41. Which of the following statements is correct about mitochondria?
42. The cytoplasm of eucaryotic cells contains an extensive network of minute tubules and filaments, appropriately called
43. Which one of the following cell organelles is enclosed by a single membrane?
44. Consider the following processes which are preparatory to cell division during interphase and choose the correct answer:
1. Replication of DNA takes place
2. The centrioles divide, forming a pair of new centrioles
3. Synthesis of energy-rich compounds which provide energy for mitosis
4. Synthesis of proteins which are later found in the spindle
1. Replication of DNA takes place
2. The centrioles divide, forming a pair of new centrioles
3. Synthesis of energy-rich compounds which provide energy for mitosis
4. Synthesis of proteins which are later found in the spindle
45. Macromolecules can cross the nuclear envelope
46. In eukaryotes, the site of synthesis of most of the ribosomal RNA (rRNA) is the
47. Which of the following is the correct sequence of the different phases of cell division?
1. Anaphase
2. Telophase
3. Prophase
4. Mataphase
1. Anaphase
2. Telophase
3. Prophase
4. Mataphase
48. Who among the following first observed mitochondria as granular structures?
49. Main function of Golgi bodies is
50. In the context of organic evolution, the loss of limbs in snakes is explained by the phenomenon of
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