Biology: Practice Questions
BIOL1102 2008
PRACTICE QUESTIONS FOR THE MID-TERM EXAM
Practice Questions from week 2 lectures
1. The presence of cholesterol in the plasma membrane of some animals: a) Enables the membrane to stay fluid more easily when cell temperature drops b) Enables the animal to remove hydrogen atoms from saturated phospholipids c) Enables the animal to add hydrogen atoms to unsaturated phospholipids d) Makes the membrane less flexible, allowing it to sustain greater pressure from within the cell e) Makes the animal more susceptible to circulatory disorders
2. What kinds of molecules pass through a cell membrane most easily? a) Large and hydrophobic b) Small and hydrophobic c) Large polar d) Ionic e) Monosaccharides
3. A patient has had a serious accident and lost a lot of blood. In an attempt to replenish body fluids, distilled water equal to the volume of blood lost is transferred directly into one of his veins. What will be the most probable result of this transfusion? a) It will have no unfavourable effects as long as the water is free of viruses and bacteria b) The patient’s red blood cells will shrivel up because the blood fluid is hypertonic compared to the cells c) The patient’s red blood cells will swell because the blood fluid is hypotonic compared to the cells d) The patient’s red blood cells will shrivel up because the blood fluid is hypotonic compared to the cells e) The patient’s urine output will decrease
4. All of the following membrane activities require energy from ATP hydrolysis except: a) Facilitated diffusion b) Active transport c) Na+ ions moving out of the cell d) Proton pumps e) Translocation of potassium into a cell
5. All of the following processes take material into cells except: a) Pinocytosis b) Endocytosis c)
PRACTICE QUESTIONS FOR THE MID-TERM EXAM
Practice Questions from week 2 lectures
1. The presence of cholesterol in the plasma membrane of some animals: a) Enables the membrane to stay fluid more easily when cell temperature drops b) Enables the animal to remove hydrogen atoms from saturated phospholipids c) Enables the animal to add hydrogen atoms to unsaturated phospholipids d) Makes the membrane less flexible, allowing it to sustain greater pressure from within the cell e) Makes the animal more susceptible to circulatory disorders
2. What kinds of molecules pass through a cell membrane most easily? a) Large and hydrophobic b) Small and hydrophobic c) Large polar d) Ionic e) Monosaccharides
3. A patient has had a serious accident and lost a lot of blood. In an attempt to replenish body fluids, distilled water equal to the volume of blood lost is transferred directly into one of his veins. What will be the most probable result of this transfusion? a) It will have no unfavourable effects as long as the water is free of viruses and bacteria b) The patient’s red blood cells will shrivel up because the blood fluid is hypertonic compared to the cells c) The patient’s red blood cells will swell because the blood fluid is hypotonic compared to the cells d) The patient’s red blood cells will shrivel up because the blood fluid is hypotonic compared to the cells e) The patient’s urine output will decrease
4. All of the following membrane activities require energy from ATP hydrolysis except: a) Facilitated diffusion b) Active transport c) Na+ ions moving out of the cell d) Proton pumps e) Translocation of potassium into a cell
5. All of the following processes take material into cells except: a) Pinocytosis b) Endocytosis c)