Biology Practice: The Cell (Mock Test 5 - Challenge Level)
1. Reasoning: If a scientist discovers an organelle with its own circular DNA and 70S ribosomes, which theory does this discovery most strongly support?
2. Scenario: A cell's lysosomes suddenly rupture, releasing all their enzymes into the cytoplasm. What is the most likely outcome?
3. Why do the flight muscles of a migratory bird contain thousands of mitochondria, while its skin cells have very few?
4. Which of these is a direct consequence of the "9 + 0" arrangement found in centrioles?
5. Statement: "The inner mitochondrial membrane is folded into cristae." What is the biological advantage of this structure?
6. A poison that inhibits the function of 'Dynein arms' would most likely paralyze which of the following?
7. Why are Leucoplasts generally found in the roots or underground stems of plants?
8. Which of these inclusions would a plant use specifically to discourage animals from eating its leaves?
9. Reasoning: Why is the Smooth ER (SER) highly developed in the cells of the liver?
10. In the absence of 'Catalase' enzyme, which chemical byproduct would reach toxic levels inside the cell?
11. If you remove the 'Centrosome' from an animal cell, which process will be most directly affected?
12. The 'Basal Body' of a flagellum is structurally identical to which other cell part?
13. Which cytoskeletal element is primarily responsible for 'Amoeboid movement' and muscle contraction?
14. What is the significance of the 70S ribosome being present in Mitochondria and Chloroplasts?
15. Why do mature fruits like tomatoes change from green to red?
16. The "Oxysomes" ($F_0-F_1$ particles) are found on the surface of:
17. Which of these is NOT a function of the Cytoskeleton?
18. The 'Middle Lamella' is a layer that connects two plant cells. What happens if it is dissolved by pectinase enzymes?
19. Reasoning: Why are human windpipes lined with Cilia?
20. Final Challenge: In the "9 + 2" arrangement of a flagellum, the "2" refers to:
