This organelle allows molecules to enter and leave the cell. Also, supports and protects the cell O cytoskeleton cell membrane spindle fibers cell wall
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A: Answer is given below
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A: cell is a structural and functional unit of life
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- Organelles and Cystic Fibrosis A plasma membrane transport protein called CFTR moves chloride ions out of cells lining cavities and ducts of the lungs, liver, pancreas, intestines, and reproductive system. Water that follows the ions creates a thin film that allows mucus to slide easily through these structures. People with cystic fibrosis (CF) have too few copies of the CFTR protein in the plasma membranes of their cells. Not enough chloride ions leave the cells, and so not enough water leaves them either. The result is thick, dry mucus that clogs the airways to the lungs and other passages. Symptoms include difficulty breathing and chronic lung infections. In 2000, researchers tracked the cellular location of the CFTR protein as it was being produced in cells from people with CF (Figure 3.13). Figure 3.13 Cellular location of the CFTR protein. Graph compares the amounts of CFTR protein found in endoplasmic reticulum, vesicles traveling from ER to Golgi, and Golgi bodies in CF cells and normal cells. In which organelle is the amount of CFTR protein most similar in both types of cells?Organelles and Cystic Fibrosis A plasma membrane transport protein called CFTR moves chloride ions out of cells lining cavities and ducts of the lungs, liver, pancreas, intestines, and reproductive system. Water that follows the ions creates a thin film that allows mucus to slide easily through these structures. People with cystic fibrosis (CF) have too few copies of the CFTR protein in the plasma membranes of their cells. Not enough chloride ions leave the cells, and so not enough water leaves them either. The result is thick, dry mucus that clogs the airways to the lungs and other passages. Symptoms include difficulty breathing and chronic lung infections. In 2000, researchers tracked the cellular location of the CFTR protein as it was being produced in cells from people with CF (Figure 3.13). Figure 3.13 Cellular location of the CFTR protein. Graph compares the amounts of CFTR protein found in endoplasmic reticulum, vesicles travel in g from ER to Golgi, and Golgi bodies in CF cells and normal cells. Which organelle contains the least amount of CFTR protein in normal cells? In CF cells?The plasma membrane __________. a. surrounds the cytoplasm b. separates the nucleus from the cytoplasm c. separates the cell interior from the environment d. both a and c
- In the fluid mosaic model: plasma membrane proteins orient their hydrophilic sides toward the internal bilayer. phospholipids often flip-flop between the inner and outer layers. the mosaic refers to proteins attached to the underlying cytoskeleton. the fluid refers to the phospholipid bilayer. the mosaic refers to the symmetry of the internal membrane proteins and sterols.Cytoskeleton is important for the proper function of cell and one of its components is : microtubles plastids ribosomes cytoplasm chromosomesWhich of the following is NOT a component of the cytoskeleton? Microtubules intermediate filaments Microfilaments Primary filaments
- Cytoplasm. Golgi Bodies Vacuoles Centrioles Nucleus Chioroplasts Primary Cell Wal Vacuole Nucleolus Secondary Cell Wall Cell Membrane Mitochondria Animal Cell Plant CellCytoskeleton is important for the proper function of the cell and One :of its components is Microtubules Plastids O Ribosomes Cytoplasm O Chromosomes OWhat is NOT an example of microfilament-based structures in a cell? Stress fibres Filopodia Cilia O Lamellipodium at the leading edge O Microvilli
- Certain cells in your pancreas make digestive enzymes that are secreted into ducts and carried to your small intestine. If you looked at these pancreatic cells with electron microscopy, you would expect to see numerous cilia on the cell surfaces. multiple nuclei per cell. large amounts of rough ER. few ribosomes but numerous vacuoles. large numbers of primary lysosomes.Which of the following is not a cellular activity associated with microtubules? maintenance of axons mititotic spindle cilial structure cell shape orientation of cellulose microfibrils All of the following are roles of microfilaments except cell migration. muscle cell contraction. mitotic spindle formation. cytoplasmic streaming. amoeboid movement.Plasmodesmata in plant cells are most similar in function to which of the following structures in animal cells? Extracellular mix Peroxisomes Desmosomes Tight junctions Gap junctions
