chapter 4 Flashcards
is the life cycle of individual cells.
cell cycle
are initiated by division of mother cells.
cells
when plants cell are in their final form and they stop dividing is called
(cell
cycle arrests).
are more protective if dead.
bark cells
The cell cycle can be
divided into
growth phase and division phase
The cell cycle can be
divided into
growth phase and division phase
is the phase of the cell cycle in which a typical cell spends most of its life.
interphase
Three phases can be
detected during
interphase.
G1 Phase
S Phase
G2 phase
are
synthesized to be used
for DNA replication.
Nucleotides
During the G1 phase (gap 1)
The cell is recovering
from division.
true or false
true
is the longest
part of the cell cycle.
g1 or growth 1 phase
Thousands of genes are
attached in a linear
sequence forming a
chromosome
how many chromosomes do most plants have
5 to 30 chromosomes
has a
centromere and is
capped by a telomere on each end
chromosome
Each duplicate is a
chromatid; or a
sister chromatids
enter S phase and replicate
one or more times before
differentiating is called
endoreduplication
Cells prepare for division.
The α- and β-tubulins
necessary for spindle
microtubules are
synthesized
during g2 phase
The cell produces ______
for processing
chromosomes and
breaking down the nuclear
envelope.
proteins
Division of the
nucleus is called
karyokinesis.
Duplication
division
mitosis
Reduction
division
meiosis
Division of the
cytoplasm is
cytokinesis.
occurs as the body grows and increases
in cell number.
mitosis
two types of division phase
mitosis and meiosis
what are the stages in mitosis
Prophase
Metaphase
Anaphase
Telophase
The first phase in mitosis is
prophase.
what phase is it when Chromosomes condense, the nucleolus becomes invisible, the nuclear envelope breaks into
vesicles. Spindle fibers attach to the kinetochore—a
prophase
a protein layer on
each chromatid.
kinetochore
what phase is it when Microtubules push
and pull the chromosomes toward the cell
methaphase
what phase of mitosis if the Spindle
microtubules shorten and pull the twin
chromatids toward opposite
poles of the cell.
Anaphase
what phase of mitosis when the chromatids
reach each pole of the cell, Chromosomes
uncondensed. New nucleoli
appear.
Telophase
