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Mitosis: Prophase and Metaphase

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Questions and Answers

What is the result of DNA replication in each chromosome?

A single, longer chromosome
Four identical chromosomes
Two identical sister chromatids (correct)
A single, thicker chromosome

What is the role of the centrosome in cell division?

To organize the cytoskeleton (correct)
To separate sister chromatids
To duplicate chromosomes
To proofread and repair DNA

What occurs when copying errors happen during DNA replication?

The DNA is discarded and the process starts again
The errors are ignored and the cell divides
The errors are detected and fixed by special proteins (correct)
The centrosome is activated to correct the errors

What is the appearance of chromosomes just before cell division?

Thick, bulging structures (A) Signup and view all the answers

What is the structure of a chromatid?

A group of tightly bunched, threadlike material (B) Signup and view all the answers

What happens to the centrosome during DNA replication?

It doubles (C) Signup and view all the answers

What is the main function of the centromere during metaphase?

To attach the spindle fibers to the chromosomes (D) Signup and view all the answers

What happens to the chromatids during anaphase?

They separate and move towards the opposite ends of the cell (A) Signup and view all the answers

What is the significance of the centrosomes during metaphase?

They reach the opposite ends of the cell and help in the alignment of chromosomes (A) Signup and view all the answers

What occurs during the longest phase of mitosis?

The chromosomes align at the centre of the cell (A) Signup and view all the answers

What is the result of the spindle fibers retracting during anaphase?

Each chromatid is pulled towards one end of the cell (A) Signup and view all the answers

What is the consequence of the chromatids separating during anaphase?

The cell has twice as many chromosomes as usual (D) Signup and view all the answers

What is the primary function of the spindle fibres during anaphase?

To pull the chromatids to opposite sides of the cell (A) Signup and view all the answers

What is formed around the new daughter nuclei during telophase?

Nuclear membrane (C) Signup and view all the answers

What is the result of the completion of mitosis?

Two identical nuclei with uncoiled chromosomes (D) Signup and view all the answers

What is the primary function of the centromere during anaphase?

To split apart and separate the chromatids (A) Signup and view all the answers

What is a characteristic of the chromosomes during telophase?

They are less coiled and harder to see (C) Signup and view all the answers

What is the nature of the process of mitosis?

A continuous process with distinct phases (B) Signup and view all the answers

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