Question

mitosis coloring

mitosis coloring
cell division includes a very important process called mitosis where the nucleus creates a copy of all of its dna so that each new cell is an exact copy of the parent cell and contains the exact same number of chromosomes. the cell cycle has five phases, but mitosis nuclear division occurs in four steps: prophase, metaphase, anaphase, and telophase. a phase called interphase is not actually part of mitosis, but is the resting phase that the cell is in when it is not dividing.

1. interphase. a cell spends most of its time in this \in between\ phase performing cell activities like cellular respiration, osmosis, and for plant cells, photosynthesis. during this phase, the dna is uncoiled and is called chromatin. a pair of centrioles are present but inactive in the cytoplasm and the nucleolus is visible. at this time the cell grows, the dna replicates, and organelles grow in preparation for cell division. color the centrioles red □ and the nuclear membrane yellow. □ shade the chromatin blue. □
2. prophase. this is the first step of mitosis. the nuclear membrane breaks apart and the chromatin condenses into chromosomes. the centrioles form a star shaped structure called the aster and a spindle forms between them. color the aster pink □ and the spindle green □. in all of the rest of the cell phases, these will be the same color.

chromosomes are in the shape of an x where one half is the original chromosome and the other half is the copy. these two copies are called chromatids. color all of the chromatids and chromosomes blue. □

1. metaphase. during this stage of mitosis, the chromosomes line up in the middle of the cell along the equator. each chromosome attaches itself to a spindle fiber.
2. anaphase. during anaphase the chromatids are pulled apart by the spindle and move to opposite sides of the cell.
3. telophase. now that the chromosomes are separated, two new cells are formed. the spindle fibers disappear; the chromosomes uncoil and become spaghetti-like chromatin again, and the nuclear membrane reappears. cytokinesis is where the cytoplasm splits into two daughter cells and usually occurs simultaneously with telophase.

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Explanation:

The task is to identify each stage of the cell cycle/mitosis shown and match it to the descriptions, then apply the coloring instructions:

1. Stage 1: Shows uncoiled chromatin, intact nuclear membrane, inactive centrioles - this is Interphase. Color centrioles red, nuclear membrane yellow, chromatin blue.
2. Stage 2: Shows condensed chromosomes, breaking nuclear membrane, forming aster/spindle - this is Prophase. Color aster pink, spindle green, chromosomes blue.
3. Stage 3: Shows chromosomes lined up at the cell equator - this is Metaphase. Color chromosomes blue, spindle green, aster pink.
4. Stage 4: Shows chromatids pulled apart to opposite cell poles - this is Anaphase. Color separated chromatids blue, spindle green, aster pink.
5. Stage 5: Shows two new cells with uncoiling chromatin, reformed nuclear membranes - this is Telophase (with cytokinesis). Color centrioles red, nuclear membrane yellow, chromatin blue.

Answer:

1. Stage 1: Interphase

• Color centrioles red, nuclear membrane yellow, chromatin blue

1. Stage 2: Prophase

• Color aster pink, spindle green, chromosomes blue

1. Stage 3: Metaphase

• Color chromosomes blue, spindle green, aster pink

1. Stage 4: Anaphase

• Color separated chromatids blue, spindle green, aster pink

1. Stage 5: Telophase (Cytokinesis)

• Color centrioles red, nuclear membrane yellow, chromatin blue