Which of the following describes a characteristic of cancer cells?
Maintaining specialized cell functions
Loss of contact inhibition
Ability to repair DNA damage
Orderly cell cycle progression
The Correct Answer is B
A. Cancer cells typically lose their specialized functions and characteristics that normal cells have. This loss of differentiation is known as dedifferentiation, where cancer cells become less specialized and more primitive in nature. This allows them to proliferate rapidly and invade surrounding tissues.
B. Contact inhibition refers to the normal process where cells stop dividing when they come into contact with neighboring cells. In cancer cells, this mechanism is disrupted, leading to uncontrolled cell growth and proliferation. Cancer cells continue to divide and grow even when they are in close contact with other cells, which contributes to tumor formation and progression.
C. Cancer cells often acquire mutations that impair their ability to repair DNA damage effectively. This can lead to an accumulation of genetic mutations over time, which is a hallmark of cancer development. While some cancer cells may still have mechanisms to repair DNA damage, they are often less efficient compared to normal cells, leading to genomic instability and further mutation accumulation.
D. Normal cells follow a tightly regulated cell cycle with specific checkpoints that ensure orderly progression through phases such as G1, S, G2, and M phases. In contrast, cancer cells often have dysregulated cell cycle control. They may bypass checkpoints that normally control cell division, leading to uncontrolled proliferation and growth.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. During chemotherapy, many patients experience nausea, vomiting, and changes in taste or appetite. Spicy and highly-seasoned foods can exacerbate gastrointestinal symptoms and may not be well tolerated. It's generally recommended to encourage bland, easy-to-digest foods to help maintain adequate nutrition and reduce discomfort.
B. Loperamide is not used to prevent nausea; rather, it is an antidiarrheal medication used to treat diarrhea, which can be a side effect of chemotherapy. Nausea prevention is typically managed with antiemetic medications such as ondansetron, metoclopramide, or others prescribed based on the patient's specific needs and chemotherapy regimen.
C. Pain management is an essential aspect of caring for oncology patients, including those receiving chemotherapy. Cancer and its treatment can cause pain directly or indirectly (such as from procedures or complications). Regular and thorough pain assessments allow for timely intervention and improvement in the client's comfort and quality of life.
D. Chemotherapy medications are typically administered through central venous access devices (e.g., central lines, PICC lines) rather than through peripheral veins. This is because chemotherapy drugs can be vesicants (causing tissue damage if they leak out of the vein) or irritants to smaller peripheral veins.
Using a larger gauge peripheral line (e.g., 18 gauge) is not standard practice for administering chemotherapy due to the potential risks and complications associated with peripheral administration.
Correct Answer is B
Explanation
A. This option is not directly related to preventing exacerbations in COPD. While managing fluid intake may be important for individuals with certain cardiovascular or renal conditions, it is not a recognized strategy for preventing COPD exacerbations.
B. Influenza vaccination is highly recommended for individuals with COPD. Respiratory infections, such as influenza (flu), can trigger exacerbations in COPD. By receiving an annual influenza vaccine, the client can reduce the risk of developing influenza-related exacerbations and complications.
C. Pursed-lip breathing is a breathing technique that can help improve ventilation and decrease the work of breathing for individuals with COPD. It can be beneficial during exacerbations or episodes of dyspnea (shortness of breath). While it does not directly prevent exacerbations, it is a useful technique to manage symptoms and potentially reduce the severity of exacerbations.
D. The tripod position, where a person leans forward with hands supported on their knees or another surface, can help COPD patients during exacerbations by allowing better chest expansion and improving breathing mechanics. It can relieve dyspnea and help stabilize breathing. While it does not prevent exacerbations, it is a helpful technique during episodes of increased respiratory distress.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.