A cell:
I. Loses the property of contact inhibition
II. Shows uncontrolled proliferation
III. Invades the neighboring tissues
This cell is probably:
1. Mutated
2. Cancerous
3. Dedifferentiated
4. Apoptotic
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following statements is incorrect?
1. MALT constitutes about 50% of the lymphoid tissue in human body
2. The envelope of AIDS virus encloses RNA genome
3. Cancer cells show the property of contact inhibition
4. Chronic use of drugs and alcohol can damage nervous system and liver
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich one of the following is not a property of cancerous cells, whereas the remaining three are?
1. They compete with normal cells for vital nutrients
2. They do not remain confined in the area of formation
3. They divide in an uncontrolled manner
4. They show contact inhibition
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe cells of the malignant tumors exhibit
1. Metastasis
2. Contact inhibition
3. High differentiation
4. Slow proliferation
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyCancer cells differ from normal cells by the
1. Breakdown of regulatory mechanism
2. Loss of the property of contact inhibition
3. Attaining the property of contact inhibition
4. Both 1 & 2
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich one of the following statements is correct?
1. | Patients, who have undergone surgery are given cannabinoids to relieve pain |
2. | Benign tumours show the property of metastasis |
3. | Heroin accelerates body functions |
4. | Malignant tumours may exhibit metastasis |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySelect the correct statement
1. Cells in a malignant tumor do not show contact inhibition
2. Computed tomography scans use non-ionising radiations to study cancer of internal organs.
3. AIDS is a retroviral disease caused by unenveloped HIV.
4. Treatment of AIDS with antiretroviral drugs is completely effective and always prevents death.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyProto-oncogenes are seen in :
1. Normal cells
2. Malignant cells
3. Virus infected cells
4. Cells exposed to X-rays
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA normal gene that codes for proteins that help to regulate cell growth and differentiation and can, due to mutations or increased expression, lead to neoplastic transformation of cells, is called as:
1. Oncogene
2. Proto-oncogene
3. V-onc
4. Psuedogene
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyRead the following statements about cancer and mark the incorrect ones
(i) | Ionising radiations like x-rays and UV rays and non-ionizing radiations like gamma rays cause DNA damage leading to neoplastic transformation. |
(ii) | CT scan uses non-ionizing radiations to accurately detect pathological and physiological changes in the living tissue. |
(iii) | Antibodies against cancer-specific antigents are also used for detection of certain cancers. |
(iv) | Some of the chemotherapeutic drugs are specific for certain cancers. |
1. | (i), (ii) and (iii) | 2. | (i) and (ii) |
3. | (iii) and (iv) | 4. | (ii) and (iv) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology