U2T5 – Mitosis

The diagram shows the cell cycle. What does 'M' stand for in the diagram? ( Spell it correctly)

What happens in G1 phase?

What happens in S phase?

What happens in G2 phase?

What term is given to describe G1 phase, S phase and G2 phase combined? ( Spell it correctly)

How long is one complete cell cycle on this graph?

Between which times does synthesis take place?

At which time does mitosis take place?

Name the area where the sister chromosomes together, and attach to the spindle fibres here. (Spell it correctly)

Name the organelles which produce the spindle fibres. ( Spell it correctly)

Which phase of mitosis is when the chromosomes line up along the equator?

Which phase of mitosis is when the chromosomes condense?

Which phase is when the sister chromatids are pulled to opposite poles by the spindle fibres.

Put these letters in the correct order

At the end of telophase, the cytoplasm cleaves. What is this process called? ( spell it correctly)

If you were to investigate mitosis in plant tissue, which part of a plant would you choose to look at?

To perform a 'Root Tip Squash' , what do you have to do to your root tip cells prior to staining?

To calculate the 'Mitotic Index' you need to stain your root tip cells. Which of the following is NOT an appropriate stain to view Chromosomes with?

In a garlic root tip squash, a student observed 124 cells, of which 19 has visible chromosomes. What was the mitotic index for that tissue?

In a suspected lung cancer tissue sample, a histopathologist observed 19 cells out of a total of 320 in mitosis. The average mitotic index for healthy human lung tissue is 0.04. Is the patient likely to have cancer or not?