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38 diagram and label a portion of a plasma membrane

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38) Diagram and label a portion of a plasma membrane showing the molecular components of the membrane. Explain why “fluid mosaic” is a good description of the plasma membrane structure. Answer: See Figure 2.2. p. 27 Topic: PLASMA MEMBRANE 41) For each stage of mitosis, give a two- or three-sentence description of events. Your answer should include the names of the four stages and proper use of the following terms: chromatin, chromosome, chromatid, centromere, sister chromatid, daughter chromosome. Answer: See Table 2.3 for brief descriptions of each stage. Answer should exhibit clear understanding of the listed terms, as used in the text on p. 45. Topic: SOMATIC CELL DIVISION SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. 45) The plasma membrane may be described as two layers of _____ molecules with _____ molecules floating in their midst. Answer: phospholipid, protein Topic: PLASMA MEMBRANE 49) Smooth endoplasmic reticulum is the site of production of _____. Answer: fatty acids, phospholipids, or steroids Topic: ORGANELLES 50) Cisterns (reservoirs or sacs) is a term used to describe portions of two organelles, the _____ and the _____. Answer: endoplasmic reticulum, Golgi complex Topic: ORGANELLES 52) The contents of the innermost region of a mitochondrion are called the _____. Answer: matrix Topic: ORGANELLES 53) The only human cell that has a flagellum is the _____ cell. Answer: sperm Topic: ORGANELLES 55) Somatic cell division involves the process of cytokinesis and _____. Answer: mitosis Topic: SOMATIC CELL DIVISION MATCHING. Choose the item in Column 2 that best matches each item in Column 1 Match the names of the membrane transport processes in column 1 with the examples in column 2. 3
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59) Column 1: exocytosis Column 2: secretion of digestive enzymes Foil: movement of fluids from the mouth to the stomach Answer: secretion of digestive enzymes Topic: PLASMA MEMBRANE Match the cellular components in column 1 with their descriptions or functions in Column 2. 66) Column 1: microtubules Column 2: structural and functional components of cilia and flagella Answer: structural and functional components of cilia and flagella Topic: ORGANELLES 69) Column 1: ribosomes Column 2: sites of protein synthesis Answer: sites of protein synthesis Topic: ORGANELLES 70) Column 1: endoplasmic reticulum Column 2: membrane network; comprises more than half of the membranous surfaces inside the cell Answer: membrane network; comprises more than half of the membranous surfaces inside the cell Topic: ORGANELLES 71) Column 1: Golgi complex Column 2: consists of an entry face and an exit face, separated by medial cisternae Answer: consists of an entry face and an exit face, separated by medial cisternae Topic: ORGANELLES 73) Column 1: peroxisomes Column 2: contains the enzyme catalase for the breakdown of H 2 O 2 Answer: contains the enzyme catalase for the breakdown of H 2 O 2 Topic: ORGANELLES 74) Column 1: mitochondria Column 2: contain circular DNA molecules that allow for replication of these organelles Answer: contain circular DNA molecules that allow for replication of these organelles Topic: ORGANELLES Match the events in Column 2 with the phases of somatic cell division in Column 1.
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