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Ch 12 Review
Terms in this set (37)
An ordered sequence of events in the life of a eukaryotic cell, from its origin in the division of a parent cell until its own division into two.
All the DNA in one cell of an organism
Cell structures that carry the genetic material that is copied and passed from generation to generation of cells.
Any cells in the body other than reproductive cells
Reproductive cell which undergoes meiosis
DNA and protein that makes up chromosomes
Replicated forms of a chromosome joined together by the centromere and eventually separated during mitosis or meiosis II.
Area where the chromatids of a chromosome are attached
Cell division in which the nucleus divides into nuclei containing the same number of chromosomes
Division of the cytoplasm during cell division
Cell division that produces reproductive cells in sexually reproducing organisms
Stage of the cell cycle when a cell is actively dividing
Stage in which the cell grows and duplicates its chromosomes
Stage of interphase in which cell grows and performs its normal functions
Stage of interphase in which DNA is replicated
Stage of interphase in which the cell prepares to enter mitosis
Phase of mitosis: Chromosomes become visible, nuclear envelope dissolves, spindle forms
Phase of mitosis: Spindle microtubules attach to each chromatid's kinetochore
Phase of mitosis: Chromosomes align in center of cell
Phase of mitosis: Sister chromatids are pulled apart and moved to opposite poles
Phase of mitosis: Equivalent sets of chromosomes are at opposite poles, cytokinesis begins, nuclear envelope appears and spindle disassembles
A specialized region on the centromere that links each sister chromatid to the mitotic spindle.
The process by which cancerous cells move to other parts of the body and produce new tumors
How many chromosomes do you have in your somatic cells?
How many chromosomes do you have in your gametes?
How many chromatids are in one of your body cells that has duplicated its chromosomes prior to mitosis?
How are the three subphases of interphase alike?
What key event happens during the S phase?
One of the major differences in the binary fission of prokaryotic cells compared to mitosis of eukaryotic cells is that ___________
Duplicated single chromosome does not separate along mitotic spindle in prokaryotes
A plant cell has 12 chromosomes at the end of mitosis. How many chromosomes would it have in the G2 phase of its next cell cycle?
How many chromatids would a plant cell of 12 chromosomes have in the G2 phase of its cell cycle?
The longest part of the cell cycle is __________
In animal cells, cytokinesis involves ________
Contraction of a ring of actin microfilaments
Humans have 46 chromosomes. That number of chromosomes will be found in ___________
Sister chromatids __________
each have their own kinetochore
A cell that passes the restriction point in G1 will most likely ________
undergo chromosome duplication
What initiates the separation of sister chromatids in anaphase?
Activation of a regulatory protein following the attachment of all kinetochores to microtubules
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