Cell Cycle And Organelles
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What is the main control center of the cell?
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Nucleus
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Plasma membrane
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Mitochondrion
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Ribosome
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Explore the fundamentals of cell division in this quiz titled 'Cell Cycle and Organelles'. It covers key stages such as interphase, mitosis phases, and cytokinesis, alongside the structure of chromosomes. Ideal for students enhancing their understanding of cellular biology.
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- 2.
During prophase, the chromosomes doubled. The two halves are stuck together in the middle by a centromere. What are the names of these two halves of a doubled chromosome?
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Doubleomes
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Father chromosomes
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Sister chromatids
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Spindle fibers
Correct Answer
A. Sister chromatidsExplanation
During prophase, the chromosomes duplicate and form two identical copies called sister chromatids. These sister chromatids are attached to each other at the centromere, which holds them together until they separate during cell division. The term "doubleomes" is not a scientifically recognized term, "father chromosomes" is not an accurate description of the duplicated chromosomes, and "spindle fibers" are not the names of the two halves of a doubled chromosome. Therefore, the correct answer is sister chromatids.Rate this question:
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- 3.
Mitosis has four stages during which time the chromosome number is doubled and two new cell nuclei is formed from one. What are these four stages in order?
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Prophase, metaphase, anaphase, telophase
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Interphase, prophase, anaphase, metaphase
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Prophase, metaphase, telophase, interphase
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Cytokinesis, metaphase, prophase, interphase
Correct Answer
A. Prophase, metaphase, anaphase, telophaseExplanation
Interphase and cytokinesis are not part of mitosis. They are the other two stages in the cell cycle, along with mitosis.Rate this question:
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- 4.
What happens to the cell during cytokinesis?
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The nucleus divides.
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The cytoplasm divides, forming two new cells.
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The cell rests and grows.
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The chromosomes are doubled.
Correct Answer
A. The cytoplasm divides, forming two new cells.Explanation
During cytokinesis, the cytoplasm of the cell divides, resulting in the formation of two new cells. This process is the final stage of cell division, following the separation of the duplicated chromosomes in the nucleus. The division of the cytoplasm ensures that each new cell receives a complete set of organelles and cellular components, allowing them to function independently. Therefore, the correct answer is that the cytoplasm divides, forming two new cells.Rate this question:
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- 5.
Which cell organelle is the site of protein synthesis?
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Ribosome
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Mitochondrion
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Golgi apparatus
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Lysosome
Correct Answer
A. RibosomeExplanation
The ribosome is the site of protein synthesis in a cell. It is a small, spherical organelle found in the cytoplasm or attached to the endoplasmic reticulum. Ribosomes are responsible for translating the genetic information from DNA into proteins. They do this by assembling amino acids in the correct order to form a polypeptide chain, which then folds into a functional protein. The ribosome consists of two subunits, a large and a small subunit, that work together to carry out protein synthesis.Rate this question:
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- 6.
Sister chromatids are pulled apart to opposite sides of the cell by protein strands called....
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Centromeres
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Spindle fibers
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Membranes
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Fibroids
Correct Answer
A. Spindle fibersExplanation
During cell division, sister chromatids, which are identical copies of each other, need to be separated and pulled to opposite sides of the cell. This process is facilitated by protein strands called spindle fibers. These fibers attach to the centromeres of the sister chromatids and exert force to pull them apart, ensuring that each new cell receives a complete set of chromosomes. Therefore, spindle fibers are responsible for the accurate distribution of genetic material during cell division.Rate this question:
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- 7.
The stage in the cell cycle during which the cell grows and rests is called....
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Prophase
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Metaphase
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Interphase
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Anaphase
Correct Answer
A. InterphaseExplanation
Interphase is the first stage of the cell cycle. The cell rests, then grows and gets ready to divide again.Rate this question:
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- 8.
Which two structures are found in plant cells but not in animal cells?
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Plasma membrane
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Cell wall
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Nucleus
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Chloroplast
Correct Answer(s)
A. Cell wall
A. ChloroplastExplanation
The cell wall is a rigid structure found in plant cells that provides support and protection. It is composed of cellulose and is responsible for maintaining the shape of the cell. Animal cells do not have a cell wall. Chloroplasts are also found in plant cells but not in animal cells. They are responsible for photosynthesis, converting sunlight into energy. These structures contain chlorophyll, which gives plants their green color. The absence of chloroplasts in animal cells is one of the reasons why animals cannot produce their own food through photosynthesis.Rate this question:
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- 9.
As cells divide, making two from one, they continue to get smaller and smaller.
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True
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False
Correct Answer
A. FalseExplanation
Cells divide, then the new cells grow back to their original size.Rate this question:
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- 10.
Nearly every cell in your body is different from the cells that were in your body last year.
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True
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False
Correct Answer
A. TrueExplanation
Cells constantly die and are replaced with new cells through mitosis.Rate this question:
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- 11.
This organelle acts as a sort of "traffic cop" that lets certain things in and out of a cell.
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Nucleus
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Ribosome
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Plasma membrane
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Cell wall
Correct Answer
A. Plasma membraneExplanation
The plasma membrane acts as a "traffic cop" for the cell by regulating the movement of substances in and out of the cell. It is selectively permeable, allowing certain molecules to pass through while preventing others from entering or leaving the cell. This control over the flow of substances is essential for maintaining the cell's internal environment and carrying out various cellular processes. The plasma membrane also plays a role in cell signaling and communication with the external environment.Rate this question:
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- 12.
Prokaryotic cells (prokaryotes) are very simple cells that do not have a _________.
Correct Answer
nucleusExplanation
Only eukaryotes have a nucleus.Rate this question:
- 13.
Check all the ones that are stages in mitosis.
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Interphase
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Prophase
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Anaphase
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Telophase
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Cytokinesis
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Metaphase
Correct Answer(s)
A. Prophase
A. Anaphase
A. Telophase
A. MetaphaseExplanation
The stages in mitosis are: Prophase, Metaphase, Anaphase and Telophase. Cytokinesis is not a stage in mitosis; it is the division of the cytoplasm that occurs at the end of the cell cycle. Interphase is also not a stage in mitosis; it is the phase before mitosis begins where the cell undergoes growth and DNA replication. Interphase is the resting stage of the cell cycle and cytokinesis is when the cytoplasm divides. Mitosis concerns only the nucleus and chromosomes.Rate this question:
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- 14.
How many main stages are there in the cell cycle?
Correct Answer(s)
three
3Explanation
There are three: Interphase, mitosis, and cytokinesisRate this question:
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Current Version
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Feb 02, 2024Quiz Edited by
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Oct 13, 2010Quiz Created by
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