Do You Know About Cell Division?
Questions and Answers
- 1.
The first phase of mitosis is __________
- A.
Interphase
- B.
Prophase
- C.
Metaphase
Correct Answer
B. PropHaseExplanation
The correct answer is prophase. During prophase, the chromatin condenses into visible chromosomes, the nuclear membrane breaks down, and the spindle fibers begin to form. This is the first phase of mitosis where the cell prepares for division by organizing its genetic material and breaking down the nuclear envelope.Rate this question:
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- 2.
Cell division is
- A.
The production of genetically identical offspring from a single parent
- B.
The process of two cells forming into one cell
- C.
The process by which a cell divides into two new daughter cells
Correct Answer
C. The process by which a cell divides into two new daughter cellsExplanation
Cell division is the process by which a cell divides into two new daughter cells. During cell division, the genetic material in the cell is replicated and then distributed equally between the two daughter cells. This ensures that each daughter cell receives a complete set of genetic information. Cell division is essential for growth, development, and repair in multicellular organisms. It allows for the production of new cells to replace old or damaged ones, as well as the formation of new organisms through reproduction.Rate this question:
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- 3.
Genetic information bundled into packages of DNA is known as...
- A.
Chromosomes
- B.
Chromatin
- C.
Centrioles
Correct Answer
A. ChromosomesExplanation
Genetic information is stored in the form of DNA, which is organized and packaged into structures called chromosomes. Chromosomes are thread-like structures made up of DNA and proteins, and they carry the genes that determine an organism's traits. During cell division, chromosomes condense and become visible under a microscope. Therefore, chromosomes are the correct answer as they accurately represent the bundles of genetic information in the form of DNA.Rate this question:
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- 4.
Cells go through a series of events known as the
- A.
Cell cycle
- B.
Cell spindrum
- C.
Cell process
Correct Answer
A. Cell cycleExplanation
The correct answer is "cell cycle." The cell cycle refers to the sequence of events that a cell goes through as it grows and divides into two daughter cells. It consists of interphase (cell growth and DNA replication) and mitosis (cell division). The cell cycle is essential for the growth and development of organisms, as well as for tissue repair and replacement.Rate this question:
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- 5.
The G1 phase is also called ____
- A.
Cell growth
- B.
DNA replication
- C.
Cell division
Correct Answer
A. Cell growthExplanation
The G1 phase of the cell cycle is known as the cell growth phase. During this phase, cells increase in size, synthesize new proteins and organelles, and prepare for DNA replication. This phase is crucial for the overall growth and development of the cell before it proceeds to the next phases of the cell cycle. Therefore, the correct answer is "Cell growth."Rate this question:
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- 6.
Following Anaphase is _________
- A.
Metaphase
- B.
Cytokinesis
- C.
Telophase
Correct Answer
C. TelopHaseExplanation
Telophase is the correct answer because it is the next phase that follows anaphase in the process of cell division, specifically in mitosis. During telophase, the chromosomes reach the opposite poles of the cell, the nuclear envelope starts to reform around them, and the spindle apparatus disassembles. This phase marks the end of nuclear division and prepares for the final stage, cytokinesis, where the cytoplasm divides to form two daughter cells. Metaphase occurs before anaphase and is characterized by the alignment of chromosomes at the center of the cell.Rate this question:
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- 7.
This is Anaphase
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement "This is Anaphase" is false. Anaphase is a stage in cell division where the chromosomes separate and move towards opposite ends of the cell. The given statement does not provide any context or information about what "this" refers to, so it cannot be determined if it is anaphase or not. Therefore, the correct answer is false.Rate this question:
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- 8.
Living cells store critical information in a molecule known as DNA
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Living cells store critical information in a molecule known as DNA. This is because DNA contains the genetic instructions that are necessary for the development, functioning, and reproduction of all living organisms. DNA carries the genetic code that determines an organism's traits and characteristics. It is made up of a sequence of nucleotides and is organized into structures called chromosomes. Through processes like replication and transcription, DNA is able to store and transmit this vital information from one generation to the next. Therefore, the statement "Living cells store critical information in a molecule known as DNA" is true.Rate this question:
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- 9.
