answer all the questions please 5) What type of protein fiber, commonly found in

Question

answer all the questions please

5) What type of protein fiber, commonly found in the extracellular matrix, is extensible? A) collagen B) keratin C) clastic D) reticflar Answer: Bloom's Taxonomy: 1) Knowledge Learning Outcome: 4.1.4 6) Protein channels that are situated between cells create small pores for the passage of small substances are known as: A) tight junctions. B) desmosomes D) occluding j enwcrions Bloom's Taxonomy: 1) Knowledge Learning Outcome: 4.1.5 7) What type of cell junction would most likely prevent water from flowing between our cells? A) glycoproteins B) tight junctions Neryous Suse)m C) desmosomes D) gap junctions Answer Bloom's Taxonomy: 2) Comprchension Learning Outcome: 4.1.5 8) Cells in the epidermis of the skin need to be held tightly together so that an impermeable barrier to fluids is created. What type of junction performs this function? A) desmosome B) gap junction C) tight junction D) intercalated disc Answer: Bloom's Taxonomy: 2) Comprehension Learning Outcome: 4.1.5 9) The free surface of an epithelial tissue is the: A) basal lamina. B) apical surface. C) basement membrane. detint D) reticular lamina. Answer Bloom's Taxonomy: 1) Knowledge Learning Outcomex 4,2.1 Copyright © 2016 Pearson Education, Inc.

Explanation / Answer

The correct answers are as follows:

Question no 5: (a) Collagen [Collagen is the most abundant fibrous protein of the ECM]

Question no 6: (c) Gap junctions [A gap junction or macula communicans is a specialized intercellular connection between various types of animal cell-types directly connecting the cytoplasm of two cells, which permits various molecules, ions and electrical impulses to directly move through a regulated gate in between cells.]

Question no 7: (b) Tight junctions [ Epithelia are categorized as "tight" or "leaky", based on the ability of the tight junctions to prevent water and solute movement and skin epithelia is mostly populated by impermeable tight junctions]

Question no 8: (c) Tight junctions [same as 7]

Question no 9: (b) Apical surface [The outer surface of the epithelia is called apical surface]

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