Stem Cells 0.0 / 5 ? BiologyCells, tissues and organsIGCSEAQA Created by: Lotto65Created on: 23-12-15 16:17 What are stem cells? Unspecialised cells 1 of 15 Where are stem cells found? Adult bone marrow; human embryo 2 of 15 What is the cell called when an egg and sperm cell initially fuse? Zygote 3 of 15 Is a zygote a cell or group of cells? Cell 4 of 15 Where are stem cells found in an embryo? When a zygote divides many times by mitosis to form a ball of cells, the inner layers of the ball are embryonic stem cells 5 of 15 What is differentiation? When stem cells specialise into all types of body cell for different functions 6 of 15 Give some examples of differentiated cells? Nerve cells, bone cells, muscle cells etc. 7 of 15 Can adult stem cells differentiate? Yes 8 of 15 What is the hope for the future with stem cells? Make them differentiate into specific cells to cure diseases like paralysis by producing nerve cells 9 of 15 What is therapeutic cloning? The area of research into taking an adult nucleus and putting it into an egg to produce tissues and organs for medecine 10 of 15 What has therapeutic cloning been successful in producing so far? Trachea 11 of 15 When do animal cells differentiate? Early development 12 of 15 What replaces cells that cannot differentiate? Adult stem cells 13 of 15 When do plant cells differentiate? Throughout their whole life as they continue to grow 14 of 15 What are meristems? Actively dividing plant tissues 15 of 15
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