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the chromosomes coil around proteins
histones
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each individual Dna-histone spool
nucleosome
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where two sister chromatids are connected
centromere
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a copy of a cell; two double-stranded DNA molecules that are attached to each other
sister chromatids
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nuclear division mechanism that occurs in stomatic cells of multicelled eukaryotes
mitosis
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stomatic cells
body cells
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nuclear division mechanism that precedes the formation of gametes or spores
meisios
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What are human gametes?
sperm and egg cells
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How do prokarotes reproduce?
prokaryotic division
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What cells have to inherit parental DNA and enough cytoplasm to start living on their own?
daughter cells
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a series of events from one cell divison to the next
cell cycle
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the sum of all chromosomes in a cell of a given type
chromosome number
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how often do red blood cells divide?
every 12 hours
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In what stage of interphase are neurons arrested
G1
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stage of interphase: intervall of cell growth and activity before the onset of DNA replication
G1
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stage of interphase:
"synthesis"- DNA is replicated and sister chromatids are made
S
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Stage if interphase:
Cell prepares for division by synthesizing proteins that drive mitosis
G2
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the complete compliment of chromosomes
diploid (2n)
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What is the human diploid number?
46 (23 per parent)
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The carbon from CO2 is ultimately fixed into what stable molecule?
PGA
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Where does the dark reaction occur?
stroma
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What kind of plants fix their carbon into PGA
C3
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What kind of plants fix their carbon into oxaloacetate?
C4
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What kind of plants have their carbon fixed twice and their reactions are seperated spacially
C4
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What kind of plants have their carbon fixed twice and their reactions are seperated temporally
CAM
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What kind of plants do very well in arid environments?
CAM
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How many PGAL molecules are creates every time carbon fixation occurs?
1
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