Biology Quiz: Basic Questions Of Histology Part- III
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Which intercellular junction is located on the basal membrane?
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Tight junctions
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Zonula adherens
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Macula adherens
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Gap junctions
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About This Quiz
Welcome to part III of " Biology Quiz: Basic Questions Of Histology." This quiz has eighteen questions on microanatomy with multiple-choice options. Read and understand each question carefully, and choose the right answer. All the best!
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- 2.
Which intercellular junction is located on the apical side?
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Tight junctions
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Zonula adherens
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Macula adherens
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Gap junctions
Correct Answer
A. Tight junctionsExplanation
Tight junctions are intercellular junctions that are located on the apical side. These junctions form a barrier between cells, preventing the leakage of molecules and ions between them. They play a crucial role in maintaining the integrity and polarity of epithelial tissues. Zonula adherens, macula adherens, and gap junctions are also intercellular junctions, but they are not specifically located on the apical side.Rate this question:
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- 3.
Which intercellular junction has actin filaments?
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Tight junctions
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Zonula adherent
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Macula adherens
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Gap junctions
Correct Answer
A. Zonula adherentExplanation
Zonula adherens is an intercellular junction that contains actin filaments. It is a belt-like structure that encircles the cell, connecting adjacent cells together. Actin filaments provide structural support and help in maintaining the integrity of the junction. This junction also plays a role in cell signaling and communication between neighboring cells. Tight junctions, on the other hand, do not contain actin filaments but are responsible for sealing the space between cells to prevent the leakage of molecules. Macula adherens is another type of intercellular junction that uses intermediate filaments for cell adhesion. Gap junctions facilitate direct communication between cells through the exchange of small molecules.Rate this question:
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- 4.
Which intercellular junction has a transmembrane protein, electron dense plaque, and filaments?
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Tight junctions
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Zonula adherens
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Macula adherens
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Gap junctions
Correct Answer
A. Macula adherensExplanation
Macula adherens, also known as desmosomes, are intercellular junctions that contain transmembrane proteins, electron dense plaques, and filaments. These junctions provide strong adhesion between cells, allowing them to withstand mechanical stress. The transmembrane proteins in macula adherens form connections with the filaments, which are anchored to the electron dense plaques. This structure helps to maintain the integrity and stability of tissues.Rate this question:
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- 5.
Which intercellular junction has interlocking transmembrane proteins and can be found in cardiac muscle?
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Tight junctions
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Zonula adherens
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Macula adherens
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Gap junctions
Correct Answer
A. Gap junctionsExplanation
Gap junctions are intercellular junctions that have interlocking transmembrane proteins and can be found in cardiac muscle. These junctions allow for direct communication and exchange of ions, small molecules, and electrical signals between adjacent cells. They play a crucial role in coordinating the contraction of cardiac muscle cells, allowing them to work together as a synchronized unit. Tight junctions, zonula adherens, and macula adherens are other types of intercellular junctions, but they do not have the same interlocking transmembrane proteins as gap junctions and do not play the same role in cardiac muscle.Rate this question:
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- 6.
Which of the following is not composed of microtubules?
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Centriole
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Microvilli
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Flagellum
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Cilia
Correct Answer
A. MicrovilliExplanation
Microvilli are not composed of microtubules. Microvilli are small, finger-like projections found on the surface of certain cells, particularly in the lining of the small intestine. They are primarily made up of actin filaments, which provide structural support and aid in absorption and secretion functions. Microtubules, on the other hand, are hollow tubular structures made up of proteins called tubulins and are involved in various cellular processes such as cell division, intracellular transport, and maintaining cell shape. Therefore, microvilli do not contain microtubules, making them the correct answer.Rate this question:
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- 7.
Which of the following is true about microvilli?
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They are long and rigid
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Found in areas with no movement
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Found in areas of absorption
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Made of microtubules
Correct Answer
A. Found in areas of absorptionExplanation
Microvilli are small, finger-like projections found on the surface of certain cells, particularly in areas of absorption. They increase the surface area of the cell, allowing for more efficient absorption of nutrients and other substances. Microvilli are not long and rigid, but rather flexible and short. They are not found in areas with no movement, but rather in areas where absorption is necessary, such as the small intestine. While microvilli are composed of actin filaments, not microtubules, they play an important role in absorption processes.Rate this question:
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- 8.
Stereocilia is also known as a brush border
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True
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False
Correct Answer
A. FalseExplanation
Stereocilia are not known as a brush border. Stereocilia are small hair-like structures found on the surface of certain cells in the body, such as in the inner ear. They are involved in detecting sound and are not related to the brush border, which refers to microvilli found on the surface of certain cells in the intestines and kidneys. Therefore, the statement is false.Rate this question:
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- 9.
Basement membrane has what 3 layers?
Correct Answer
lamina lucida, lamina densa, and reticular laminaExplanation
The basement membrane is composed of three layers: the lamina lucida, the lamina densa, and the reticular lamina. The lamina lucida is the innermost layer, located adjacent to the epithelial cells. It is composed of proteins and glycoproteins that provide a smooth surface for cell adhesion. The lamina densa is the middle layer and is made up of collagen fibers that provide strength and stability to the basement membrane. The reticular lamina is the outermost layer and consists of reticular fibers and ground substance that support and anchor the basement membrane to the underlying connective tissue.Rate this question:
- 10.
