Cell Reproduction Flashcards
Epidermal Cells
Skin Cells
Cell Division
The process of creating new cells from an existing one
Cell Cycle
The life cycle of a cell (“birth” to death)
Periods of the Cell Cycle
- Interphase
- Mitosis
Interphase
The time span from one cell division to another (Cell grows and functions normally)
Interphase Stages
- G1 Phase
- G2 Phase
- S Phase
S Phase
The cell replicates its genetic material in order to prepare for mitosis
Sister Chromatids
A pair of identical chromosomes
Centromere
Holds the chromatids together
G1 and G2 Phase
Enzymes and proteins are made in order to prepare for mitosis (along with organelles)
Mitosis Stages
- Prophase
- Metaphase
- Anaphase
- Telophase
Prophase
- Nucleolus disappears
- Chromosomes thicken and become visible
- Centrioles move towards opposite ends of the cell
- Spindle Fibers attach to the kinetochores
Chromatin
Invisible DNA that is scattered throughout the nucleus
Spindle Fibers
A system of microtubules made by centrioles
Kinetochore
Part of the centromere of a chromosome
Metaphase
Chromosomes line up along the metaphase plate
Metaphase Plate
The equatorial region of the cell
Anaphase
Sister chromatids are separated by the contraction of the spindle fibers and the cell is pushed in opposite directions
Telophase
A nuclear membrane forms around each set of chromosomes and the nucleoli reappear
Cytokinesis
Splitting of cytoplasm between cells
Cleavage Furrow
Forms during Cytokinesis
Cell Plate
Forms during Cytokinesis in plant Cells