Question

2. In wh o were most of the onion roat tp 7 Based on what you know about all oyole division, what does this imply about the life span of noel? 3. Were there any stages of the cell cycle that you did not observe? How can you explain this using evidence from the cell oyale? 4. As a cell grows, what happens to its surface area to volume ratio? (Hint Think of a balloon being blown up). How does this ratio change with respect to cell division? 5. What is the function of mitosis in a cell that is about to divide? 8. What would happen if mitosis were uncontrolled? 7. How accurate were your time prediction for each stage of the cell cycle? 8. Discuss one observation that you found interesting while looking at the onion root tip ce s.

Answer 1

Answer (2) :

The image of cells under microscope is given as :

We can observe that most cells have a small nucleolus and loose chromatin material. Also, nuclear envelope is present in such cells. These cells are in the interphase stage of cell cycle.

Cell cycle consists of interphase and division. Since most cells belong to interphase stage, this implies that cells spend most of their time in interphase. During this phase, cell prepares itself for division stage.

Note:

Interphase itself consists of three stages : G1, S and G2. Cell grows in size and prepares essential material during G1 and G2 , whereas cell replicates it's DNA during S phase.