helif Online: Laboratory x //books/9781119320395/cf/6/20 4/30/2/200:0 A. Cellula
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helif Online: Laboratory x //books/9781119320395/cf/6/20 4/30/2/200:0 A. Cellular Organelles and Their Function Write the letter for the correct answer in the blank 1. A cell makes and secretes a protein-based hormone. This particular cell would have a great amount of RER and: (a) SER (b) Golgi complex (c) mitochondria (d) lysosomes Testes and ovaries that make steroids (lipids) would have a larger amount of: (a) SER (b) RER (c) mitochondria (d) lysosomes 2. 3. Muscle cells that need large amounts of ATP would have many: (a) Golgi complexes (b) ribosomes (c) SER (d) mitochondria Cells that line the small intestine are specialized for absorption and secretion. The plasma membrane structure they have to accomplish this is: (a) centrioles (b) cilia (c) flagella (d) microvilli 4.Explanation / Answer
1. Golgi complex [ because vesicle containing protein from rough endoplasmic reticulum moves to the Golgi complex --> then those protein containing buds from RER fuse with Golgi complex --> inside Golgi complex protein monomers are fused to form the full hormone--> then released as secretory vesicles to blood, while lysosome are enzyme-filled granules, not hormone filled, great numbers of mitochondria found in liver cells and muscle cell].
2.a) SER [The smooth ER plays the main role in the synthesis, storage, and secretion of lipids, fats, and lipoproteins ].
3. d.) Mitochondria [ muscle cells need a lot of energy, as ATP is the powerhouse of the cell, muscle cells have a lot of mitochondria to supply energy]
4. d) Microvilli [ by forming microvilli the surface area of the intestinal membrane increases many folds--> the more surface area the more effective absorption. This is because more surface area allows more diffusion surface for absorption of nutrients ]
5. c) Lysosomes [ lysosomes contain bacteria-killing enzymes which create pores in the bacterial cell walls, thus destroy bacteria ]
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