Shoaib Q- Who proposed the cell theory? Enlist its postulates. Answer- Cell theory was firstly proposed by Schleidin and Schwann in 1839. The postulates of Cell theory are as follows: 1. Each cell is a mass of protoplasm and is bounded by plasma membrane. 2. New cells are formed De Novv. 3. Cells are structural and … Read more
Q- Differentiate between Unicellular and multicellular organisms. Answer- Unicellular organism: 1. Unicellular organism are very tiny organism which are formed or consisted of only one single cell. 2. In unicellular organism the division of labour is between the cell organelles. 3. Unicellular organisms are composed on single cell that is why they have a very … Read more
Q- How do prokaryotes differ from eukaryotes? Answer- The four main differences between prokaryotic and eukaryotic cell are as follows: 1. Prokaryotic cells have a false or diffused nucleus whereas Eukaryotic cells have a true nucleus. 2. Prokaryotic cells have less cell organelles than a eukaryotic cell. 3. Prokaryotic cells have flagella to move whereas … Read more
Q- What will be the effects of hypotonic and hypertonic salt solutions on human RBCs? Answer- Human RBCs become swollen in hypotonic solution due to endosmosis, while become crenated in hypertonic solution due to exosmosis.