The larger a cell gets, the smaller the demands the cell places on its DNA.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
As a cell grows larger, its demands on its DNA actually increase rather than decrease. This is because the DNA in a cell contains the genetic information necessary for all the cell's functions and activities. As the cell grows, it needs more DNA to support its increased metabolic and synthetic activities. Therefore, the statement that the larger a cell gets, the smaller the demands it places on its DNA is incorrect.Rate this question:
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- 10.
Sexual reproduction is when a single parent splits in two to form its offspring
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Sexual reproduction involves the fusion of two gametes (sex cells) from two parents to form offspring. It requires the involvement of both male and female reproductive organs and is a process that promotes genetic diversity. In contrast, asexual reproduction is when a single parent produces offspring that are genetically identical to itself, usually through methods like binary fission or budding. Therefore, the given statement is incorrect as it describes a form of asexual reproduction, not sexual reproduction.Rate this question:
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- 11.
The "G" in G1 and G2 stand for growth.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The G stands for "gap"Rate this question:
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- 12.
Which occur in the G1 phase?
- A.
Cell Growth
- B.
Cells synthesize new proteins
- C.
DNA Replication
- D.
Chromosomes tear apart
Correct Answer(s)
A. Cell Growth
B. Cells synthesize new proteinsExplanation
In the G1 phase of the cell cycle, cells undergo growth and prepare for DNA replication. During this phase, cells increase in size and synthesize new proteins to support the upcoming division. DNA replication, on the other hand, occurs in the S phase of the cell cycle, not in the G1 phase. Chromosomes tearing apart is not a process that occurs in the G1 phase.Rate this question:
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- 13.
During Prophase, which of these things DO happen?
- A.
Genetic material inside the nucleus condenses
- B.
Chromatids separate
- C.
Spindle starts to form
- D.
Duplicated chromosomes become visible
- E.
The centrioles are located
Correct Answer(s)
A. Genetic material inside the nucleus condenses
C. Spindle starts to form
D. Duplicated chromosomes become visible
E. The centrioles are locatedExplanation
During Prophase, several events occur. Firstly, the genetic material inside the nucleus condenses, which means that the long, thin strands of DNA become more tightly packed and visible under a microscope. Secondly, the spindle starts to form, which is a structure made up of microtubules that helps to separate the duplicated chromosomes later in cell division. Thirdly, the duplicated chromosomes become visible, as they condense further and become distinct structures. Lastly, the centrioles are located, which are small structures involved in the formation of the spindle.Rate this question:
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- 14.
During ________ the chromosomes, which were distinct and condensed, begin to spread out into a tangle of chromatin. A nuclear envelope re-forms around each cluster if chromosomes. The spindle begins to break apart.
Correct Answer(s)
Telophase
TelaphaseExplanation
Telophase is the correct answer. During telophase, the chromosomes, which were previously condensed and distinct, begin to spread out into a tangle of chromatin. Additionally, a nuclear envelope reforms around each cluster of chromosomes, and the spindle fibers start to break apart. Telaphase, on the other hand, is not a recognized term in biology and does not describe any specific phase of cell division.Rate this question:
- 15.
The second stage of mitosis is ________
Correct Answer(s)
metaphaseExplanation
The second stage of mitosis is metaphase. During metaphase, the chromosomes line up along the equator of the cell, forming a metaphase plate. This alignment ensures that each daughter cell will receive an equal number of chromosomes during cell division. The spindle fibers attach to the centromeres of the chromosomes, preparing for their separation in the next stage of mitosis.Rate this question:
- 16.
