Which connection attaches cells together but prevents diffusion between them? A: Tight junctions B: Gap junctions C: Desmosome D: Hemidesmosome E: Aquapore
Answere : The correct answere is "tight junction".
Explaination : Tight junction connection attaches cells together but prevents diffusion between them. It consist of weblike strands of transmembrane proteins that fuse together the outer surfaces of adjacent plasma membranes to seal off passageways between adjacent cells.Tight juction found in cells of epithelial tissue that lines the stomach, intestine and urinary bladder.
Which connection attaches cells together but prevents diffusion between them? A: Tight junctions B: Gap 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
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...
Tight junctions are particularly important in epitheliale the lining of the small intestine Why? A Without light junctions, it would not be possible for coils to communicate quickly with adjacent cells by sending small molecules through these connections in the cytoplasm B Without tight junctions, bulk transport of oxygen would not be possible C 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...
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)...
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
1- Proteoglycans are different from peptidoglycans and glycoproteins in that proteoglycans: a. are primarily chains of polysaccharides, with each polysaccharide covalently linked to one core protein b. are primarily chains of polysaccharides that are covalently linked to each other through a few amino acids c. are primarily proteins that are modified with a few polysaccharides d. are primarily proteins that are modified with one polysaccharide 2- Which of the following statements about tight junctions is FALSE? a. Tight junctions are...
Which of the following statements is correct? A. The speed of synaptic transmission at gap junctions is faster than at chemical synapses B. At a chemical synapse in the brain, an action potential in the presynaptic neuron always leads to an EPSP in the postsynaptic neuron. C. At gap junctions, current flow is always in one direction. D. Chemical synapses permit direct flow of current between two neurons.
Question 26: The principal microtubule-organizing center in animal cells is the ____________. A. centromere. B. cell cortex. C. centrosome. D. Z-Disc Question 27: Catenin proteins: A. binds to desmosomes of epithelial cells. B. support epithelial cells to the basal lamina C. allow ions and small molecules to pass from one cell to another. D. link cadherin to the actin cytoskeleton. Question 28: Meiosis produces: A. four cells that are genetically identical and contain half as many chromosomes as the original...
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...
which of the following describes a major function of the extracellular matrix? a. act as a signal reservoir for small signaling molecules b. provide biomechanical force c. all of the answers describe the function of extracellular matrix d. anchor cells to a basement membrane or other cells e. control cell migration you have identified a new cell type that forms sheets within the gut tissue.you are trying to determine the extent of communication between the cell you inject singles cell...