cell cycle

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cycle

 [si´k'l]
a succession or recurring series of events.
cardiac cycle a complete cardiac movement, or heart beat, including systole, diastole, and the intervening pause.
Cardiac cycle. From Applegate, 2000.
cell cycle the cycle of biochemical and morphological events occurring in a reproducing cell population; it consists of the S phase, occurring toward the end of interphase, in which DNA is synthesized; the G2 phase, a relatively quiescent period; the M phase, consisting of the four phases of mitosis; and the G1 phase of interphase, which lasts until the S phase of the next cycle.
citric acid cycle tricarboxylic acid cycle.
estrous cycle the recurring periods of estrus in adult females of most mammalian species and the correlated changes in the reproductive tract from one period to another.
hair cycle the successive phases of the production and then loss of hair, consisting of anagen, catagen, and telogen.
menstrual cycle see menstrual cycle.
ovarian cycle the sequence of physiologic changes in the ovary involved in ovulation; see also ovulation and reproduction.
reproductive cycle the cycle of physiologic changes in the reproductive organs, from the time of fertilization of the ovum through gestation and childbirth; see also reproduction.
sex cycle (sexual cycle)
1. the physiologic changes that recur regularly in the reproductive organs of nonpregnant female mammals.
2. the period of sexual reproduction in an organism that also reproduces asexually.
tricarboxylic acid cycle the cyclic metabolic mechanism by which the complete oxidation of the acetyl portion of acetyl-coenzyme A is effected; the process is the chief source of mammalian energy, during which carbon chains of sugars, fatty acids, and amino acids are metabolized to yield carbon dioxide, water, and high-energy phosphate bonds. Called also citric acid cycle, Krebs cycle, and TCA cycle.
 Central pathways of metabolism: How the body produces energy from the energy-containing nutrients using the tricarboxylic acid cycle. From Davis and Sherer, 1994.
urea cycle a cyclic series of reactions that produce urea; it is a major route for removal of the ammonia produced in the metabolism of amino acids in the liver and kidney.

cell cy·cle

the periodic biochemical and structural events occurring during proliferation of cells such as in tissue culture; the cycle is divided into phases called G0, Gap1 (G1), synthesis (S1), Gap2 (G2), and mitosis (M). The period runs from one division to the next.
Synonym(s): mitotic cycle

cell cycle

n.
The series of events involving the growth, replication, and division of a eukaryotic cell.

cell cy·cle

(sel sī'kĕl)
The periodic biochemical and structural events occurring during proliferation of cells, such as in tissue culture.
Cell cycleclick for a larger image
Fig. 96 Cell cycle . The interphase stages.

cell cycle

the series of stages through which a cell progresses when it is actively dividing. In EUKARYOTES, the cycle consists of three subdivisions of INTERPHASE (G1, S and G2) plus MITOSIS.

cell cy·cle

(sel sī'kĕl)
The periodic biochemical and structural events occurring during proliferation of cells, such as in tissue culture.
References in periodicals archive ?
But when the cyclin reaches a certain concentration the cells will continue to divide and the cell division cycle grows.
Progression through the cell division cycle is regulated by coordinated activities of cyclin/cyclin dependent kinases (CDK) complexes.
The human papillomavirus type 16 E6 and E7 oncoproteins cooperate to induce mitotic defects and genomic instability by uncoupling centrosome duplication from the cell division cycle. Proceedings of the National Academy of Sciences of the United States of America.
In initial acute lymphoblastic leukemia (ALL), a higher fraction of proliferating cells seems to result in a higher efficacy of the chemotherapeutic drug targeting the cell division cycle. Interestingly, at first presentation of childhood ALL, the prognostic value of the proliferative capability of lymphoblasts remains controversial, and there is no clear evidence of an association with prognosis (13-15).
To find how the cell division cycle is coupled to the circadian clock, the researchers sped up the cell cycle by boosting the intensity of light, enabling the cells to photosynthesize more, which increases the amount of energy available to them.

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