Animal cells adhere together strongly through ., which are supported by intermediate filaments O a. cellulose fibers b. desmosomes c. plasmodesmata d. tight junctions O e. gap junctions
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- The gap junctions of animal cells differ from the plasmodesmata ofplant cells in thata. gap junctions serve as communicating junctions and plasmodesmataserve as anchoring junctions.b. gap junctions prevent extracellular material from moving betweenadjacent cells but plasmodesmata do not.c. gap junctions allow for direct exchange of cellular material betweencells but plasmodesmata cannot allow the same type of exchange.d. gap junctions are formed by specialized proteins that form channelsthrough the membranes of adjacent cells but plasmodesmata areformed by connecting the plasma membranes of adjacent cells.e. All of the above are correct.Which cell junctions form junctions between cells connected to the cytoskeleton? a. tight junctionsb. hemidesmosomesc. desmosomesd. focal adhesionse. gap junctionsDiseased animal cells may produce molecules thatactivate death cascades to kill the cells in a controlledmanner. Why would neighboring healthy cells also die?a. The death molecule is passed throughdesmosomes.b. The death molecule is passed throughplasmodesmata.c. The death molecule disrupts the extracellularmatrix.d. The death molecule passes through gap junctions.
- Cilia and fl agella are involved ina. forming junctions between cells.b. establishing the extracellular matrix.c. cell-to-cell communication.d. cell movement.Match each term to the phrase that describes it best. Cell fiber that can be found in muscle cells a. Primary cilium e. vLargest of the cell fibers; act like "engines" for the cell b. Microfilaments C. Gap junctions d. Centrosomes e. Microtubules f. Cilia g. Intermediate filaments h. Microvilli i. Flagella j. Desmosomes k. Centrioles 1. Tight junctionsThe tigroid lysis is observed in a case of functional exhaustion of the neuron. It is resulted in decay of basophilic substance and brightening of the neuroplasma. What organelles changes do this phenomenon is associated with? a. Granular endoplasmic reticulum O b. Lysosomes O c. Neurofibrils d. Golgi apparatus O e. Mitochondria
- Dendritic spines have an _______ cytoskeleton an average number of ________ per neuron. microtubule, 1-11 actin, 20 actin, 200,000 intermediate filament, 500,000Which of the following do not play a role in intracellularmovement?a. microfilaments and intermediate filamentsb. microfilaments and microtubulesc. intermediate filaments and microtubulesd. only intermediate filamentsActin is found in Microtubules are found in Select one: a. microvilli and flagella, lamellipodium and cilia Ob. flagella and lamellipodium, flagella and desmosomes c. mitotic spindles and microvilli, flagella and cilia d. microvilli and lamellipodium, flagella and cilia e. flagella and cilia, microvilli and lamellípodium ycle HW due Jump to. O Next page cancer stem cells
- FLORE A endocytosis -Secretory vesicles What process is depicted in the basal layer of the glandular epithelium shown in B? O cell fragmentation cell division exocytosis B -Secretory cell fragmentsTay-Sachs disease is a genetic disorder that results in thedestruction of neurons due to a buildup of sphingolipidsin the cells. Which organelle is malfunctioning in TaySachs?a. lysosomeb. endoplasmic reticulumc. peroxisomed. mitochondriaYou are watching cells in a dish spontaneously contract. They are all contracting atdifferent rates; some fast, some slow. After a while, several cells link up and theybegin contracting in synchrony. Discuss what is going on and what type of cells youare looking at.