AP Notes, Outlines, Study Guides, Vocabulary, Practice Exams and more!

AP Biology Chapter 12 Flashcards

Vocabulary words from the AP Edition of Campbell Biology, Chapter 12.

Terms : Hide Images
5091420533cell divisionreproduction of cells0
5091420534cell cyclethe life of a cell from the time it is first formed from a dividing parent cell until its own division into two cells1
5091420535genomethe genetic material of an organism, complete complement of an organism's genes along with its noncoding nucleic acid sequences2
5091420536chromosomesa cellular structure containing genetic material, consists of one very long DNA molecule and associated proteins3
5091420537somatic cellsall human cells that are not reproductive cells, each contains 46 chromosomes4
5091420538gametesreproductive cells, have half as many chromosomes as somatic cells (23)5
5091420539chromatinmake up eukaryotic chromosomes, a complex of DNA and associated protein molecules6
5091420540sister chromatideither of two copies of a duplicated chromosome attached to each other by proteins at the centromere, when joined two of these make up one chromosome, eventually separated7
5091420541centromerespecialized region where the two chromatids are most closely attached8
5091420542mitosisthe division of the nucleus9
5091420543cytokinesisthe division of the cytoplasm10
5091420544meiosisa variation of cell division which yields nonidentical daughter cells with only one set of chromosomes11
5091420545mitotic phasethe shortest part of the cell cycle, includes mitosis and cytokinesis12
5091420546interphaseaccounts for 90% of the cell cycle, includes growth of the cell and chromosome cloning13
5091420547G1 phasepart of interphase when initial growth takes place14
5091420548S phasepart of interphase when the chromosomes are duplicated15
5091420549G2 phasepart of interphase when two centrosomes have formed and a nuclear envelope bounds the nucleus16
5091420550prophasestage of mitosis when the chromatin condenses, the mitotic spindle begins to form, and the nucleolus disappears, but the nucleus remains intact17
5091420551prometaphasestage of mitosis when discrete chromosomes consisting of identical sister chromatids appear, the nuclear envelope fragments, and the spindle microtubules attach to the kinetochores of the chromosomes18
5091420552metaphasestage of mitosis when the spindle is complete and the chromosomes, attached to microtubules at their kinetochores, are all aligned at the middle19
5091420553anaphasestage of mitosis when the chromatids of each chromosome have separated and the daughter chromosomes are moving to the poles of the cell20
5091420554telophasestage of mitosis when daughter nuclei are forming and cytokinesis has typically begun21
5091420555mitotic spindlean assemblage of microtubules and associated proteins that is involved in the movements of chromosomes during mitosis22
5091420556centrosomea sub-cellular region containing material that functions throughout the cell cycle to organize the cell's microtubules23
5091420557kinetochorea structure of proteins associated with specific sections of chromosomal DNA at the centromere24
5091420558cleavageprocess by which cytokinesis occurs25
5091420559cleavage furrowa shallow groove in the cell surface near the old metaphase plate26
5091420560cell platea double membrane across the midline of a dividing plant cell, between which the new cell wall forms during cytokinesis27
5091420561binary fissiona type of cell division by which the asexual reproduction of single-celled organisms takes place28
5091420562cell cycle control systema cyclically operating set of molecules in the cell that both triggers and coordinates key events in the cell cycle29
5091420563G0 phasea cell that does not pass the G1 checkpoint goes here, a non-dividing state30
5091420564cyclina protein which occurs in a cyclically fluctuating concentration, plays an important role in regulating the cell cycle31

Need Help?

We hope your visit has been a productive one. If you're having any problems, or would like to give some feedback, we'd love to hear from you.

For general help, questions, and suggestions, try our dedicated support forums.

If you need to contact the Course-Notes.Org web experience team, please use our contact form.

Need Notes?

While we strive to provide the most comprehensive notes for as many high school textbooks as possible, there are certainly going to be some that we miss. Drop us a note and let us know which textbooks you need. Be sure to include which edition of the textbook you are using! If we see enough demand, we'll do whatever we can to get those notes up on the site for you!