Wednesday, January 4, 2012

Few MCQ Objective questions on Cancer



1. Movement of cancer cells to a new site where a secondary tumour begins is called 
A. anaplasia.
B. metastasis.
C. promotion.
D. vascularization.

2. Increased blood flow to a cancerous tumor is called 
A. anaplasia.
B. metastasis.
C. malignancy.
D. vascularization.
3. Which of the following is a characteristic of cancer cells? 
A. Differentiated.
B. Contact inhibition.
C. Poor blood supply.
D. Disorganized growth.
4. The process by which new blood vessels supply a growing tumour is 
A. metastasis.
B. promotion.
C. malignancy.
D. vascularization.
5. Which of the following is a characteristic of cancer cells? 
A. Cellular differentiation.
B. Loss of contact inhibition.
C. Decreased oxygen uptake.
D. Inability to actively transport molecules.
6. A proto-oncogene is described as DNA that 
A. causes cancer.
B. causes the vascularization of a tumour.
C. can be mutated into cancer-causing DNA.
D. directly causes uncontrolled cellular growth.

7. A cancer-causing gene is called a(n) 
A. initiator.
B. promoter.
C. oncogene.
D. proto–oncogene.
8. One difference between proto-oncogenes and oncogenes is that oncogenes have the potential to 
A. infect viruses.
B. inhibit cancer cells.
C.produce more hormones.
D. induce cancerous transformations.
9. Use the following information to answer question: 1. Promotion 2. Metastasis 3. Anaplasia 4. Initiation Which of the following is the correct sequence for the development of cancer? 
A. 1, 4, 3, 2
B. 3, 4, 2, 1
C. 4, 1, 3, 2
D. 4, 3, 2, 1
10. Which of the following is capable of changing a proto-oncogene into an oncogene? 
A. virus
B. antibody
C. bacterium
D. lymphocyte
11. Use the following information to answer the question: 1. promotion 2. metastasis 3. vascularization 4. anaplasia Which of the following is the correct sequence to describe the order of development of a cancerous tumor? 
A. 1, 4, 3, 2
B. 2, 1, 3, 4
C. 3, 2, 1, 4
D. 3, 4, 1, 2
12. Which of the following might indicate the presence of a developing skin cancer? 
A. Persistent coughing.
B. Change in bowel habits.
C. Difficulty in swallowing.
D. A sore that does not heal.



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