Bio clicker answers Exam 2

Bio clicker answers Exam 2 - Which type of fatty acid would...

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Which type of fatty acid would be more abundant in the membranes of plants, algae, and bacteria in cold environments? A) saturated B) unsaturated Which type of fatty acid would offer the greatest benefit for membranes of plants, algae, and bacteria in the coldest habitats on Earth? A) saturated B) monounsaturated C) polyunsaturated Which type of fatty acid would be more abundant in the membrane phospholipids of plants, algae, and bacteria from hot environments? A) saturated B) monounsaturated C) polyunsaturated What changes occur in membranes of a plant in Colorado that grows throughout the hot summer season and overwinters during the cold winter? A) The fatty acid composition will not change between seasons B) The proportion of unsaturated fatty acids will be higher in the summer and then decrease in the winter C) The proportion of saturated fatty acids will be higher in the summer and then decrease in the winter What kinds of molecules pass through the lipid portion of a cell membrane most easily? A) large and hydrophobic B) small and hydrophobic C) large and hydrophilic D) small and hydrophilic δ -  O     δ +H   H δ + H-O-H     Which of the following go through the lipid bilayer unaided? A) carbon dioxide, CO2 B) oxygen, O2 C) water, H2O D) A and B E) A, B, and C O=C=O O  C  O   O=O   O  O
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    C When the glucose concentration is lower in the gut than in the intestinal cells, glucose moves into the cells A) through a glucose channel B) directly through the lipid bilayer C) via sodium-glucose cotransport D) through the ATP-fueled sodium/potassium pump Which of the following statements about the cotransport of sucrose and protons (H+) is incorrect? A) the same protein can also perform cotransport of sodium ions and glucose B) sucrose is able to enter the cell against its concentration gradient C) the higher proton (H+) concentration outside the cell is the result of active (ATP-fueled) transport D) a substance that prevents protons (H+) from binding to the cotransport protein also prevents the transport of sucrose E) the protons (H+) are moving through the cotransporter down their concentration gradient XXXXX- When the glucose concentration after a meal is higher in the gut than in the intestinal cells, glucose moves into the cells A) through a glucose channel B) directly through the lipid bilayer C) via sodium-glucose cotransport D) through the ATP-fueled sodium/potassium pump B) A function of cholesterol that does not have the potential to harm health is C) A) as a component of cell membranes D) B) as a component of LDL (low density lipoprotein) E) C) as a component of deposits in arteries XXXXX- Familial hypercholesterolemia is characterized by which of the following? A) an inefficient version of the LDL receptor on the cell membrane
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This note was uploaded on 05/19/2010 for the course BIO BIO taught by Professor Johnson during the Fall '10 term at Colorado.

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Bio clicker answers Exam 2 - Which type of fatty acid would...

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