1. Which of the following is false about apical cell surface specialization? A. Sterocilia increase the cells' surface area. C. Citianem consist of 9+2 microfilaments assembly. C. Clia are larger than microvilli D. Microvilli are referred to as brush border and striated border in small intestine and kidney respectively. E. Sterocilia have a motion-detecting function. 2. Which of the following is not a purpose of fixation? A.Terminate cell metabolism. B. Enabling lysosomes to discharge their contents. C. Harden the tissue as a result of either cross-linking or denaturing protein molecules. D. Kill pathogenic microorganisms. E. Prevent enzymatic degradation of cells and tissues by self- digestion 3. Which of the following is false about acidic and basic dyes? A. Acidic dyes react with anionic groups in cell and tissues. B. Mitochondria and extracellular fibers are acidophiliC. C. Heterochromatin and matrix of cartilage are D. Basic dyes carries a net positive charge on its, colored portion. E. Pyronin G is a basic dye and stains red. 4. Which of the following is true about organelles? A. rER is responsible for steroid synthesis. B. Golgi contains about 40 different hydrolytic enzymes. C. Microtubules are the thinnest cytoskeletal elements. D. Nucleolus is the site of rRNA synthesis and ribosomal subunit assembly. E. Mitochondria have a folded single membrane. 5. __ contain desmocollins and desmogleins. A. Zonula occludens B. Macula adherens C. Gap junction D. Zonula adherens E. Focal adhesions 6.Which of the following is not a function of epithelial tissue? A. Covering B. Lining

Question

1. Which of the following is false about apical cell surface specialization? A. Sterocilia increase the cells' surface area. C. Citianem consist of 9+2 microfilaments assembly. C. Clia are larger than microvilli D. Microvilli are referred to as brush border and striated border in small intestine and kidney respectively. E. Sterocilia have a motion-detecting function. 2. Which of the following is not a purpose of fixation? A.Terminate cell metabolism. B. Enabling lysosomes to discharge their contents. C. Harden the tissue as a result of either cross-linking or denaturing protein molecules. D. Kill pathogenic microorganisms. E. Prevent enzymatic degradation of cells and tissues by self- digestion 3. Which of the following is false about acidic and basic dyes? A. Acidic dyes react with anionic groups in cell and tissues. B. Mitochondria and extracellular fibers are acidophiliC. C. Heterochromatin and matrix of cartilage are D. Basic dyes carries a net positive charge on its, colored portion. E. Pyronin G is a basic dye and stains red. 4. Which of the following is true about organelles? A. rER is responsible for steroid synthesis. B. Golgi contains about 40 different hydrolytic enzymes. C. Microtubules are the thinnest cytoskeletal elements. D. Nucleolus is the site of rRNA synthesis and ribosomal subunit assembly. E. Mitochondria have a folded single membrane. 5. __ contain desmocollins and desmogleins. A. Zonula occludens B. Macula adherens C. Gap junction D. Zonula adherens E. Focal adhesions 6.Which of the following is not a function of epithelial tissue? A. Covering B. Lining

Answer 1

1. **Answer: B. Axonem consist of

microfilaments assembly.** - Explanation: The axoneme of cilia and flagella consists of a

arrangement of microtubules, not microfilaments.2. **Answer: B. Enabling lysosomes to discharge their contents.** - Explanation: Fixation does not enable lysosomes to discharge their contents. Fixation is a process used to preserve tissues and cells by stopping cell metabolism and preventing enzymatic degradation.3. **Answer: B. Mitochondria and extracellular fibers are acidophilic.** - Explanation: Mitochondria and extracellular fibers are not acidophilic. Acidophilic structures are typically stained by acidic dyes.4. **Answer: D. Nucleolus is the site of rRNA synthesis and ribosomal subunit assembly.** - Explanation: The nucleolus is indeed the site of rRNA synthesis and ribosomal subunit assembly, making this statement true.5. **Answer: B. Macula adherens** - Explanation: Macula adherens, also known as desmosomes, contain desmocollins and desmogleins, which are proteins that mediate cell-cell adhesion.6. **Answer: C. Gap junction** - Explanation: Gap junctions are specialized intercellular connections that allow for the passage of ions and small molecules between cells, but they are not a function of epithelial tissue. Epithelial tissue functions include covering and lining.

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