Question 1

Which of the following best describes the outcome of mitosis in a typical eukaryotic somatic cell?

Accepted Answer

Two daughter cells, each genetically identical to the parent cell

Question 2

During which phase of the cell cycle is DNA replicated?

Accepted Answer

S phase

Question 3

What is the primary function of the mitotic spindle during mitosis?

Accepted Answer

To separate sister chromatids and move them to opposite poles

Question 4

Which checkpoint in the cell cycle is considered the most important for determining whether a cell will divide?

Accepted Answer

G$$_1$$ checkpoint

Question 5

A researcher observes a cell with condensed chromosomes aligned at the center of the cell. Which stage of mitosis is this cell in?

Accepted Answer

Metaphase

Question 6

Which of the following statements about cancer cells is TRUE?

Accepted Answer

Cancer cells can divide indefinitely due to loss of cell cycle control

Question 7

In animal cells, cytokinesis is accomplished by which process?

Accepted Answer

Cleavage furrow formation

Question 8

Which molecular complex triggers a cell’s passage past the G$$_2$$ checkpoint into M phase?

Accepted Answer

Maturation-promoting factor (MPF)

Question 9

What is the role of cohesins during mitosis?

Accepted Answer

They hold sister chromatids together at the centromere

Question 10

Which process is used by prokaryotes such as bacteria to divide?

Accepted Answer

Binary fission

Question 11

A cell receives a 'stop' signal at the G$$_1$$ checkpoint. What is the most likely fate of this cell?

Accepted Answer

It will switch into a nondividing state called G$$_0$$

Question 12

Which of the following best explains why multicellular organisms need cell division for renewal and repair?

Accepted Answer

Cell division replaces damaged or dead cells to maintain tissue function

Question 13

Which of the following is a characteristic of density-dependent inhibition?

Accepted Answer

Cells stop dividing when they touch neighboring cells

Question 14

If a eukaryotic cell has 20 chromosomes in G$$_1$$, how many chromatids will it have during metaphase of mitosis?

Accepted Answer

$$40$$

Question 15

Which of the following events occurs during anaphase of mitosis?

Accepted Answer

Sister chromatids are separated and move toward opposite poles

Question 16

A scientist adds platelet-derived growth factor (PDGF) to a culture of fibroblasts. What is the expected result?

Accepted Answer

The fibroblasts will begin to divide in response to the growth factor

Question 17

Which of the following is TRUE about the genome of eukaryotic cells?

Accepted Answer

It is packaged into multiple linear chromosomes

Question 18

Which of the following is a difference between benign and malignant tumors?

Accepted Answer

Malignant tumors can metastasize to other parts of the body, while benign tumors remain localized

Question 19

Which of the following best describes the role of cyclins in the cell cycle?

Accepted Answer

Cyclins are proteins whose concentrations fluctuate and regulate Cdks

Question 20

A cell is observed to have a cell plate forming during cytokinesis. What type of cell is this most likely to be?

Accepted Answer

A plant cell

The Cell Cycle: Mechanisms and Regulation

Study Guide - Practice Questions