Cell junctions which bind cells together at apical membranes are: a. gap junctions b. tight junctions...
Cell junctions which bind cells together at apical membranes are:
| a. |
gap junctions |
|
| b. |
tight junctions |
|
| c. |
all are correct |
|
| d. |
desmosomes |
|
| e. |
peroxisomes |
Homework Answers
b. tight junctions
Epithelial cells of animals are connected together by various cell junctions such as tight junctions, adhering junctions and gap junctions. Gap junctions allow the passage of ions and some specific molecules across one cell to another, thus they provide cell-to-cell communication.
Tight Junctions are a type ofcell junctions that connect adjacent cells together. These junctions are found in the apical region around the cell's circumference.
Desmosomes: connect the plasma membrane to intermediate filaments in the cytoplasm.
Peroxisomes: not cell juctions.
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Cell junctions which bind cells together at apical membranes
are:
a.
gap junctions
b.
tight junctions...
55. Which cell junctions are most important for creating a "seal" or barrier in an epithelial...
55. Which cell junctions are most important for creating a "seal" or barrier in an epithelial layer? A. Adherens junctions B. Desmosomes C. Gap junctions D. Hemidesmosome E. Tight junctions
Compare the following cell junctions: Tight Junctions, Gap Junctions.
Compare the following cell junctions: Tight Junctions, Gap Junctions.
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Question 44 (1 point) When two cells are joined by proteins that bind to each other,...
Question 44 (1 point) When two cells are joined by proteins that bind to each other, and to the proteins that anchor cytoskeletal intermediate filaments, are formed. o tight junctions desmosomes plasmodesmata gap junctions
What component of the cytoskeleton is associated with tight junctions? intermediate filaments O microfilaments microtubules Question...
What component of the cytoskeleton is associated with tight junctions? intermediate filaments O microfilaments microtubules Question 3 2 pts Epiethelial cells have which of the following on their basal surfaces? O adherens junctions hemidesmosomes O tight junctions O gap junctions desmosomes
6. Application: Let's say you injected a dye into a cell. Describe what would happen to...
6. Application: Let's say you injected a dye into a cell. Describe what would happen to the dye if the cells in animal tissue were connected by each of the following: tight junctions, desmosomes, and gap junctions d. Application: Let's say you inject a dye extracellularly on one side of a sheet of animal cells. Describe what would happen to the dye if the cells in the tissue were connected by each of the following: tight junctions, desmosomes, gap junctions
2) Think about what tight junctions look like and contrast that with what desmosomes look like....
2) Think about what tight junctions look like and contrast that with what desmosomes look like. Based on these differences, which type of connection do you think would be better suited to holding together the cells in kidney tissue (i.e. tissue that is leak-proof). Explain your answer. (a) Which type of connection would be better suited to holding together the cells of muscle tissue (i.e. tissue that needs to be able to withstand repeated mechanical stresses). Explain your answer (b)...
1) Each of the following is a type of tissue except a. epithelial b. connective C)...
1) Each of the following is a type of tissue except a. epithelial b. connective C) serous d. muscle 2) The organizational scheme is a. tissues membranes organs organ systems b. cells tissues organ systems organs C. cells tissues membranes organ systems d. cells tissues organsorgan systems 3) Tissues are a groups of cells working together b. groups of cells with similar structures C. groups of cells adhering to each other d.) all of the above 4) Fibroblasts are found...
icrovilli, stereocilia b. False 41. The structural surface modifications of the apical part of a cell...
icrovilli, stereocilia b. False 41. The structural surface modifications of the apical part of a cell include the following: m (stereovilli) and cilia. a. True 42. are unusually long, immotile microvilli a. Microvilli b. Stereocilia c. Cilia d. a, b, c e. None of the above. 43. Cilia are common surface modifications present on nearly every cell in the body. a. True b. False 44. Concerning apical domain modifications, motile cilia have a core of microtubules arranged in apattern. a....
Tight junctions are particularly important in epithelia like the lining of the small intestine. Why? A....
Tight junctions are particularly important in epithelia like the lining of the small intestine. Why? A. Without tight junctions, it would not be possible to maintain the gradient for nutrients like glucose and amino acids that allow them to be absorbed into the circulatory system. B. Without tight junctions, bulk transport of oxygen would not be possible. C. Without tight junctions, the cells would not adhere to one another and the sheets of cells would come apart. D. Without tight...
55. Which cell junctions are most important for creating a "seal" or barrier in an epithelial layer? A. Adherens junctions B. Desmosomes C. Gap junctions D. Hemidesmosome E. Tight junctions
Question 44 (1 point) When two cells are joined by proteins that bind to each other, and to the proteins that anchor cytoskeletal intermediate filaments, are formed. o tight junctions desmosomes plasmodesmata gap junctions
What component of the cytoskeleton is associated with tight junctions? intermediate filaments O microfilaments microtubules Question 3 2 pts Epiethelial cells have which of the following on their basal surfaces? O adherens junctions hemidesmosomes O tight junctions O gap junctions desmosomes
6. Application: Let's say you injected a dye into a cell. Describe what would happen to the dye if the cells in animal tissue were connected by each of the following: tight junctions, desmosomes, and gap junctions d. Application: Let's say you inject a dye extracellularly on one side of a sheet of animal cells. Describe what would happen to the dye if the cells in the tissue were connected by each of the following: tight junctions, desmosomes, gap junctions
2) Think about what tight junctions look like and contrast that with what desmosomes look like. Based on these differences, which type of connection do you think would be better suited to holding together the cells in kidney tissue (i.e. tissue that is leak-proof). Explain your answer. (a) Which type of connection would be better suited to holding together the cells of muscle tissue (i.e. tissue that needs to be able to withstand repeated mechanical stresses). Explain your answer (b)...
1) Each of the following is a type of tissue except a. epithelial b. connective C) serous d. muscle 2) The organizational scheme is a. tissues membranes organs organ systems b. cells tissues organ systems organs C. cells tissues membranes organ systems d. cells tissues organsorgan systems 3) Tissues are a groups of cells working together b. groups of cells with similar structures C. groups of cells adhering to each other d.) all of the above 4) Fibroblasts are found...
icrovilli, stereocilia b. False 41. The structural surface modifications of the apical part of a cell include the following: m (stereovilli) and cilia. a. True 42. are unusually long, immotile microvilli a. Microvilli b. Stereocilia c. Cilia d. a, b, c e. None of the above. 43. Cilia are common surface modifications present on nearly every cell in the body. a. True b. False 44. Concerning apical domain modifications, motile cilia have a core of microtubules arranged in apattern. a....
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