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Cell Cycle A&P1 lab

QuestionAnswer
very early embryonic cells stem cells
normal body (somatic) cell & number of chromosomes diploid, 46
egg & sperm cells haploid, have only half the nomral chromosomes (23)
sequence of events that occurs during life of a cell cell cycle
metabolically active, duplicates organelles & cystolic components,replicates centrosomes G1 Phase
what happens during G1 phase? Time length? grows, longest phase, days to years depending on cell type. metabolically active, duplicates organelles & cystolic components,replicates centrosomes
programmed cellular death apoptosis
dormant state in which cells only perform necessary functions to stay alive G0 phase. time varies
commitment to undergo cellular division. DNA replicated **S Phase
**S Phase DNA replicated during
organelles duplicated, final opportunity to create proteins G2 Phase
Interphase schedule G1, G0, S, G2 (M)
exit from cell cycle-nondividing cell G0
g2 phase cell growth continues, enzymes & other proteins synthesized, replication of centrosome completed.
Mitotic(M) Phase cycle Prophase, Metaphase, Anaphase, Telophase
cellular division produces 2 identical daughter cells during Mitosis
rate at which cell undergoes Mitosis Mitotic rate
Interphase activities (3) DNA replication, duplicated organelles, cell growth
What happens during prophase nuclear membrane disappears, distinct chromosomes
copies of chromosome DNA chromatid
chromatids held together by a centromere
astral ray of spindle fibers microtubules extend between pairs of centrioles
metaphase equator, chromosomes line up *countable
anaphase centromere divides & chromatids seperate moving towards centrioles at opposite poles- pulled apart by spindle fibers
Mitotic(M) Phase cycle Prophase, Metaphase, Anaphase, Telophase
cellular division produces 2 identical daughter cells during Mitosis
rate at which cell undergoes Mitosis Mitotic rate
Interphase activities (3) DNA replication, duplicated organelles, cell growth
prophase active cell division
What happens during prophase nuclear membrane disappears, distinct chromosomes
copies of chromosome DNA chromatid
chromatids held together by a centromere
astral ray of spindle fibers microtubules extend between pairs of centrioles
metaphase equator, chromosomes line up *countable
anaphase centromere divides & chromatids seperate moving towards centrioles at opposite poles- pulled apart by spindle fibers
cellulr components physically seperated (hour-glass) cytokinesis
telophase chromosomes finish moving to daughter cells, DNA uncoils, nuclear envelope reforms,
what follows telophase interphase and G0
prophase active cell division, chromosomes become visible
Created by: la66