Quiz 1

In a human diploid (2n) cell containing 46 chromosomes, mitosis results in the formation of two diploid daughter cells containing ____ chromosomes.

• 92

• 23

• 46

• 0

Answer explanation

In a human diploid cell with 46 chromosomes, mitosis duplicates the chromosomes and divides the cell, resulting in two daughter cells, each retaining the original diploid number of 46 chromosomes.

What phase of mitosis is shown in the image?

• Anaphase

• Prophase

• Metaphase

• Telophase

Answer explanation

Anaphase is characterized by the separation of sister chromatids, which move towards opposite poles of the cell. This phase follows metaphase, where chromosomes align at the cell's equator.

G1, S, G2 are all part of what stage of the cell cycle?

• Cytokinesis

• Interphase

• Mitosis

• Telophase

Answer explanation

G1, S, and G2 are phases of Interphase, which is the stage of the cell cycle where the cell prepares for division by growing and replicating its DNA. Therefore, the correct answer is Interphase.

What phase of mitosis is shown in the image?

• Anaphase

• Telophase

• Prophase

• Metaphase

Answer explanation

In metaphase, chromosomes align at the cell's equatorial plane, making them easily identifiable. This phase is characterized by the chromosomes being lined up and attached to spindle fibers, which is the key feature of metaphase.

Which of the following is not a phase in mitosis?

• S phase

• Prophase

• Metaphase

• Anaphase

Answer explanation

The S phase is not a phase of mitosis; it is part of interphase where DNA is replicated. Mitosis includes prophase, metaphase, and anaphase, which are the stages of cell division.

Through a microscope, you observe chromatids aligning in the center of the cell. What phase of mitosis is this cell in?

• Telophase

• Anaphase

• Metaphase

• Prophase

Answer explanation

The alignment of chromatids in the center of the cell indicates that the cell is in Metaphase, where chromosomes line up at the metaphase plate before being separated.

Which statement correctly describes mitotic cell division?

• Two identical daughter nuclei are formed.

• Two genetically different daughter nuclei are formed.

• Four haploid cells are formed.

• Four identical daughter nuclei are formed.

Answer explanation

Mitotic cell division results in two identical daughter nuclei, each with the same genetic material as the parent cell. This distinguishes it from meiosis, which produces genetically different and haploid cells.

Which phase of mitosis is shown in the image?

• Anaphase

• Metaphase

• Telophase

• Prophase

Answer explanation

Telophase is characterized by the reformation of the nuclear envelope around the separated sets of chromosomes, which begin to de-condense. This phase follows anaphase and is crucial for completing mitosis.

The life of a cell is called the cell cycle. Which period of the cell cycle is where cells grow and perform their normal functions?

• Interphase

• Mitosis

• Cytokinesis

• Cell Division

Answer explanation

The correct answer is Interphase, as this is the stage of the cell cycle where cells grow, perform their normal functions, and prepare for division. Mitosis and cytokinesis are stages of cell division, not growth.

What phase of mitosis is shown in the picture?

• Prophase

• Anaphase

• Telophase

• Metaphase

Answer explanation

Anaphase is characterized by the separation of sister chromatids, which move toward opposite poles of the cell. This phase follows metaphase and precedes telophase, making it the correct answer.