click below
click below
Normal Size Small Size show me how
Cell Division - MCAS
MCAS Vocabulary Cell Division
Question | Answer |
---|---|
cell division | division of a parent cell into daughter cells |
centriole | structure that helps to form the spindle |
spindle | microtubule structure that separates chromosomes during mitosis |
cell cycle | cell grows, prepares to divide, then divides to start growth process again; interphase + M phase |
telophase | last phase of mitosis, chromosome are in two new cells and nuclear membranes start to reform |
interphase | cell grows, performs its normal functions, and prepares for division; consists of G1, S, and G2 phases |
mitosis | division of the nucleus or chromosomes |
metaphase | phase of mitosis in which chromosomes line up in the center of the cell |
prophase | first phase of mitosis in which chromosomes become visible and nuclear membrane disappears |
cytokinesis | division of the cytoplasm (cytosol and organelles) |
anaphase | phase of mitosis in which sister chromatids are pulled to opposite sides of the cell |
cancer | uncontrolled cell division |
G1 phase | stage of interphase in which cell grows and performs its normal functions |
S phase | stage of interphase in which DNA is replicated |
G2 phase | stage of interphase in which cell duplicates its cytosol and organelles |
gamete | sex cell, sperm or egg |
meiosis | type of cell division that creates gametes; cell divides twice to create four cells that are genetically unique |
crossing-over | process by which homologous chromosomes exchange pieces, resulting in greater genetic variety |
transcription | copying the code from DNA onto mRNA |
codon | three mRNA nucleotides that code for a specific amino acid |
translation | process by which a ribosome uses the code on mRNA to make proteins |
nucleotide | building block of a nucleic acid (DNA and RNA) |
chromatin | DNA that is coiled around proteins |
amino acid | building block of a protein |
mRNA | messenger RNA; type of RNA that carries instructions from DNA in the nucleus to the ribosome |
polypeptide | synonym for protein; chain of amino acids |
replication | process in which DNA is copied |
rRNA | ribosomal RNA; type of RNA that makes up part of the ribosome |
mutation | a change or error in the DNA sequence |
tRNA | transfer RNA; type of RNA that carries amino acids to the ribosome |