Question

Key Concept What are the phases of the cell cycle

Directions: Mitosis is one stage in the mitotic phase of the cell cycle. Mitosis is divided into four parts. Work
with a partner to read each sentence and decide which part of mitosis it describes. On each line, write the term
from the word bank that correctly matches each sentence. Terms will be used more than once.
anaphase
prophase
telophase
1. Duplicated chromosomes align along the middle of the cell.
2. The cell begins to get longer.
metaphase
3. Duplicated chromatin coils together tightly..
4. Sister chromatids in each duplicated chromosome separate and are pulled in opposite
directions by the spindle fibers.
5. The nucleolus disappears, the nuclear membrane breaks down, and spindle fibers form
in the cytoplasm..
6. A nuclear membrane grows around each set of chromosomes.
7. Spindle fibers that helped divide the chromosome begin to disappear, and
chromosomes begin to uncoil.
8. Spindle fibers pull and push the duplicated mitotic chromosomes to the middle of the
cell.
9. Two new identical nuclei are formed.
10. Two identical sets of chromosomes are at opposite ends of the cell.
Directions: Answer each question on the lines provided.
cycle?

Answer 1

1. Duplicated chromosomes align along the middle of the cell. - Metaphase

2. The cell begins to get longer. - Telophase

3. Duplicated chromatin coils together tightly. - Prophase

4. Sister chromatids in each duplicated chromosome separate and are pulled in opposite directions by the spindle fibers. - Anaphase

5.The nucleolus disappears, the nuclear membrane breaks down, and spindle fibers form in the cytoplasm. - Prophase

6. A nuclear membrane grows around each set of chromosomes. - Telophase

7. Spindle fibers that helped divide the chromosome begin to disappear, and chromosomes begin to uncoil. - Telophase

8. Spindle fibers pull and push the duplicated mitotic chromosomes to the middle of the cell. - Metaphase

9. Two new identical nuclei are formed. - Telophase

10. Two identical sets of chromosomes are at opposite ends of the cell. - Anaphase .

Mitosis is a crucial process in the cell cycle, responsible for the division of a cell's nucleus into two genetically identical daughter nuclei.

It consists of four main stages: prophase, metaphase, anaphase, and telophase.

Prophase: This stage involves the condensation of chromatin into visible chromosomes, the breakdown of the nuclear membrane, and the formation of spindle fibers.

In sentence 3, it describes the coiling of duplicated chromatin tightly together, indicating the early events of prophase.

Additionally, sentence 5 mentions the disappearance of the nucleolus and the breakdown of the nuclear membrane, further characterizing prophase.

Metaphase: Sentence 1 indicates the alignment of duplicated chromosomes along the middle of the cell, which is a characteristic feature of metaphase.

Similarly, sentence 8 mentions the movement of duplicated chromosomes to the middle of the cell, confirming the occurrence of metaphase.

Anaphase: Sentence 4 describes the separation of sister chromatids in each duplicated chromosome and their movement to opposite ends of the cell.

This corresponds to the events of anaphase.

Telophase: Telophase is characterized by the elongation of the cell, the formation of new nuclear membranes around each set of chromosomes, and the uncoiling of chromosomes.

Sentences 2, 6, 7, and 9 collectively describe these events, confirming the presence of telophase in the cell cycle.