The basal lamina is composed of two layers
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True
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False
Correct Answer
A. TrueExplanation
The basal lamina is indeed composed of two layers. It consists of the lamina lucida, which is the upper layer closer to the epithelial cells, and the lamina densa, which is the lower layer closer to the underlying connective tissue. These two layers work together to provide support and anchorage for the epithelial cells, as well as contribute to the filtration and diffusion functions of certain tissues.Rate this question:
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- 11.
Which of the following layers do capillaries have?
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Lamina lucida
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Lamina densa
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Reticular layer
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Option 4
Correct Answer(s)
A. Lamina lucida
A. Lamina densaExplanation
Basal lamina = lamina lucida + lamina densaRate this question:
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- 12.
Epithelium can be found in
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Lining of blood vessels
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Kidneys
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Respiratory tract
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A, b, and c
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None of the above
Correct Answer
A. A, b, and cExplanation
Epithelium can be found in the lining of blood vessels, kidneys, and the respiratory tract. Epithelium is a type of tissue that covers the surfaces of organs and structures in the body. It acts as a protective barrier and helps in absorption, secretion, and filtration processes. The lining of blood vessels, kidneys, and respiratory tract all require epithelial tissue to perform their respective functions. Therefore, the correct answer is a, b, and c.Rate this question:
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- 13.
Which intercellular junction has intermediate filaments that are attached to an electron dense plaque that forms a hairpin loop?
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Tight junctions
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Zonula adherens
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Macula adherens (desmosome)
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Gap junction
Correct Answer
A. Macula adherens (desmosome)Explanation
Macula adherens, also known as desmosomes, are intercellular junctions that connect adjacent cells. They are characterized by intermediate filaments that are attached to an electron dense plaque, forming a hairpin loop. This structure provides strong adhesion between cells, allowing them to withstand mechanical stress and maintain tissue integrity. Tight junctions, zonula adherens, and gap junctions do not have the same hairpin loop structure and attachment to intermediate filaments, making them incorrect choices for this question.Rate this question:
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- 14.
Which intercellular junction permits the direct passage of inorganic ions and other water soluble molecules from cell to cell?
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Tight junction
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Zonula adherens
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Macula adherens
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Gap junction
Correct Answer
A. Gap junctionExplanation
Gap junctions permit the direct passage of inorganic ions and other water-soluble molecules from cell to cell. These junctions are formed by connexons, which are protein channels that connect the cytoplasm of adjacent cells. Through these channels, small molecules and ions can freely diffuse between cells, allowing for rapid communication and coordination between cells. Tight junctions, zonula adherens, and macula adherens are other types of intercellular junctions, but they do not allow for the direct passage of molecules between cells.Rate this question:
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- 15.
A single long microvilli is referred to as a flagellum
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True
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False
Correct Answer
A. FalseExplanation
A single long cilium is reffered to as a flagellum, e.g., spermatozoon.Rate this question:
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- 16.
Simple squamous epithelium can be found in
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Blood vessels
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Intestine
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Gall bladder
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Kidney
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Thyroid gland
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Pleural and peritoneal cavities
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Pulmonary alveoli
Correct Answer(s)
A. Blood vessels
A. Kidney
A. Pleural and peritoneal cavities
A. Pulmonary alveoliExplanation
Simple squamous epithelium is a thin, single layer of flat cells that allows for easy diffusion of substances. It is found in areas where diffusion and filtration are important functions. In blood vessels, it lines the inner walls, allowing for the exchange of oxygen and nutrients with surrounding tissues. In the kidney, it forms the glomerular capsule, where filtration of blood occurs. In the pleural and peritoneal cavities, it lines the walls, reducing friction during movement. In pulmonary alveoli, it makes up the thin walls, facilitating the exchange of gases during respiration.Rate this question:
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- 17.
Simple cuboidal epithelium can be found
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Blood vessels
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Thyroid gland
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Stomach
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Collecting ducts of kidney
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Gallbladder
Correct Answer(s)
A. Thyroid gland
A. Collecting ducts of kidneyExplanation
Simple cuboidal epithelium can be found in the thyroid gland and collecting ducts of the kidney. In the thyroid gland, this type of epithelium forms the lining of the follicles, which are responsible for producing and storing thyroid hormones. In the collecting ducts of the kidney, simple cuboidal epithelium lines the tubules that are involved in the reabsorption and concentration of urine. This type of epithelium is well-suited for secretion and absorption due to its single layer of cube-shaped cells. It provides a protective barrier and allows for efficient exchange of substances in these specific organs.Rate this question:
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- 18.
Simple columnar epithelium can be found in
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Blood vessels
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Glomerular capsule
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Stomach
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Gall bladder
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Intestine
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Thyroid gland
Correct Answer(s)
A. Stomach
A. Gall bladder
A. IntestineExplanation
Simple columnar epithelium is a type of tissue that consists of a single layer of tall, elongated cells. It is specialized for absorption and secretion. The stomach, gall bladder, and intestine are all organs involved in digestion and nutrient absorption. Therefore, it is logical to find simple columnar epithelium in these organs. The tall cells allow for increased surface area, which enhances the absorption of nutrients from the digested food. The thyroid gland, blood vessels, and glomerular capsule do not have a direct role in digestion and nutrient absorption, so it is less likely to find simple columnar epithelium in these structures.Rate this question:
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Mar 21, 2023Quiz Edited by
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Jan 20, 2021Quiz Created by
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