Flashcards

Topic 3.2 Biology

Hannah Smith Biology AS level Inglês 11 flashcards

Flashcards do conjunto (11)

1Cell Cycle NamesInterphase
Prophase
Metaphase
Anaphase
Telophase
2InterphaseG1 (S and G2) - brackets are division
in G1 protein synthesis starts, cytoplasm volume increases and new organelles produced.
- S is DNA synthesis. Chromosomes copied.
- G2 proteins needed for cell division are replicated.
3Prophase (6)- Normal cell activity stops
- Chromosomes condense
- nucleolus breaks down
- Nuclear membrane starts to break down
- Centrioles move to opposite sides of nucleus and spindle starts to form.
- crossing over
4Metaphase 3)- Chromatids arrange themselves along middle of the cell
- Spindle fibres attach themselves to the centromere.
- Independent assortment
5Anaphase (2)- Sister chromatids pulled apart at centromere
- Chromatids move to opposite poles of the cell.
6Telophase- Chromosomes reach poles of cell
- Nuclear membrane reforms
- Chromosomes become less visible
- Cytokinesis begins
7Cytokenesis- Cell organelles become evenly distributed around nuclei.
- Microtubules form a ring around cell
- Constrict until cells separate.
8somatic cellbody cell
9Totipotent- first few divisions of zygote
- convert to any cell inc. placenta, adult & foetus
10Pluripotent- Inner mass of the blastocyst
- to all types of cell in adult body nut not into placenta and membranes
11Multipotent- Bone marrow, in some organs and umbilical cord blood cells
- Only convert to several types of cell limited to a specific tissue or organ.

Descrição: AS level Biology FlashCards sobre Topic 3.2 Biology , criado por Hannah Smith em 09-04-2017.
Criado por: Hannah Smith
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