Mitosis Quiz
Questions: 16 · 10 minutes
1. A microscope image shows two compact chromosome groups at opposite ends of a cell, with nuclear envelopes starting to re-form. Which phase should be recorded?
Prophase
Metaphase
Telophase
S phase
2. A drug prevents spindle microtubules from attaching correctly to chromosomes. What is the most likely immediate effect?
The cell is prevented from progressing normally into anaphase
DNA replication begins again during metaphase
The cell completes anaphase without moving its chromosomes
A cell plate forms before the chromosomes align
3. What is the central result of mitosis in a typical body cell?
One nucleus divides into two nuclei with equivalent sets of chromosomes
Two haploid nuclei fuse to restore a diploid chromosome set
One diploid cell produces four genetically varied haploid nuclei
A cell copies its DNA without separating the chromosome copies
4. A diploid skin cell completes normal mitosis and cytokinesis. How does the chromosome number in each daughter cell compare with that of the original cell?
Each daughter cell has half as many chromosomes
Each daughter cell has twice as many chromosomes
One daughter cell has the full set, while the other has none
Each daughter cell has the same chromosome number
5. Which sequence lists the four main phases of mitosis in the correct order?
Prophase, metaphase, anaphase, telophase
Metaphase, prophase, telophase, anaphase
Prophase, anaphase, metaphase, telophase
Anaphase, telophase, prophase, metaphase
6. Suppose the cohesin holding sister chromatids together is not released when anaphase should begin. What is the most direct consequence?
The cytoplasm divides before spindle fibers form
The cell cannot copy its DNA during the previous S phase
Chromosomes cannot condense during early prophase
Sister chromatids cannot separate normally toward opposite poles
7. A cell has two chromosome groups at opposite poles, and new nuclear envelopes are forming. Which phase is occurring?
Interphase
Prophase
Metaphase
Telophase
8. A cell's DNA has already doubled, but its chromosomes are not yet visibly condensed. Which stage is the cell most likely in?
Prophase
Metaphase
G2 phase of interphase
Cytokinesis
9. Which statement correctly compares mitosis with meiosis?
Mitosis includes two nuclear divisions, while meiosis includes one
Mitosis normally halves chromosome number, while meiosis preserves it
Mitosis pairs homologous chromosomes, while meiosis separates only sister chromatids
Mitosis usually produces two genetically similar daughter nuclei, while meiosis produces haploid cells through two divisions
10. Which change is associated with prophase?
Sister chromatids arrive at opposite poles and decondense
Chromatin condenses into visible chromosomes as the spindle begins forming
Chromosomes line up individually along the cell equator
The cytoplasm finishes dividing into two daughter cells
11. Under a microscope, each duplicated chromosome is attached to spindle fibers from opposite poles and arranged midway between them. What phase is shown?
Anaphase
Metaphase
Telophase
Cytokinesis
12. Which event most directly characterizes anaphase?
DNA is copied to form sister chromatids
Sister chromatids separate and move toward opposite poles
Chromosomes begin condensing from chromatin
New nuclear envelopes form around the chromosomes
13. During which phase are duplicated chromosomes positioned along the cell's equator?
Prophase
Anaphase
Metaphase
Telophase
14. A cell membrane is pinching inward to create a cleavage furrow. What does this observation indicate?
A plant cell is replicating DNA during interphase
A chromosome is attaching to spindle fibers during metaphase
An animal cell is dividing its cytoplasm during cytokinesis
An animal cell is pairing homologous chromosomes during meiosis
15. A dividing plant cell is building a cell plate between its two new nuclei. What will the cell plate become?
A spindle that moves chromosomes
Part of the new separating cell walls and membranes
A nuclear envelope around both chromosome sets
A structure that joins the daughter cells' chromosomes
16. A researcher sees chromosomes beginning to condense while the nuclear envelope is still present. Which phase best fits this observation?
Early prophase
Late anaphase
Metaphase
Cytokinesis