2.31&2.32 Quiz: Cell division and the Cell Cycle

The process by which a cell nucleus divides is called:

• interphase

• mitosis

• cytokinesis

• cell cycle

Answer explanation

The process by which a cell nucleus divides is called mitosis. During mitosis, the chromosomes are separated into two new nuclei, which is essential for cell division.

Tags

NGSS.HS-LS1-4

The phase of mitosis when chromosomes align in the

middle is called ________

• anaphase

• prophase

• telophase

• metaphase

Answer explanation

The phase of mitosis when chromosomes align in the middle is called metaphase. During this stage, chromosomes are positioned along the metaphase plate, preparing for separation in the next phase, anaphase.

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NGSS.HS-LS1-4

The first phase of mitosis is called _______________ .

• telophase

• metaphase

• anaphase

• prophase

Answer explanation

The first phase of mitosis is called prophase. During prophase, the chromatin condenses into visible chromosomes, and the nuclear envelope begins to break down, setting the stage for the subsequent phases.

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The stage of mitosis where the sister chromatids separate:

• prophase

• anaphase

• telophase

• metaphase

Answer explanation

During anaphase, the sister chromatids are pulled apart to opposite poles of the cell, marking the separation phase of mitosis. This is distinct from prophase, metaphase, and telophase, where chromatids remain together.

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NGSS.HS-LS1-4

During mitosis chromosomes meet in the middle to get divided into two daughter cells in a phase called:

• prophase

• anaphase

• metaphase

• telophase

Answer explanation

During mitosis, chromosomes align in the middle of the cell during metaphase. This is the phase where they are positioned for separation, making metaphase the correct answer.

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NGSS.HS-LS1-4

What is the cell cycle?

• The gradual development of something, especially from a simple to a more complex form.

• The study of heredity and the variation of inherited characteristics.

• The branch of biology that deals with the relations of organisms to one another and to their physical surroundings.

• The series of events that take place in a cell leading to its division and duplication of its DNA to produce two daughter cells.

Answer explanation

The cell cycle refers to the series of events in a cell that lead to its division and the duplication of its DNA, resulting in two daughter cells. This process is essential for growth and reproduction in living organisms.

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NGSS.HS-LS1-4

Which part of the Cell Cycle takes the longest?

• Interphase

• Mitosis

• Prophase

• Cytokinesis

Answer explanation

Interphase is the longest part of the cell cycle, encompassing G1, S, and G2 phases, where the cell grows, duplicates its DNA, and prepares for mitosis. In contrast, mitosis and cytokinesis are much shorter processes.

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What happens in the first part of Interphase?

• Mitosis

• Cell Growth

• DNA Replication

• Anaphase

Answer explanation

In the first part of Interphase, known as G1 phase, the cell undergoes growth and prepares for DNA replication. This is crucial for ensuring the cell has the necessary resources and size before dividing.

What phase is this cell in?

• Cytokinesis

• Mitosis

• Prophase

• Metaphase

Answer explanation

The cell is in Metaphase, where chromosomes align at the cell's equatorial plane. This phase is crucial for ensuring proper separation during the next stage of cell division.

Tags

NGSS.HS-LS1-4

What does DNA Replication mean?

• DNA is made.

• DNA makes new cells. 

• DNA copies itself.

• DNA starts the cell cycle.

Answer explanation

DNA replication is the process by which DNA copies itself, ensuring that each new cell receives an identical set of genetic information. This is crucial for cell division and the continuation of life.