Shoaib Q- Name two cell-organelles which are bounded by a double-layered membrane. Give one function of each. Answer- Mitochondria and plastids are the two cell-organelles which are bounded by a double-layered membrane. Function of mitochondria: Mitochondria are the site of aerobic respiration and help in formation of ATP molecules. Function of Plastid: Plastids helps in process … Read more
Q- Define the following terms: (i) Plasmolysis (ii) Endocytosis (iii) Membrane biogenesis Answer- (i) Plasmolysis: Plasmolysis is the process of change of a fully swollen cell into a shrunken cell due to placing it in hypertonic solution. (ii) Endocytosis: Endocytosis is the process of in taking of large sized solid or liquid material inside the … Read more
Q- What is fundamental unit of life? Who discovered it? How they can be observed? Answer- Cell is the fundamental unit of cell. Cell was discovered by Robert Hooke in 1665. We can observe a cell easily under a compound microscope.
Q- (a) Draw a plant cell and label seven important organelles in it. (b) Name one organelle that can make some of its proteins in a plant cell and mention one function of it in a cell. Answer- (a) Easy way to draw labelled diagram of Plant cell: (b) Mitochondria is one of the cell … Read more