Free Cell Structure and Function MCQs with Answers

• A. G1
• B. G2
• C. Prophase
• D. Metaphase

Explanation: This is the first phase of cell cycle,where cell grows and carry out their normal functions.It is likely that the cell has not undergo…

• A. Are arrested at the S phase of the cell cycle
• B. Continue to divide even when they are tightly packed together
• C. Cannot function properly because they are affected by density dependent inhibition
• D. Are always in the M phase of the cell cycle

Explanation: Majority of cancer cells are always in the M phase of the cell cycle; they can be found in various phases depending on the specific…

• A. Cells with more than one nucleus
• B. Cells that are unusually small
• C. Cells lacking nuclei
• D. Destruction of chromosomes

Explanation: Mitosis is the process of nuclear division in which a cell's nucleus divides into two identical nuclei.

• A. Condensation of the chromosomes
• B. Replication of the DNA
• C. Separation of sister chromatids
• D. Separation of the spindle poles

Explanation: In mitosis, the separation of spindle poles is a critical event that ensures proper chromosome segregation during cell division.

• A. Volume increases faster than its surface area
• B. Surface area increases faster than its volume
• C. Volume increases, but its surface area stays the same
• D. Surface area stays the same, but its volume increases

Explanation: As a cell grows, its volume, determined by the amount of cytoplasm and organelles it contains, increases more rapidly than its surface…

• A. DNA overload
• B. Obtaining enough food
• C. Excess oxygen
• D. Expelling wastes

Explanation: Obtaining enough food is essential for cells as it provides the necessary nutrients and energy to fuel cellular processes and maintain…

• A. Cell division provides each daughter cell with its own copy of DNA
• B. Cell division increases the mass of the original cell
• C. Cell division increases the surface area of the original cell
• D. Cell division reduces the original cell's volume

Explanation: Cell division increases the mass of the original cell by producing two daughter cells, each with its own complement of cellular…

• A. G1 phase, DNA replication
• B. G2 phase, preparation for mitosis
• C. S phase, cell division
• D. M phase, cell growth

Explanation: During the G2 phase of the cell cycle, cells undergo significant preparation for mitosis.

• A. G1 phase
• B. G2 phase
• C. S phase
• D. M phase

Explanation: the S-phase (synthesis phase) during which the DNA is synthesized and (chromosome are replicated) The S phase, or synthesis phase, is a…

• A. Prophase
• B. Metaphase
• C. Telophase
• D. Anaphase

Explanation: During metaphase of mitosis, the chromosomes align along the metaphase plate, an imaginary plane equidistant between the two poles of the…

• A. It helps separate the chromosomes
• B. It breaks down the nuclear membrane
• C. It duplicates the DNA
• D. It divides the cell in half

Explanation: The spindle apparatus plays a crucial role in mitosis by ensuring the proper segregation of chromosomes into the daughter cells.

• A. Mitosis and interphase
• B. Synthesis and cytokinesis
• C. The M phase and the S phase
• D. Mitosis and cytokinesis

Explanation: Mitosis is the process of nuclear division in which the duplicated chromosomes are separated into two nuclei, ensuring that each daughter…

• A. Contact with other cells
• B. Growth factors
• C. A cut in the skin
• D. Cyclin that has been taken from a cell in mitosis

Explanation: Contact with other cells can affect the growth of a cell through a phenomenon known as contact inhibition.

• A. The cells lack cyclin
• B. The petri dish inhibits cell growth
• C. Contact with other cells stops cell growth
• D. Most cells grown in petri dishes have a defective p53

Explanation: If a cell lacks cyclin or has insufficient levels of cyclin, it may experience delays or abnormalities in cell cycle progression, leading…

• A. Regulate the cell cycle
• B. Cause cancer
• C. Produce p53
• D. Work to heat wounds

Explanation: Cyclins are proteins that help regulate the cell cycle. They work by binding to enzymes called cyclin-dependent kinases (CDKs), which…

• A. G1
• B. G0
• C. S
• D. G2

Explanation: The G1 phase is indeed a period of extensive metabolic activity! During this phase, the cell prepares itself for DNA replication and…

• A. 18 hours
• B. 6 hours
• C. 24 hours
• D. 12 hours

Explanation: The average cell cycle in human cells is around 24 hours, but it can vary depending on the cell type and other factors.

• A. Prophase
• B. Metaphase
• C. Telophase
• D. Interphase

Explanation: So, interphase is actually called the time between two consecutive divisions because it's the phase where the cell is not actively…

• A. Prophase
• B. Metaphase
• C. Telephase
• D. Inter phase

Explanation: The vesicles of the phragmoplast actually originate during telophase of cell division.

• A. Sex cells
• B. S-phase
• C. Somatic cells
• D. G2 stage

Explanation: Mutations in somatic cells can cause cancer because somatic cells make up our body tissues.