Cell division and growthIB MYP Sciences: Flashcards

What these 13 flashcards ask

Give three reasons why cells divide.
What is mitosis?
What happens to the DNA before mitosis?
What are the stages of mitosis in outline?
What is a chromosome?
How many chromosomes are in a human body cell?
What does diploid mean?
How many chromosomes do daughter cells have after mitosis?
What is a stem cell?
Where are stem cells that make blood cells found?
What is cancer?
What is a tumour?
Name three risk factors for cancer.

Exam questions on Cell division and growth

A student in Lagos grazes her knee while playing football. Within a week, new skin has grown over the wound.
Explain why the new skin cells have the same DNA as the original skin cells.2 marks
A cell biology class in Chennai builds a model of a dividing animal cell. The model parent cell has 4 chromosomes, shown by lengths of coloured wool inside a paper nucleus.
Outline what happens to the nucleus and the cytoplasm after the DNA has been copied.2 marks
Researchers in Tokyo study stem cells taken from bone marrow, the soft tissue inside some bones where blood cells are made.
Outline what is meant by a stem cell.3 marks

Written by the Exaim team, led by Shaun Daswani (Head of Upper Secondary, Improve ME Institute; MSc Financial Mathematics, Imperial College London; BSc, UCL) and Jason Daswani (operational lead, Improve ME Institute; LSE).