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
All of the following are typical componentsof the plasma membrane of a eukaryoticcell EXCEPT
a. glycoproteinsb. cytochromesc. cholesterold. phospholipidse. integral proteins
Answer: b
1. Cell recognitioncomponent
2. Hydrophobicportion of protein
3. Cholesterol
4. Carrier for celltransport
Answer: A
Answer: D
Answer: E
Answer: B
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
More unsaturated=More fluid
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
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.
Transduction
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
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.
Which of the following macromolecules isprimarily responsible for the insolubility ofcell membranes in water? a. starchb. cellulosec. proteind. phospholipide. glycogen
Answer: d
All of the following are typical componentsof the plasma membrane of a eukaryoticcell EXCEPT
a. glycoproteinsb. cytochromesc. cholesterold. phospholipidse. integral proteins
Answer: b
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
1. Cell recognitioncomponent
2. Hydrophobicportion of protein
3. Cholesterol
4. Carrier for celltransport
Answer: A
Answer: D
Answer: E
Answer: B