SOLVED

41) Each of the following is a function of smooth endoplasmic reticulum, except A) storage and release of calcium ions. B) modification of protein. C) synthesis of steroid hormones. D) synthesis of triglycerides. E) detoxification of drugs. 42) The following is a list of the steps involved in the process of secretion by the Golgi apparatus. 1. Material moves from cisterna to cisterna by means of transfer vesicles. 2. Exocytosis. 3. Products from RER are packaged into transport vesicles. 4. Secretory vesicles are formed at the maturing face. 5. Vesicles arrive at the forming face. 6. Enzymes modify arriving proteins and glycoproteins. A) 5, 6, 1, 4, 2, 3. B) 2, 3, 5, 6, 1, 4. C) 4, 3, 1, 6, 5, 2. D) 3, 5, 6, 1, 4, 2. E) 1, 3, 6, 4, 2, 5. 43) Examination of a sample of glandular cells reveals an extensive network of smooth endoplasmic reticulum. Which of the following is the likeliest product of these cells? A) digestive enzymes B) steroid hormones C) protein hormones D) transport proteins E) antibodies 44) Some cells contain large numbers of mitochondria while others have relatively few or none. This suggests that A) cells with large numbers of mitochondria are short-lived. B) cells with large numbers of mitochondria have a high energy demand. C) cells with small numbers of mitochondria have a large ATP supply. D) cells with large numbers of mitochondria have a low energy demand. E) some cells are older than others. 45) Microscopic analysis of a tissue sample indicates that it contains abundant myosin filaments. This tissue is probably contains A) nerve cells. B) reproductive cells. C) bone cells. D) muscle cells. E) liver cells. Figure 3-1Â The Anatomy of a Representative Cell Use Figure 3-1 to answer the following questions: 46) Which structure organizes the mitotic spindle during cell division? A) 1 B) 2 C) 3 D) 5 E) 6 47) Synthesis of carbohydrates and lipids occurs in the structure labeled A) 4. B) 5. C) 6. D) 7. E) 8. 48) Which structure produces ATP for the cell? A) 1 B) 2 C) 3 D) 5 E) 6 49) Which organelle renews the cell membrane and modifies and packages proteins for secretion? A) 4 B) 5 C) 6 D) 7 E) 8 50) The structure labeled “1” permits the cell to A) attach to neighboring cells. B) produce more cells. C) increase surface area for increased membrane transport. D) swim in extracellular fluid. E) trap bacteria.