CELL CYCLE Flashcards
(32 cards)
The sequence of events from the time a cell first arises as a result of cell division
until the time when that cell itself divides.
Cell cycle
cell cycle consist of 4 periods or main stage what are those?
- Growth and Development
- DNA Replication
- Preparation For Division
- Cell Division
the cell cycle consist of two main periods or cell cycle is divided into two major phases what are those?
Interphase and mitotic phase
period of growth and DNA
replication between cell divisions
interphase
interphase has three phases:
g1 phase, s phase and g2 phase
The cell grows in size and synthesizes proteins and organelles.
It prepares for DNA replication.
G1 phase
The cell duplicates its DNA, ensuring each chromosome has two identical sister chromatids.
s phase
The cell continues to grow and produces the necessary components for mitosis.
The cell also checks for any errors in the replicated DNA.
g2 phase
is the stage when a cell divides
Mitotic phase
mitotic phase involves 2 processes
‒ Division of the nucleus
‒ Separation of the cytoplasm and the new nuclei into daughter cells
the division of a single nucleus into two genetically
identical daughter nuclei
mitosis
Mitotic phase is divided into 2 mitotic phase
mitosis and cytokinesis
what are the 4 stages of mitosis
prophase, metaphase, anaphase, telophase
- chromatids condense becoming chromosomes
early prophase
nucleolus disappears
early prophase
centrioles separate and start moving to opposite ends of the cell
early prophase
spindle begins to form
early prohase
The nuclear membrane
fragments and the
microtubules invade the
nuclear area
Late Prophase
Centrioles have moved to the
opposite poles
Late Prophase
The spindle is completely
formed
Late Prophase
The chromosomes are aligned
at the metaphase plate
metaphase
Centrioles move at polar ends
and projects spindle fibers to
connect each chromosome
metaphase
The paired chromosomes
(sister chromatids) separate
anaphase
Separated chromatids move
to opposite pole
anaphase
