Question 1

Which of the following best explains why DNA must be packaged into chromosomes before cell division in eukaryotic cells?

Accepted Answer

To enable the accurate and efficient distribution of the entire genome to daughter cells

Question 2

During which phase of the cell cycle does DNA replication occur?

Accepted Answer

S phase

Question 3

A cell with 12 chromosomes undergoes mitosis. How many chromosomes will each daughter cell have after cytokinesis?

Accepted Answer

12

Question 4

Which structure is responsible for organizing the microtubules that separate chromosomes during mitosis?

Accepted Answer

Centrosome

Question 5

What is the primary difference between cytokinesis in plant cells and animal cells?

Accepted Answer

Animal cells form a cleavage furrow, while plant cells build a cell plate

Question 6

Which checkpoint in the cell cycle ensures that all chromosomes are properly attached to the spindle before separation?

Accepted Answer

M checkpoint

Question 7

Cancer cells are characterized by which of the following behaviors?

Accepted Answer

They ignore cell cycle checkpoints and divide uncontrollably

Question 8

Which of the following events occurs during anaphase of mitosis?

Accepted Answer

Sister chromatids separate and move toward opposite poles

Question 9

In binary fission, which is true about the genetic relationship between the parent and daughter cells?

Accepted Answer

Daughter cells are genetically identical to the parent cell

Question 10

A mutation causes a cell to skip the G1 checkpoint. What is a likely consequence?

Accepted Answer

The cell may replicate damaged DNA, leading to mutations

Question 11

Which of the following best describes the role of the kinetochore during mitosis?

Accepted Answer

It attaches spindle fibers to the centromere of each chromatid

Question 12

If a human skin cell fails to complete cytokinesis after mitosis, what will be the result?

Accepted Answer

One cell with two nuclei, each with a full set of chromosomes

Question 13

Which of the following is NOT a function of mitotic cell division in multicellular organisms?

Accepted Answer

Production of gametes

Question 14

A cell in metaphase is exposed to a drug that prevents microtubule disassembly. What is the most likely outcome?

Accepted Answer

Sister chromatids will not separate

Question 15

Which of the following equations correctly represents the relationship between the number of chromosomes ($$n) $$and chromatids ($$c) in a $$cell during prophase, if the cell has undergone DNA replication?

Accepted Answer

$$c = 2n$$

Question 16

Which of the following best describes the difference between chromatin and chromosomes?

Accepted Answer

Chromatin is the uncondensed DNA-protein complex, while chromosomes are condensed structures visible during cell division

Question 17

Which of the following scenarios best illustrates the importance of cell cycle checkpoints in preventing cancer?

Accepted Answer

A cell detects DNA damage and halts the cycle for repair before proceeding

Question 18

Which of the following is a key difference between binary fission in bacteria and mitosis in eukaryotes?

Accepted Answer

Binary fission involves a single circular DNA molecule, while mitosis involves multiple linear chromosomes

Question 19

Which of the following best describes what happens during telophase of mitosis?

Accepted Answer

Nuclear envelopes reform around each set of chromosomes

The Eukaryotic Cell Cycle and Mitosis: Structure, Function, and Regulation

Study Guide - Practice Questions

Study Guide - Flashcards