Select the structures which are present in all cells of all kingdoms. write one function of each selected structure.

Structures present in all cells and their functions:

  • Cell membrane – Controls movement of substances in and out.
  • Nucleus – Stores genetic material (except prokaryotes).
  • Chromosomes – Carry genetic information.
  • Cytoplasm – Site for biochemical reactions.
  • Ribosomes – Protein synthesis.
  • RER & SER – Protein and lipid synthesis.
  • Golgi apparatus – Modifies and packages proteins.
  • Lysosome – Breaks down waste materials.
  • Mitochondria – Energy production.
  • Cytoskeleton – Provides structural support.

Related Questions:

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  2. What makes red blood cells more suitable for the transport of oxygen?
  3. Keeping in view the parts labeled 1 to 4 in the plant cell diagram, answer:
  4. The nucleus diagram questions:
  5. Cell shape is related to function. Give three examples:
  6. plasma membrane has two main components according to fluid mosaic model. which components represent fluid and which represents mosaic?
  7. The science of Biology
  8. The diagram shows one insect. Answer the following questions related to it.
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  10. Hepatitis B virus was found in the blood of 10 persons, but only 6 of them were suffering from the disease. Why?
  11. How is biology related to other sciences? Show and explain the link.
  12. How can biology lead to careers in various fields?
  13. Explain that science is a collaborative field.
  14. Why is biology important for human welfare?
  15. Discuss the biological method of study and its applications.
  16. How is the biological method applied to find the cause of malaria?
  17. Explain the use of the biological method to understand the spread of malaria.
  18. Explain the three-domain system of classification.
  19. Write down the major characteristics of kingdom Plantae and kingdom Animalia?
  20. Give the modifications of epidermal cells for: