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bio grade 10

Mitosis

QuestionAnswer
1 growth phase? when the cell is growing and developing its organelles (G1)
what happens in synthesis phase? the chromosomes replicate in the nucleus 2x
What is prophase? the centrioles move to opposite poles, the nuclear envelope disappears and the chromosomes coil up into visible structures.
when do spindles attach to chromosomes and line up in the middle? During metaphase
what is anaphase? spindle fibres retract and pulls 1/2 of the chromosomes towards each centriole.
what is telophase? spindle fibres are back the centrioles and nuclear envelopes start to form back around both sets of chromosomes
what is cell check point 1? lack of nutrients to supports growth.
what is cell check point 2? the DNA strands have not been replicated or damaged
cell check point 3? the chromosomes have not attached themselves to spindle fibres & have not moved opposite sides
what is cytokinesis? when the cell membrane pinches off and divides into 2 daughter cells.
what is apoptosis? when the cell dies because it is too old
what organelle is responsible for apoptosis? lysosomes
what are cancer cells cell that undergo mitosis an unlimited number of times,
what is the term for cells that clump together due to uncontrollable urge to divide. a tumor
describe tumors they never die on its own and it does not function properly, the DNA becomes mutated by genetics Ex. smoking, vaping
Created by: ruth.ali26
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