Ch.10 Flashcards
Cell surface area-to-volume-ratio
at the beginning of cell division a chromosome consists of two:
chromatids
What regulates the timing of the cell cycle in eukaryotes?
Cyclins
The period between cell division
Interphase
The area of which materials enter and leave the cell depends on the cells:
surface area
In order for a cell to divide successfully, the cell must first:
duplicate its genetic information (DNA)
Sister chromatids are attached to each other at an area called the :
the centromere
If a cell has 12 chromosomes then how many chromosomes will each of its daughter cells have after mitosis and cytokinesis
12 chromosomes
How does a eukaryotic cell’s chromosomes change as a cell prepares to divide
replication, condensation, and organization
What is the relationship between interphase and cell division?
A cell spends most of its time in interphase, and during this time it grows, replicates its chromosomes, and prepares for cell division
Order of Mitosis
prophase
Metaphase
anaphase
telophase
Prophase
Chromatin condenses into visible chromosomes, each consisting of two sister chromatids
Metaphase
spindle fibers attach to the centromeres of each chromosome
anaphase
Sister chromatids separate and are pulled to opposite poles of the cell by the spindle fibers.
Each separated chromatid is now considered a chromosome.
Telophase
Chromosomes arrive at opposite poles and begin to decondense.
and the spindle disassembles.
Cytokinesis
Completes the process of cell division-splits one cell into two
What are the two phases of the cell cycle?
Interphase and M phase
cell divison
The cell divides to form 2 daughter cells
Mitosis
Nucleus division
Phase of cell division
M phase
What makes up Interphase?
G1:Cell growth
S Phase: DNA Replication
G2: Prep for mitosis
