Cell Organelle Test - B
Welcome to the electronic classroom frontier of the 21st century. This test will use your biology knowledge of cellular organelles as it relates to their structure and function. This test has unlimited number of attempts suited to your learning and testing needs. It will randomize 25 out of 30 questions for each attempt.
I wish you best of luck on your learning of the various biological principles!
Questions and Answers
- 1.
Central Vacuoles are found in Animal, Bacteria, and Plant cells.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Central vacuoles are not found in animal and bacteria cells. They are only found in plant cells. Central vacuoles are large, membrane-bound organelles that occupy most of the space in the plant cell. They play a crucial role in maintaining cell turgidity, storing water, nutrients, and waste products, and regulating cell growth and development. In animal cells, small vacuoles may be present, but they are not as prominent or central as in plant cells. In bacteria cells, vacuoles are absent altogether. Therefore, the statement that central vacuoles are found in animal, bacteria, and plant cells is false.Rate this question:
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- 2.
___ organelles are found in animal cells and are used during cell mitosis to pull chromosomes apart as shown below.
- A.
Golgi Apparatus
- B.
Lysosome
- C.
Centrioles
- D.
Chloroplasts
- E.
Preoxisome
Correct Answer
C. CentriolesExplanation
Centrioles are organelles found in animal cells that play a crucial role during cell mitosis. They are responsible for pulling apart the chromosomes to ensure each new cell receives the correct number of chromosomes. This process is essential for the proper division and distribution of genetic material during cell division. Centrioles are composed of microtubules and are located in a region of the cell called the centrosome. They are not found in plant cells, making them a unique feature of animal cell mitosis.Rate this question:
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- 3.
An unorganized nucleus is located in which of the following cells.
- A.
Animal
- B.
Bacteria
- C.
Plant
- D.
Fungus
- E.
Virus
Correct Answer
B. BacteriaExplanation
Bacteria have an unorganized nucleus. Unlike eukaryotic cells, which have a well-defined nucleus enclosed within a nuclear membrane, bacteria have a nucleoid region where their genetic material is located. This region is not surrounded by a membrane and lacks the organized structure of a true nucleus. Therefore, bacteria have an unorganized nucleus compared to cells found in animals, plants, fungi, and viruses.Rate this question:
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- 4.
Which organelle is used to digest worn-out organelles in the cell?
- A.
Golgi Apparatus
- B.
Lysosomes
- C.
Mitochondrion
- D.
Ribosomes
- E.
Nuclear Pore
Correct Answer
B. LysosomesExplanation
Lysosomes are the organelles responsible for digesting worn-out organelles in the cell. They contain enzymes that break down cellular waste materials, such as old organelles, into smaller molecules that can be recycled or eliminated from the cell. Lysosomes are involved in the process of autophagy, which is the degradation and recycling of cellular components. This helps to maintain the overall health and functioning of the cell.Rate this question:
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- 5.
The Smooth Endoplasmic Reticulum aids to detoxify drugs and poisons in the liver.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The Smooth Endoplasmic Reticulum does play a role in detoxification, but it is mainly involved in lipid and steroid synthesis, as well as the metabolism of carbohydrates. The liver contains a large amount of Smooth Endoplasmic Reticulum, which helps with these functions, but it is not specifically responsible for detoxifying drugs and poisons. This task is primarily carried out by the liver's microsomes and other enzymes. Therefore, the statement that the Smooth Endoplasmic Reticulum aids in detoxification in the liver is false.Rate this question:
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- 6.
Recent research indicates that mitochondrion has it's own DNA.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Recent research has shown that mitochondria, which are organelles found in cells, have their own DNA. This DNA is separate from the DNA found in the nucleus of the cell. Mitochondrial DNA is responsible for encoding certain proteins and RNA molecules that are essential for the functioning of the mitochondria. This discovery has significant implications for understanding the evolution and function of mitochondria, as well as their role in various diseases and disorders.Rate this question:
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- 7.
___ are composed of DNA and protein.
- A.
Amyloplasm
- B.
Chromatin
- C.
Chromosomes
- D.
Golgi Apparatus
- E.
Nucleus
Correct Answer
C. ChromosomesExplanation
Chromosomes are composed of DNA and protein. DNA contains the genetic information that is passed on from one generation to the next, while proteins help in organizing and structuring the DNA. Chromosomes are found in the nucleus of cells and play a crucial role in cell division and the transmission of genetic material.Rate this question:
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- 8.
