Unit 5 - Mitosis Vocab Flashcards
(32 cards)
Evolution
(As it pertains to cells)
Cells have changed over time from the original prokaryote to the size they are today.
Cell Theory
All cells come from preexisting cells, cells are the basic unit of life, all living things are made up of cells.
G1
Step 1 of interphase: growth
G2
Step 3 of interphase: growth
Stem Cell
Undifferentiated cell capable of producing cells of the same type and differentiating into other cell types.
Cell Cycle
Sequence of growth and division of a cell.
Interphase
Largest phase of the cell cycle where cells grow and DNA is replicated
S phase
Step 2 of interphase: DNA is replicated
Chromosome
Condensed DNA found in nucleus
Diploid
Containing two complete sets of chromosomes
Haploid
Having a single set of unpaired chromosomes
Somatic cell
A body cell; has a diploid number of chromosomes
Gamete
A sex cell (sperm/egg); has a haploid number of chromosomes
Chromatin
Composes eukaryotic chromosomes; consists of DNA, RNA, and protein
Nucleus
Helps control cell activities; contains DNA and is divided in mitosis
Prophase
1st step of mitosis: Chromosomes condense, nucleus breaks down
Metaphase
2nd step of mitosis: chromosomes line up in the middle of the cell
Anaphase
3rd step in mitosis: chromosomes are pulled apart
Telophase
4th step of mitosis: 2 new cells begin to form, nuclei reform
Spindle fibers
Microtubules that form from centrioles
Centriole
Form spindle fibers
Sister chromatids
Two chromosomes attached at the centromere
Centromere
Center of chromosome
Cell plate
Rigid structure formed during cell division; precursor to new cell wall
Only in plant cells