1. Which of the following is false about apical cell surface specialization? A. Sterocilia increase the cells' surface area. B. Axonem consist of 9+2 microfilaments assembly. C. Cilia 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 basophiliC. D. Basic dyes carries a net positive charge on its colored portion. E. Pyronin G is a basic dye and stains red. A. 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, C. Micronibule the site of rRNA synthesis and ribosomal subunit assembly. E. Mitochondria have a folded single membrane.