Question 1

Which of the following best describes the difference between sister chromatids and homologous chromosomes?

Accepted Answer

Sister chromatids are identical copies of a chromosome joined at the centromere, while homologous chromosomes are similar but not identical chromosomes inherited from each parent.

Question 2

During which phase of mitosis do chromosomes align at the center of the cell?

Accepted Answer

Metaphase

Question 3

Which structure is responsible for separating sister chromatids during anaphase?

Accepted Answer

Spindle fibers

Question 4

A researcher observes a cell with chromosomes condensing and the nuclear envelope breaking down. Which stage of mitosis is this cell most likely in?

Accepted Answer

Prophase

Question 5

Which of the following correctly lists the order of the phases of mitosis?

Accepted Answer

Prophase, metaphase, anaphase, telophase

Question 6

Which event occurs during the S phase of the cell cycle?

Accepted Answer

DNA replication

Question 7

In animal cells, cytokinesis is accomplished by the formation of a cleavage furrow. In plant cells, what structure forms to accomplish cytokinesis?

Accepted Answer

Cell plate

Question 8

Which of the following is a function of mitosis in multicellular organisms?

Accepted Answer

Growth and tissue repair

Question 9

A cell is observed to have chromosomes being pulled apart toward opposite poles. Which phase of mitosis is this?

Accepted Answer

Anaphase

Question 10

Which checkpoint in the cell cycle ensures that DNA has been properly replicated before the cell enters mitosis?

Accepted Answer

G2 checkpoint

Question 11

If a mutation prevents the formation of microtubules, which process would be directly affected?

Accepted Answer

Chromosome movement during mitosis

Question 12

Which of the following best explains why homologous chromosomes are important in sexual reproduction?

Accepted Answer

They allow for genetic variation through recombination.

Question 13

Which formula correctly represents the number of chromosomes after DNA replication but before cell division in a diploid cell with $$n$$ chromosomes?

Accepted Answer

$$2n$$

Question 14

A scientist observes a cell with a visible cell plate forming between two nuclei. What type of cell is this most likely?

Accepted Answer

Plant cell

Question 15

Which of the following is NOT a function of mitosis?

Accepted Answer

Production of gametes for sexual reproduction

Question 16

During which stage of the cell cycle does the cell grow and carry out normal functions, but does NOT replicate its DNA?

Accepted Answer

G1 phase

Question 17

Which of the following structures attaches to chromosomes to help move them during mitosis?

Accepted Answer

Kinetochore

Question 18

A cell fails to complete cytokinesis after mitosis. What is the most likely result?

Accepted Answer

A single cell with two nuclei

Question 19

Which phase of the cell cycle is characterized by the synthesis of proteins required for mitosis?

Accepted Answer

G2 phase

Question 20

If a cell starts with 8 chromosomes, how many chromosomes will each daughter cell have after mitosis?

Accepted Answer

8

Cell Cycle, Mitosis, and Chromosome Structure: Study Notes

Guida di studio - Domande di pratica

Study guide - Flashcard