Question 1

Which of the following best describes the main purpose of cell division in multicellular eukaryotes?

Accepted Answer

To enable the organism to develop from a single cell and to renew, repair, or replace cells as needed

Question 2

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

Accepted Answer

S phase

Question 3

What is the correct sequence of mitosis phases?

Accepted Answer

Prophase, Prometaphase, Metaphase, Anaphase, Telophase

Question 4

Which structure is responsible for organizing microtubules during mitosis in animal cells?

Accepted Answer

Centrosome

Question 5

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

Accepted Answer

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

Question 6

Which of the following statements about chromosomes is correct?

Accepted Answer

The centromere is where the two chromatids are most closely attached

Question 7

What is the role of checkpoints in the cell cycle?

Accepted Answer

To stop the cell cycle until a go-ahead signal is received

Question 8

Which of the following best describes density-dependent inhibition?

Accepted Answer

Crowded cells stop dividing

Question 9

Cancer cells differ from normal cells in that they:

Accepted Answer

Exhibit neither density-dependent inhibition nor anchorage dependence

Question 10

Which of the following is true about binary fission in bacteria?

Accepted Answer

It results in two genetically identical daughter cells

Question 11

If a eukaryotic cell has 8 chromosomes in $$G_1$$ phase, how many chromatids will it have during metaphase?

Accepted Answer

$$16$$

Question 12

Which protein complex assembles on sections of DNA at centromeres to help move chromosomes during mitosis?

Accepted Answer

Kinetochore

Question 13

A mutation causes a cell to ignore the $$G_1$$ checkpoint. What is a likely consequence?

Accepted Answer

The cell may divide uncontrollably, potentially leading to cancer

Question 14

Which of the following best describes the genome of a eukaryotic cell?

Accepted Answer

All the DNA in a cell

Question 15

What is the function of cyclins in the cell cycle?

Accepted Answer

They regulate the timing of the cell cycle in eukaryotic cells

Question 16

Which event occurs during anaphase of mitosis?

Accepted Answer

Sister chromatids separate and move toward opposite poles

Question 17

A scientist observes a cell with a cell plate forming in the center. What type of cell is this most likely?

Accepted Answer

Plant cell during cytokinesis

Question 18

Which of the following is a characteristic of malignant tumors?

Accepted Answer

They invade surrounding tissues and can metastasize

Question 19

If a cell is exposed to a growth factor, what is the most likely result?

Accepted Answer

The cell will be stimulated to divide

Question 20

Which of the following best explains why gametes have only one set of chromosomes?

Accepted Answer

To maintain a constant chromosome number after fertilization

The Cell Cycle and Cell Division

Study Guide - Practice Questions