Karteikarten
Cell Division and Stem Cells
Karten in diesem Stapel (19)
- 1Where can chromosomes be found?Chromosomes are found in the nucleus of a cell
- 2What are chromosomes made of?Chromosomes are made up of DNA
- 3How many pairs of Chromosomes do humans have?Human have 23 pairs of chromosomes
- 4What happens with differnent genes?Different genes contain the code to make different proteins and so control the development of different characteristics
- 5What is DNA?DNA are large and complex molecules. They carry out the genetic code that determines the characteristics of a living thing
- 6What is the cell cycle?The cell cycle is the series of changes in which cells go through involving growth and division
- 7What is Mitosis?Mitosis is a type of cell division when the cell divides into two identical cells
- 8What need to happen before the cell can divide?Before the cell can divide, it needs to grow and increase the number of sub-cellular features e.g. ribosomes and mitochondria
The DNA also needs to replicate to form two copies of each chromosome and in this way genetic material is doubled - 9What happens during Mitosis?1. One set of chromosome is pulled to each end of cell
2. The nucleus divides
3. The cytoplasm and cell membrane divide to form two identical cells - 10Why is cell division by mitosis important?It is important because it makes new cells for:
1. Growth and development of multi-cellular organisms
2. Repairing damaged tissues
3. Asexual reproduction - 11What are stem cells?Stem cells are undifferentiated cells (they have not become specialised) that can divide to make different types of cells
- 12What are the two types of stem cells?Embryonic and Adult Stem Cells
- 13Where are stem cells found in human embryos?They are found in the umbilical cord of a newborn baby and in some organs and tissues
- 14What is special about embryonic stem cells?They can make all types of cells
- 15Where are Adult stem cells found?Adult stem cells are found in some organs and tissues e.g. bone marrow , neurones, blood etc
- 16What is the difference between embryonic cells and adult stem cells?Adult stem cells can only make certain types of cells and their capacity to divide is limited
- 17What are Gametes?Cells in the reproductive organs divide to form gamete e.g sperm and eggs
- 18What is the difference between Gametes and Body Cells?Gametes contain one set of genetic information while body cells contain two sets of genetic information
- 19What is the type if cell division that produces Gametes called?Meiosis
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- Karteikarten am Cell Division and Stem Cells, erstellt von Britney Bullen am 07/06/2017.
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- Britney Bullen
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