Cell The Unit Of Life

The endomembrane system includes organelles involved in synthesis, transport, and packaging: Endoplasmic Reticulum, Golgi Apparatus, and Lysosomes. Mitochondria and chloroplasts have separate genomes and are not part of this system.

The basic structural elements of cells are the most abundant non-mineral elements: Carbon, Hydrogen, Oxygen, and Nitrogen. These are essential for the formation of macromolecules like proteins, nucleic acids, carbohydrates, and lipids.

In the electron transport system of mitochondria, oxygen serves as the terminal electron (hydrogen) acceptor, combining with protons and electrons to form water. This is essential for maintaining the flow of electrons.

- Option (1) is incorrect because cellular organization is essential for metabolism in living organisms.
- Option (2) is incorrect because non-living organisms do not show reproduction; only living organisms can reproduce.
- Option (3) is correct because in Amoeba, growth and reproduction are closely related, as the organism divides and grows during the process of binary fission.
- Option (4) is incorrect because irritability is the ability of an organism to respond to stimuli, not the response of the environment.
Thus, the correct answer is "Reproduction is synonymous with the growth in Amoeba."