Most nucleus contains a smaller dense structure called a nucleolus.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The nucleolus is a distinct structure found within the nucleus of most cells. It is responsible for the production and assembly of ribosomes, which are essential for protein synthesis. The nucleolus is composed of proteins and RNA, and its presence is a characteristic feature of actively dividing cells. Therefore, it is correct to say that most nuclei contain a smaller dense structure called a nucleolus.Rate this question:
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- 9.
Choose the correct organelle that is responsible for the production of energy (ATP).
- A.
Chloroplast
- B.
Microtubules
- C.
Mitchondrion
- D.
Nuclear Membrane
- E.
Cytosol
Correct Answer
C. MitchondrionExplanation
The mitochondrion is responsible for the production of energy (ATP) in the cell. It is often referred to as the "powerhouse" of the cell because it carries out cellular respiration, a process that generates ATP through the breakdown of glucose and other molecules. Mitochondria have their own DNA and can replicate independently within the cell. They are found in large numbers in cells that require a lot of energy, such as muscle cells.Rate this question:
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- 10.
Covering the surface of a nuclear membrane are protein-lined openings (3) called___.
- A.
Nucleus
- B.
Nuclear Pore
- C.
Nuclear Ribosome
- D.
Rough E.R.
- E.
Ribosomes
Correct Answer
B. Nuclear PoreExplanation
The correct answer is "Nuclear Pore". The question is asking for the name of the protein-lined openings on the surface of a nuclear membrane. These openings are called nuclear pores, which allow for the transport of molecules in and out of the nucleus.Rate this question:
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- 11.
What is the name of this organelle shown below?
- A.
Nucleus
- B.
Centrioles
- C.
Chromoplasts
- D.
Nucleoid
- E.
Plasmodesmata
Correct Answer
B. CentriolesExplanation
Centrioles are small cylindrical structures found in animal cells that play a crucial role in cell division. They are involved in the formation of the spindle fibers that help separate the chromosomes during cell division. The image shown below represents centrioles, which are typically found in pairs near the nucleus of the cell.Rate this question:
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- 12.
Please identify the organelle which is present in the photograph below.
- A.
Nucleolus
- B.
Smooth Endoplasmic Reticulum
- C.
Golgi Apparatus
- D.
Nucleoid
- E.
Plasmodesmata
Correct Answer
C. Golgi ApparatusExplanation
The correct answer is Golgi Apparatus. The Golgi Apparatus is an organelle that is responsible for modifying, sorting, and packaging proteins and lipids for transport to their final destination. It is composed of a series of flattened sacs called cisternae. In the photograph, the organelle depicted shows a characteristic stacked structure, which is a distinguishing feature of the Golgi Apparatus.Rate this question:
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- 13.
What is the name of the organelle which is shown in the photograph below?
- A.
Ribosomes
- B.
Lysosome
- C.
Mitochondrion
- D.
Glyoxysome
- E.
Leucoplast
Correct Answer
B. LysosomeExplanation
The organelle shown in the photograph is a lysosome. Lysosomes are membrane-bound organelles that contain digestive enzymes. They are responsible for breaking down waste materials, cellular debris, and foreign substances in the cell. Lysosomes play a crucial role in maintaining cellular homeostasis and are involved in various cellular processes such as autophagy, phagocytosis, and apoptosis.Rate this question:
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- 14.
The organelle displayed in the photo-micrograph below is a Smooth Endoplasmic Reticulum.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The organelle displayed in the photo-micrograph is a smooth endoplasmic reticulum. This can be determined based on the appearance of the organelle in the image, which shows a network of tubules without ribosomes attached. The smooth endoplasmic reticulum is involved in various functions, such as lipid metabolism, detoxification, and calcium storage. Therefore, the correct answer is true.Rate this question:
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- 15.
What is the name of this organelle found in the photograph below identified as number - 8?
- A.
Chromatin
- B.
Rough Endoplasmic Reticulum
- C.
Ribosomes
- D.
Nuclear Pores
Correct Answer
A. ChromatinExplanation
Chromatin is the correct answer because it refers to the material that makes up the chromosomes within the nucleus of a cell. In the photograph, number 8 is labeled as chromatin, indicating that it is the organelle present in the image.Rate this question:
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- 16.
