which of the following macromolecules is primarily responsible for the insolubility of cell...
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Which of the following macromolecules isprimarily responsible for the insolubility ofcell membranes in water? a. starchb. cellulosec. proteind. phospholipide. glycogen
Answer: d
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All of the following are typical componentsof the plasma membrane of a eukaryoticcell EXCEPT
a. glycoproteinsb. cytochromesc. cholesterold. phospholipidse. integral proteins
Answer: b
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1. Cell recognitioncomponent
2. Hydrophobicportion of protein
3. Cholesterol
4. Carrier for celltransport
Answer: A
Answer: D
Answer: E
Answer: B
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Which of the following is an example of active transportacross a membrane?
a.The movement of water from a nephron into the collecting duct of the kidney.b. The movement of glucose by facilitated diffusion
into a liver cell.c. The movement of water from the inside of a cell into
a surrounding hypertonic medium.d. The movement of Na+ into a neuron as a nerve
impulse is generated.e. The movement of H+ into a thylakoid disc during
photosynthesis.
Answer: e
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More unsaturated=More fluid
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2003B- Water is important for all living things.The functions of water are directly relatedto its physical properties.
a) Describe how the properties ofwater contribute to the following:
•plasma membrane structure
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2001- Proteins- large complex molecules- aremajor building blocks of all living organisms.Discuss the following in relation to proteins.
(c) The roles of proteins in membranestructure and transport of moleculesacross the membrane.
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Transduction
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Question #2: 1999
Communication occurs among the cells in a multicellular organism.Choose THREE of the following examples of cell-to-cell communication, and for each example, describe the communication that occurs and the types of responses that resultfrom this communication.
• Communication between two plant cells• Communication between two immune system cells• Communication either between a neuron and another neuron, or between a neuron and a muscle cell• Communication between a specific endocrine-gland cell and its target cell
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Question #4: 2003
Death is a natural and necessary part of life cycles at all levels ofOrganization.
(a) Discuss TWO examples of how cell death affects thedevelopment and functioning of a multicellular organism.(b) Discuss ONE exmple of how substances are degradedand reused in cells.(c) Discuss the evolutionary significance of death.
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Which of the following macromolecules isprimarily responsible for the insolubility ofcell membranes in water? a. starchb. cellulosec. proteind. phospholipide. glycogen
Answer: d
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All of the following are typical componentsof the plasma membrane of a eukaryoticcell EXCEPT
a. glycoproteinsb. cytochromesc. cholesterold. phospholipidse. integral proteins
Answer: b
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Which of the following is an example of active transportacross a membrane?
a.The movement of water from a nephron into the collecting duct of the kidney.b. The movement of glucose by facilitated diffusion
into a liver cell.c. The movement of water from the inside of a cell into
a surrounding hypertonic medium.d. The movement of Na+ into a neuron as a nerve
impulse is generated.e. The movement of H+ into a thylakoid disc during
photosynthesis.
Answer: e
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1. Cell recognitioncomponent
2. Hydrophobicportion of protein
3. Cholesterol
4. Carrier for celltransport
Answer: A
Answer: D
Answer: E
Answer: B