Which are correct?
A. Computed tomography and magnetic resonance imaging detect cancers of internal organs.
B. Chemotherapeutic drugs are used to kill non-cancerous cells.
C. \( \alpha \)-interferon activates the cancer patients' immune system and helps in destroying the tumour.
D. Chemotherapeutic drugs are biological response modifiers.
E. In the case of leukemia, blood cell counts are decreased.
Choose the correct answer from the options given below:
Which are correct?
A. Computed tomography and magnetic resonance imaging detect cancers of internal organs.
B. Chemotherapeutic drugs are used to kill non-cancerous cells.
C. \( \alpha \)-interferon activates the cancer patients' immune system and helps in destroying the tumour.
D. Chemotherapeutic drugs are biological response modifiers.
E. In the case of leukemia, blood cell counts are decreased.
Choose the correct answer from the options given below:
Show Hint
- D and E only
- C and D only
- A and C only
- B and D only
The Correct Option is B
Solution and Explanation
B. "Chemotherapeutic drugs are used to kill non-cancerous cells" is incorrect. Chemotherapeutic drugs primarily target cancerous cells, though they may also affect healthy cells.
C. "\( \alpha \)-interferon activates the cancer patients' immune system and helps in destroying the tumour" is correct. \( \alpha \)-interferon enhances immune responses against cancer cells.
D. "Chemotherapeutic drugs are biological response modifiers" is true. They help modify the biological response to cancer by affecting the immune system or other mechanisms.
E. "In the case of leukemia, blood cell counts are decreased" is true. Leukemia affects the production of blood cells, leading to a decrease in the number of white blood cells, red blood cells, or platelets. Thus, the correct answer is C and D only.
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B. The gap between the first meiotic division and the second meiotic division is much shorter for males compared to females.
C. The first polar body is associated with the formation of the primary oocyte.
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A bob of heavy mass \(m\) is suspended by a light string of length \(l\). The bob is given a horizontal velocity \(v_0\) as shown in figure. If the string gets slack at some point P making an angle \( \theta \) from the horizontal, the ratio of the speed \(v\) of the bob at point P to its initial speed \(v_0\) is :
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List I List II A. Scutellum II. Cotyledon of Monocot seed B. Non-albuminous seed IV. Rudimentary cotyledon C. Epiblast III. Groundnut D. Perisperm I. Persistent nucellus