Please identify the cellular structure which is located in the photograph.
Correct Answer
ribosomes, ribosomeExplanation
The cellular structure located in the photograph is ribosomes. Ribosomes are small, spherical organelles found in the cytoplasm of cells. They are responsible for protein synthesis, translating the genetic information from the DNA into functional proteins. Ribosomes can be found either free-floating in the cytoplasm or attached to the endoplasmic reticulum. They are composed of RNA and protein molecules and play a crucial role in the overall functioning of the cell.Rate this question:
- 17.
What is the name of the cellular organelle found in the diagram number 12?
- A.
Golgi Apparatus
- B.
Cell Membrane
- C.
Vesicles
- D.
Capsule
- E.
Tonoplast
Correct Answer
C. VesiclesExplanation
The correct answer is Vesicles. The question asks for the name of the cellular organelle found in the diagram number 12. Among the given options, vesicles are small sacs that are involved in various cellular processes such as transport of molecules within the cell and secretion of substances outside the cell. Therefore, vesicles are the most appropriate organelle that matches the description provided.Rate this question:
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- 18.
What is the name of the cellular organelle number - 3?
- A.
Nuclear Membrane
- B.
Cytoplasm
- C.
Nuclear Pores
- D.
Ribosomes
- E.
Mitochondrion
Correct Answer
C. Nuclear PoresExplanation
Nuclear pores are small channels in the nuclear membrane that allow for the exchange of molecules between the nucleus and the cytoplasm. They play a crucial role in regulating the transport of proteins, RNA, and other molecules in and out of the nucleus. This organelle is distinct from the nuclear membrane, cytoplasm, ribosomes, and mitochondrion, which have their own specific functions within the cell.Rate this question:
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- 19.
Please identify correctly the cellular organelle, number 5?
- A.
Vesicle
- B.
Ribosomes
- C.
Smooth Endoplasmic Reticulum
- D.
Cytosol
- E.
Nucleus
Correct Answer
B. RibosomesExplanation
Ribosomes are the correct answer because they are cellular organelles responsible for protein synthesis. They can be found in both prokaryotic and eukaryotic cells and are composed of RNA and proteins. Ribosomes can be free-floating in the cytosol or attached to the rough endoplasmic reticulum. They play a crucial role in translating genetic information from the nucleus into functional proteins.Rate this question:
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- 20.
Chloroplasts are found in which of the following organisms?
- A.
Animal Cell
- B.
Virus Particles
- C.
Plant Cell
- D.
Fungus
- E.
Virus
Correct Answer
C. Plant CellExplanation
Chloroplasts are found in plant cells. Chloroplasts are organelles that are responsible for photosynthesis, the process by which plants convert sunlight into energy. They contain chlorophyll, a pigment that captures light energy, and other molecules necessary for photosynthesis. Animal cells and fungus do not have chloroplasts, as they do not undergo photosynthesis. Virus particles and viruses are not considered living organisms and therefore do not have cells or organelles.Rate this question:
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- 21.
What is number 6 called___.
- A.
Nucleus
- B.
Nuclear Pore
- C.
Nuclear Ribosome
- D.
Smooth Endoplasmic Reticulum
- E.
Nuclear Membrane
Correct Answer
E. Nuclear MembraneExplanation
The correct answer is Nuclear Membrane. The question is asking for the name of number 6, and out of the given options, the only one that matches is Nuclear Membrane.Rate this question:
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- 22.
What is number 2 called___.
- A.
Nucleus
- B.
Nuclear Pore
- C.
Nuclear Ribosome
- D.
Smooth Endoplasmic Reticulum
- E.
Nuclear Membrane
- F.
Rough Endoplasmic Reticulum
Correct Answer
F. Rough Endoplasmic ReticulumExplanation
The correct answer is Rough Endoplasmic Reticulum. The rough endoplasmic reticulum is a network of membranes within the cell that is studded with ribosomes. It plays a crucial role in the synthesis and transport of proteins in the cell. The ribosomes on the rough endoplasmic reticulum are responsible for protein synthesis, while the network of membranes helps in the proper folding and modification of these proteins before they are transported to their final destination within or outside the cell.Rate this question:
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- 23.
