Question 1 What is a cell? Question 2 What are unicellular organism.Give example? Question 3 What are multi cellular organism.Give example? Question 4 Who discovered cell? Fundamental Units Of life Robert Hooke in 1665 discovered cell.He examined a thin slice of cork(substance which comes from bark of a tree)and found that cork resembled structure of honeycomb … [Read more...] about Fundamental units of life
The fundamental unit of life:cell
Plastids
Question 1 What are the main functions of plastids? Question 2 What are the major categories of plastids? Question 3 Name the plastic which is green in colour and involved in photosynthesis? Question 4 Why plastids are called as kitchen of cell? Question 5 Describe the two membranes of plastids? Plastids They are present in plant cell but absent in animal … [Read more...] about Plastids
Mitochondria
Question 1 What are the function of Mitochondria? Question 2 Explain the structure of Mitochondria? Question 3 Why Mitochondria is called as power house of cell? Mitochondria(Power house of cell) They are tiny bodies of varying shape(cylindrical,rod-like,spherical)distributed in cytoplasm. Each mitochondria is surrounded by double membrane.Outer membrane is … [Read more...] about Mitochondria
Lysosomes
Question 1 Explain the structure of lysosomes? Question 2 What are the functions of lysosomes? Question 3 Why lysosomes are called digestive bags? Lysosomes They are simple tiny spherical sac like structures evenly distributed in the cytoplasm. Each lysosome is a small vesicle surrounded by a single membrane and contains enzymes.These enzymes are capable of … [Read more...] about Lysosomes
Golgi apparatus
Question 1 What are the main functions of Golgi apparatus? Question 2 Explain the structure of Golgi apparatus? Golgi Apparatus 1)It consist of set of membrane bounded,fluid-filled vesicles,vacuoles and flattened cisternae. 2)Cisternae are usually packed together in parallel rows. 3)They arises from membrane of smooth ER,Which in turn originates from rough … [Read more...] about Golgi apparatus