Question 1

Which of the following statements best describes a key difference between prokaryotic and eukaryotic cells?

Accepted Answer

Eukaryotic cells have their DNA enclosed within a nucleus, whereas prokaryotic cells have their DNA in a nucleoid region.

Question 2

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

Accepted Answer

S phase

Question 3

A scientist observes a cell with condensed chromosomes aligned at the metaphase plate and spindle fibers attached. Which stage of mitosis is this cell in?

Accepted Answer

Metaphase

Question 4

Which of the following best explains why mitosis is essential for multicellular organisms?

Accepted Answer

It enables growth, tissue repair, and replacement of cells.

Question 5

Which of the following equations correctly represents the central dogma of molecular biology?

Accepted Answer

$$DNA \rightarrow RNA \rightarrow Protein$$

Question 6

A mutation occurs in a gene that codes for a protein involved in spindle formation during mitosis. Which phase of mitosis is most likely to be directly affected?

Accepted Answer

Metaphase

Question 7

Which of the following is NOT a function of the cytoskeleton in eukaryotic cells?

Accepted Answer

Synthesizing DNA

Question 8

In a laboratory experiment, a student observes a cell with a cleavage furrow forming. What process is the cell undergoing?

Accepted Answer

Cytokinesis in an animal cell

Question 9

Which of the following best describes the genetic relationship between daughter cells produced by mitosis?

Accepted Answer

They are genetically identical to each other and to the parent cell.

Question 10

Which of the following statements about chromosomes is correct?

Accepted Answer

Eukaryotic chromosomes are linear and found within a membrane-bound nucleus.

Question 11

A cell is observed to have multiple origins of DNA replication and several linear chromosomes. Which type of cell is this most likely to be?

Accepted Answer

A eukaryotic cell

Question 12

Which of the following processes occurs in the nucleus of a eukaryotic cell?

Accepted Answer

Transcription

Question 13

Proteins destined for secretion from a eukaryotic cell are generally translated in:

Accepted Answer

ribosomes found on the endoplasmic reticulum

Question 14

Which of the following is a correct description of a gene?

Accepted Answer

A gene is a discrete unit of hereditary information consisting of a specific nucleotide sequence in DNA.

Question 15

Which of the following best describes binary fission?

Accepted Answer

A process by which prokaryotic cells replicate their genome and divide into two identical cells.

Question 16

A human somatic cell contains 46 chromosomes. After mitosis and cytokinesis, how many chromosomes will each daughter cell contain?

Accepted Answer

46

Question 17

Which of the following is NOT a characteristic of eukaryotic cells?

Accepted Answer

Circular chromosomes

Question 18

Which of the following best explains why cells must duplicate their organelles before cell division?

Accepted Answer

To ensure each daughter cell has the necessary components for survival and function.

Question 19

Which of the following is true regarding the nuclear membrane in eukaryotic cells?

Accepted Answer

It contains nuclear pores that allow the transport of mRNA and other molecules.

Question 20

Which of the following best describes the role of ribosomes in eukaryotic cells?

Accepted Answer

They synthesize proteins based on mRNA sequences.

Cell Structure, Cell Cycle, and Mitosis: Foundations of Genetics and Evolutionary Biology

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