The Chromosomes
SnapShot into the Cell
Prep For Mitosis
The Stages
Overall
100
Where do the chromosomes line up in the cell before splitting
The chromosomes line up in the center of the cell
100
what is the process above?
Mitosis
100
What is the part of the cell cycle that is preparing for mitosis
Interphase
100
What are the names of the 4 stages?
Prophase, Metaphase, Anaphase, and Telophase
100
What is mitosis?
When a cell divides
200
What are chromosomes in a Eukaryotic cell, and how many do humans have?
Chromosomes are curled strands of DNA. Humans have 46 chromosomes
200
which Phase is shown above?
Metaphase
200
What happens to the DNA before mitosis occurs
The DNA is replicated
200
What is the "5th" step where the cytoplasm is actually split?
Cytokinesis
200
What are the reasons for cell division?
To grow and repair
300
What bonds the chromosome together when the DNA is copied
The Centromere
300
A:
C:
Which picture above represents Telophase?
Picture A
300
In what phase and part of the cell cycle is the DNA replicated?
The S phase of Interphase
300
In which stage do the spindle begin to form and the chromosomes condense, becoming visible?
Prophase
300
What is the "extra phase" of interphase where a cell can "exit" the cell cycle?
The phases where a cell can "exit" the cell cycle is called the G0 phase.
400
What forms during prophase that later during anaphase pulls the chromosomes to the opposite sides of the cell?
Spindle Fibers
400
Lable all the parts of the item shown above including its overall name:
The center dots: Centromere
Each side: Chromatid
In total: Chromosome
400
How many phases are in Interphase, and what are all of the phases called?
there are 3 phases, G1, S, and G2
400
In which phases of mitosis do the chromosomes condense and become visible?
Prophase
400
Once the cell goes through the G0 phase, can it ever re-enter the cell cycle? When would this phase occur?
No once a cell enters the G0 phase it can never leave. If this phase occurs it would be directly after the G1 phase.
500
What surrounds chromosomes and is a part of 2 of the phases in mitosis?
The nuclear envelope
500
What are the yellow lines and yellow dots representing in the diagram above?
The yellow lines are the spindle fibers, and the yellow dots are the centrioles
500
What occurs during each phase of interphase?
In the G1 phase, the cell increases in size and prepares to replicate its DNA. In the S phase, the cell replicates its DNA, now the cell has 2 complete sets of chromosomes. And last, in the G2 phase, the cell increases in size for the 2nd time.
500
What is the main part of each phase in mitosis?
Prophase: spindle fibers form and chromosomes condense becoming visible
Metaphase: the chromosomes line up in the center of the cell
Anaphase: the chromosomes are pulled to opposite sides
Telophase: the nuclear envelopes reform and the cell begins to divide
500
How does Cytokinesis occur in both plant and animal cells?
In animal cells, the cell membrane pinches in the center. Though, since plant cells have the cell wall in addition to the cell membrane, instead of the cell membrane just pinching, a cell plate is formed in the center of the cell, splitting the 2.