What is the cellular organelle in the image called?
- A.
Cilia
- B.
Mitochdondrion
- C.
Centrosome
- D.
Glyoxysome
- E.
Tonoplast
Correct Answer
B. MitochdondrionExplanation
The correct answer is Mitochondrion. Mitochondria are cellular organelles responsible for generating energy in the form of ATP through cellular respiration. They have a unique structure with an outer membrane and an inner membrane, which contains folds called cristae. Mitochondria are commonly referred to as the "powerhouses" of the cell due to their role in energy production.Rate this question:
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- 24.
What is the name of cellular organelle in the image?
- A.
Cilia
- B.
Cell Wall
- C.
Villi
- D.
Pilus
- E.
Plasma Membrane
Correct Answer
C. VilliExplanation
The correct answer is Villi. Villi are small finger-like projections found in the lining of the small intestine. They increase the surface area of the intestine, allowing for more efficient absorption of nutrients. In the image, the cellular organelle shown resembles the structure of villi, making it the correct answer.Rate this question:
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- 25.
What is the name of the cellular organelle within the plant cell but outside of the nuclear membrane that are colored thread-like structures?
- A.
Cytoplasm
- B.
Nucleoplasm
- C.
Cytoskeleton
- D.
Microvilli
- E.
Contractile Vacuole
Correct Answer
C. CytoskeletonExplanation
The correct answer is Cytoskeleton. The cytoskeleton is a network of protein filaments that provide structural support and shape to the cell. It is located within the plant cell but outside of the nuclear membrane. The cytoskeleton is responsible for various cellular processes, including cell division, cell movement, and maintaining cell shape. It is composed of three main types of filaments: microtubules, microfilaments, and intermediate filaments. The term "colored thread-like structures" refers to the appearance of these filaments under a microscope.Rate this question:
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- 26.
What is the name of the substance within the cellular organelle in the image?
- A.
Endosome
- B.
Lipids
- C.
Chlorophyll
- D.
Xanthophyll
- E.
Starch
Correct Answer
C. ChlorophyllExplanation
The substance within the cellular organelle in the image is chlorophyll. Chlorophyll is a pigment found in plants and algae that is responsible for the absorption of light during photosynthesis. It gives plants their green color and plays a crucial role in converting light energy into chemical energy.Rate this question:
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- 27.
What is the function of the cellular organelle in the image?
- A.
Produces Adenosine Triphosphate (ATP)
- B.
Site of photosynthesis
- C.
Breaksdown materials
- D.
Produces vesicles
- E.
Produces vesicles
Correct Answer
C. Breaksdown materialsExplanation
The cellular organelle in the image is responsible for breaking down materials. This process is essential for the cell to remove waste products, recycle molecules, and obtain energy. By breaking down materials, the organelle helps maintain the overall functioning and homeostasis of the cell.Rate this question:
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- 28.
What type of cell would you locate these structures?
- A.
Animal cells
- B.
Bacteria cells
- C.
Fungus cells
- D.
Plant cells
- E.
Virus Particles
Correct Answer
B. Bacteria cellsExplanation
Bacteria cells would be the type of cell where these structures would be located.Rate this question:
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- 29.
Letter F is a golgi apparatus.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement is true because the Golgi apparatus is an organelle found in eukaryotic cells, responsible for modifying, sorting, and packaging proteins and lipids for transport to their final destinations. It consists of a series of flattened membrane-bound sacs called cisternae. The Golgi apparatus is involved in the processing and packaging of proteins and lipids, as well as the formation of lysosomes. Therefore, it is correct to say that letter F represents the Golgi apparatus.Rate this question:
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- 30.
What is the name of the organelle (white color) found in prokaryotic cells?
- A.
Cilia
- B.
Fluid Mosaic Model
- C.
Cytoplasm
- D.
Nucleoid
- E.
Rough E.R.
Correct Answer
D. NucleoidExplanation
The correct answer is nucleoid because it is the name of the organelle found in prokaryotic cells. The nucleoid is a region within the prokaryotic cell where the genetic material, usually in the form of a single circular DNA molecule, is located. It is not surrounded by a membrane like the nucleus in eukaryotic cells. The nucleoid plays a crucial role in controlling the cell's functions and reproduction.Rate this question:
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