The M phase is the process of ____________
Correct Answer(s)
cell divisionExplanation
The M phase refers to the phase in the cell cycle where cell division occurs. During this phase, the cell undergoes mitosis, which is the division of the nucleus, followed by cytokinesis, which is the division of the cytoplasm. The M phase is crucial for the growth and development of organisms as it ensures the proper distribution of genetic material and the formation of new cells.Rate this question:
- 17.
During metaphase, the ___________ of the duplicated chromosomes line up across the center of the cell.
Correct Answer(s)
centromeresExplanation
During metaphase, the centromeres of the duplicated chromosomes line up across the center of the cell. Centromeres are specialized regions on the chromosomes that hold the sister chromatids together. They play a crucial role in ensuring that the chromosomes are correctly separated during cell division. In metaphase, the chromosomes condense and align along the metaphase plate, an imaginary plane in the center of the cell. The centromeres are responsible for this alignment, allowing for the equal distribution of genetic material to the daughter cells during the subsequent stages of cell division.Rate this question:
- 18.
During ______________, spindle fibers connect the centromere of each chromosome to the two poles of the spindle.
Correct Answer(s)
metaphaseExplanation
During metaphase, spindle fibers connect the centromere of each chromosome to the two poles of the spindle. This is a crucial step in cell division, specifically in mitosis. The spindle fibers ensure that each chromosome is properly aligned at the center of the cell, forming what is known as the metaphase plate. This alignment is essential for the equal distribution of genetic material to the daughter cells during the subsequent step of anaphase. Therefore, metaphase is the phase in which the spindle fibers play a vital role in ensuring accurate chromosome segregation.Rate this question:
- 19.
This is a picture of _________
Correct Answer(s)
telophase - 20.
During cytokenisis the cytoplasm pinches in half. Each daughter cell has an identical set of duplicate _____________.
Correct Answer(s)
ChromosomesExplanation
During cytokinesis, the cytoplasm of the parent cell divides into two daughter cells. Each daughter cell receives an identical set of duplicate chromosomes. Chromosomes are the structures that contain the genetic material of an organism, and they are responsible for passing on traits from one generation to the next. Therefore, it is logical that during cell division, each daughter cell would receive a complete and identical set of chromosomes to ensure the accurate transmission of genetic information.Rate this question:
- 21.
Cytokenisis in plant cells occurs differently, since the cell membrane is not flexible enough to draw inward (due to the rigid cell wall that surrounds it) a structure called a __________ _________ forms halfway between the divided nuclei/
Correct Answer(s)
cell plateExplanation
During cytokinesis in plant cells, the cell membrane cannot pinch inward like in animal cells due to the presence of a rigid cell wall. Instead, a structure called a cell plate forms halfway between the divided nuclei. This cell plate is made up of vesicles containing cell wall materials and eventually fuses with the existing cell wall, separating the two daughter cells. The formation of the cell plate allows for the successful division of the cytoplasm and organelles in plant cells.Rate this question:
- 22.
The S Phase is _____ ___________
Correct Answer(s)
DNA replicationExplanation
The S Phase is the phase of the cell cycle where DNA replication takes place. During this phase, the cell's DNA is duplicated in preparation for cell division. DNA replication is a crucial process that ensures that each daughter cell receives a complete set of genetic information. This phase is tightly regulated to maintain the integrity and fidelity of the DNA replication process.Rate this question:
- 23.
At one time, biologists described the life of a cell as one cell division after another separated by an "in-between" period of growth called __________
Correct Answer(s)
interphaseExplanation
Interphase is the period in the cell cycle where the cell grows and carries out its normal functions before it divides. It is the longest phase of the cell cycle and consists of three subphases: G1 phase (cell growth and preparation for DNA replication), S phase (DNA replication), and G2 phase (further growth and preparation for cell division). During interphase, the cell accumulates the necessary energy and nutrients, replicates its DNA, and prepares for cell division. It is a crucial stage for the cell to ensure proper division and the production of two genetically identical daughter cells.Rate this question:
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Sep 25, 2024Quiz Edited by
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Jan 17, 2011Quiz Created by
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