Question 1

Which statement best summarizes the Cell Theory?

Accepted Answer

Cells are the smallest units that perform all vital physiological functions, are the building blocks of all plants and animals, and are produced by the division of preexisting cells.

Question 2

During which phase of the cell cycle do most somatic cells spend the majority of their lives, performing their normal functions?

Accepted Answer

Interphase

Question 3

Which of the following is a key difference between prokaryotic and eukaryotic cells?

Accepted Answer

Eukaryotic cells contain organelles and chromosomes, while prokaryotic cells lack organelles and have DNA not organized in chromosomes.

Question 4

Which process is responsible for the production of sex cells in eukaryotes?

Accepted Answer

Meiosis

Question 5

A scientist observes a cell dividing and notes that the resulting daughter cells are genetically identical to the parent cell. Which process is most likely occurring?

Accepted Answer

Mitosis

Question 6

Which phase of mitosis is characterized by the alignment of chromosomes along the center of the cell?

Accepted Answer

Metaphase

Question 7

What is the primary function of microtubules during mitosis?

Accepted Answer

To form the mitotic spindle and separate sister chromatids

Question 8

Paclitaxel (Taxol) is used in cancer treatment because it interferes with which cellular structure?

Accepted Answer

Microtubules

Question 9

Which equation best represents the result of mitosis in terms of chromosome number in human cells?

Accepted Answer

$$2n \rightarrow 2n + 2n$$

Question 10

A mutation causes a cell to undergo uncontrolled mitosis. What is the most likely consequence?

Accepted Answer

The cell will become cancerous.

Question 11

Which of the following best describes the genetic identity of daughter cells produced by meiosis?

Accepted Answer

They are genetically unique from each other and the parent cell.

Question 12

Which real-world example demonstrates the importance of cell division in medical research?

Accepted Answer

The use of HeLa cells, derived from Henrietta Lacks, for cancer and vaccine research.

Question 13

Which of the following is NOT a function of the cell membrane?

Accepted Answer

Packaging DNA into chromosomes

Question 14

Which type of cell division is used by bacteria to reproduce rapidly under favorable conditions?

Accepted Answer

Binary fission

Question 15

If a human cell undergoes meiosis, how many chromosomes will each resulting daughter cell contain?

Accepted Answer

$$23$$

Question 16

Which of the following best explains why stem cells are important for growth and development?

Accepted Answer

They can differentiate into various cell types needed for tissue repair and growth.

Question 17

Which phase of mitosis involves the separation of sister chromatids?

Accepted Answer

Anaphase

Question 18

Which of the following is a consequence of errors in chromosome packaging during cell division?

Accepted Answer

Development of genetic disorders due to incorrect chromosome number or structure

Question 19

Which equation represents the reduction in chromosome number during meiosis?

Accepted Answer

$$2n \rightarrow n + n + n + n$$

Question 20

Which of the following statements about sexual and asexual reproduction is correct?

Accepted Answer

Sexual reproduction involves meiosis and results in genetic diversity.

Cell Biology: Cell Theory, Cell Division, and Cellular Diversity

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