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Higher Human 1.1

1.1 Division and Differentiation of Cells

QuestionAnswer
Cells within a tumour can fail to attach to each other, spreading through the body. What can then form? Secondary Tumours
What is a mass of abnormal cells known as? Tumour
What cells divide excessively because they do not respond to regular signals? Cancer Cells
The use of embryonic stem cells can offer effective treatments for disease and injury; however, it involves destruction of embryos. What is this know as? Ethical issue
What are the 2 uses of stem cells? Therapeutic and research
What use of stem cells are corneal repairs and regeneration of damaged skin an example of? Therapeutic
What type of stem cells give rise to red blood cells, platelets, phagocytes and lymphocytes? blood
Where are blood stem cells located? bone marrow
What term is being described: they can differentiate into all of the types of cell found in a particular tissue type? Multipotent
What term is being described: All the genes in embryonic stem cells can be switched on so these cells can differentiate into any type of cell? Pluripotent
What type of stem cells are multipotent? Tissue Stem cell
What type of stem cells are pluripotent? Embryonic Stem Cells
Name the process by which a cell expresses certain genes to produce proteins characteristic for that type of cell. Cellular differentiation
When germline cells undergo meiosis what is produced? haploid gametes
When germline cells undergo mitosis what is produced? germline stem cells
What type of division to germline cells undergo? mitosis + meiosis
What type of division do somatic cells undergo? mitosis
What type of cells undergo mitosis? Somatic + Germline
What term in used to describe cells of the body NOT involved in reproduction? Somatic
What term is used to describe gametes (sperm and ova) and the stem cells that divide to form gametes? Germline
Created by: mackas89
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