What is a domain? Name the three domains of life.

A domain is the highest taxonomic rank, classifying life into three groups based on genetic differences:

1. Bacteria – Prokaryotic, single-celled organisms with peptidoglycan in their cell walls.

2. Archaea – Prokaryotic, single-celled organisms that live in extreme environments.

3. Eukarya – Includes all eukaryotic organisms (plants, animals, fungi, protists).

 

Related Questions:

  1. Why are the following scientists famous for?
  2. Define:
  3. Give the modifications of epidermal cells for:
  4. Keeping in view the parts labeled 1 to 4 in the plant cell diagram, answer:
  5. The nucleus diagram questions:
  6. Cell shape is related to function. Give three examples:
  7. plasma membrane has two main components according to fluid mosaic model. which components represent fluid and which represents mosaic?
  8. Select the structures which are present in all cells of all kingdoms. write one function of each selected structure.
  9. Which animal and plant cells lack a nucleus, and how do they function without nucleus?
  10. Why do unripe oranges turn from green to orange upon ripening?
  11. Which organelles are abundant in salivary gland cells?
  12. Explain the structural model of the cell membrane and give the roles of the cell membrane.
  13. How is the cell wall important in the lifestyle of plants?
  14. If a cell is rich in SER, list the roles in which this cell will be more efficient.
  15. Give the Significance of Muscles in the Life of Animals.
  16. Give the Types of Plastids and Their Roles.
  17. Describe the Structure and Functions of an Animal Cell. How Is It Different from a Plant Cell?
  18. Justify how cells of leaf have a variety of specialized structure and functions.
  19. State the relationship between structure and functions of mesophyll cells, epidermal cells, neurons, muscles, RBCs and liver cells?
  20. Describe the role of cell membrane in maintaining equilibrium while exchange in matter?