Chapter 5 Flashcards
(15 cards)
is the division of the cell nucleus and its contents.
Mitosis
is the regular pattern of growth, DNA duplication, and cell division that occurs in eukaryotic cells.
Cell cycle
is the process that divides the cell cytoplasm
Cytokinesis
is one long continuous thread of DNA that consists of numerous genes along with regulatory information.
Chromosome
Protein that organizes chromosomes and around which DNA wraps
Histone
The loose combination of DNA and proteins that are present during interphase.
Chromatin
One half of a duplicated chromosome
Chromatid
Region of the condensed chromosome that looks pinched; where spindle fibers attach during meiosis and mitosis.
Centromere
Repeating nucleotides at the ends of DNA molecules that do not form genes and help prevent the loss of genes.
Telomere
The first phase of mitosis when the chromatin condenses, the nuclear envelope breaks down, the nucleolus disappears, and the centrosomes and centrioles migrate to opposite sides of the cell.
Prophase
Second phase of mitosis when spindle fibers align the chromosomes along the cell equator.
Metaphase
The last phase of mitosis when a complete set do identical chromosomes is positioned at each pole of the cell, the nuclear membranes start to form, the chromosomes begin to uncoil, and the spider fibers disassemble.
Telophase
Third phase of mitosis during which chromatids separate and are pulled to opposite sides of the cell.
Anaphase
broad group of proteins that stimulate cell division
Growth factor
programmed cell death
Apoptosis