drug would consider that the best candidate to work on would be a drug that ________.Question 105 out of 5 pointsHow do antioxidants reduce the risk of cancer?Cancer and GeneticsUnit II AssessmentIntroductionIn order for organisms to grow, repair, maintain, and reproduce, cells undergo cell division. Sometimes, cells uncontrollably divide, resulting in cancer. In the first part of the Cancer and Cell Division Lab, you will learn about normal cell division and will compare it to cell division that occurs in cancer cells. You will then visit a website to find out more information about cancer. You will learn why it occurs, why it kills, and new treatments that are being tested and used to treat cancer.Objectives1. Explain the process of cancer, the effects on the human body, the various types, and the risk factors involved.2. Explain various treatments for cancer.3. Explain the various stages of mitosis.MaterialsNo extra materials will be required to complete this lab other than internet service.Directions· Go to the following website:.mhhe.com/biosci/genbio/virtual_labs/BL_23/BL_23.html”>http://www.mhhe.com/biosci/genbio/virtual_labs/BL_23/BL_23.html· Follow the steps under the Procedure section.· Type all answers directly on the data sheet.· Select Save As, and save this document using your last name and student ID as the file name.· Upload the data sheet as a .doc, .docx, or rtf file when you are finished.While viewing the video, answer the following questions. Each question is worth 2 points.Total: 4 points1. In which stage of cell division is the DNA copied?2. During which stage of mitosis do the chromosomes line up in the middle?After viewing the video, click on the Information tab in the bottom right corner. Answer the following questions. Each question is worth 2 points.Total: 6 points1. In which of the cancer types listed, are males not at risk of developing?2. Cigarette smoke is a major risk factor for which type of cancer listed?3. The risk for which type of cancer increases after the age of 55?Continue following the directions under the Procedure Section, and complete the following table. The table isworth 17 points.InterphaseProphaseMetaphaseAnaphaseTelophase% of Cells Dividing% of Cells at restNormal LungsCancerous LungsNormal StomachCancerous StomachNormal OvaryCancerous OvaryContinue following the directions under the Procedures section and answer the following questions. Each question is worth 3 points.Total: 9 points1. Based on your data and observations, what are some of the Differences between normal cells and cancer cells?2. Which type of cancer shows the most aggressive growth? Explain your answer.3. When studying cell division in tissue samples, scientists often calculate a mitotic index, which is the ratio of dividing cells to the total number of cells in the sample. Scientists often calculate the mitotic index to compare the growth rates of different types of tissue. Which type of tissue would have a higher mitotic index, normal tissue or cancerous tissue? Explain.Go to:.cancer.org/”>http://www.cancer.org/Click on: Learn About Cancer. View each section contained in the menu under Learn About Cancer Topics and answer the following questions. Each question is worth 2 points.Total: 14 points1. How many people in the US get cancer each year?2. What causes cancer?3. Since there are many different types of cancer, how is cancer named?4. List 2 signs or symptoms of breast cancer.5. Can males development breast cancer?6. What is the most common type of cancer?7. List two ways you could get involved and help fight against cancer.

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