Question
Download Solution PDFMatch Column - A with Column - B
Column – A |
Column – B |
||
i. |
G1 |
a. |
Cell synthesizes a complete copy of the DNA |
ii. |
S |
b. |
First gap phase, the cell grows physically larger. |
iii. |
G2 |
c. |
Cell begins to reorganize its contents in preparation for mitosis |
iv. |
M |
d. |
Cell divides its copied DNA and cytoplasm to make two new cells |
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is i - b, ii - a, iii - c, iv - d
Key Points
- The cell physically expands, duplicates organelles, and creates the molecular building blocks it will require in subsequent stages during G1phase, also known as the first gap phase.
- The cell creates a full copy of the DNA in its nucleus during the S phase. Moreover, it makes duplicates of the centrosome, a structure that organises microtubules. During M phase, the centrosomes aid in the separation of DNA.
- The second gap phase, also known as the G2 phase, is a time of increased cell growth, protein and organelle production, and content reorganisation in preparation for mitosis.
- The cell's nuclear DNA condenses into its visible chromosomes during mitosis and is separated by the mitotic spindle, a specialised microtubule-based structure.
Additional Information
- Stages of the cell cycle
- A cell must grow, replicate its genetic material (DNA), and physically split into two daughter cells before it may divide.
- The cell cycle is a structured, predictable series of actions that cells take to complete these goals.
- Because the two daughter cells can restart the entire process from the beginning after each cycle, the cell cycle is a cycle rather than a linear pathway.
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