54. The ingestion and destruction of a bacterium by a white blood cell is an exa
ID: 3524730 • Letter: 5
Question
54. The ingestion and destruction of a bacterium by a white blood cell is an example of: a. phagocytosis b. pinocytosis c. lysis d. active transport e crenation For questions 55 through 61 use the following list of steuctures. Answers may be more than once used a rough endoplasmic reticulum b. nucleus c. smooth endoplasmic reticulum d. Golgi apparatus 55. site of synthesis for exported proteins 56. site of citric acid cycle (Krebs cycle) 57. synthesizes lipids and carbohydrates 58. contains cristae and matrix 59. produces secretory vesicles 60. contains histones and nucleosomes 61. forms primary lysosomes 62. During which phase of the cell ycle does DNA replication occur? a. mitosis b. Gi phase c. Gz phase d. S phase e. Go phase What is the function of the spindle fibers that appear during mitosis? a. replicate chromosomes b. separate chromatids c. remove nuclear membrane d. synthesize new DNA e. all of the above 63.Explanation / Answer
54.(a) The ingestion and destruction of a bacterium by white blood cell is called Phagocytosis. In this process the bacterium is attracted to the WBC because the proteins in the bacterium is marked by the antibodies formed by WBCs. Once the bacterium reaches close to the WBCs then it ingests the bacterium and destroys it and the whole process is called Phagocytosis.
55. (a) The site of synthesis for exported proteins is Rough Endoplasmic Reticulum
56. (e) Site of citric acid cycle or Krebs cycle is Mitochondrion
57. (c) Smooth Endoplasmic Reticulum synthesizes lipids and carbohydrates
58. (e) Mitochondrion contains Cristae and Matrix
59. (d) Golgi Apparatus produces secretory vesicles.
60. (b) Nucleus contains histones and nucleosomes.
61. (d) Golgi Apparatus forms Primary Lysosomes.
62. (d) Cell Replication occurs in the S phase also known as Synthesis Phase of the Interphase.
63. (b) Main function of spindle fibers during mitosis is to separate the sister chromatids.
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