BMS 300 EXAM 1 (COLORADO STATE
UNIVERSITY) QUESTIONS AND
CORRECT ANSWERS
\.Dipole Moment - ANSWERS✔-The difference in charge between atoms in a
water molecule
\.Water Molecules Interact With Each Other Through _______ - ANSWERS✔-
Hydrogen Bonds
\.Why is water liquid at room temperature? - ANSWERS✔-Because the hydrogen
bonds within it are constantly breaking and reforming on different molecules
(moving around)
\.Shell of Hydration - ANSWERS✔-The oxygen atoms in water will orient
themselves towards positively charged ions in water, the hydrogen atoms will
orient themselves towards negatively charged ions in water
\.Osmosis - ANSWERS✔-The movement of water through aquaporins
\.Aquaporins - ANSWERS✔-Water-Selective Channels
, \.How do plants and trees move water upwards from the ground? - ANSWERS✔-
Water will move across a barrier if one side has more ions than the other. If
aquaporins allow water to move but not ions, water will continuously flow
towards the other side and drain from the other, causing hydrostatic pressure to
form and water to move upwards.
\.Triglycerides - ANSWERS✔--animal fats or vegetable oils
-Hydrophobic, water insoluble
\.Ester Bond - ANSWERS✔-Happens when a fatty acid and a glycerol molecule
bond
\.Are Phospholipids Amphipathic? - ANSWERS✔-Yes. They have hydrophobic
regions and hydrophilic regions
\.Micelle - ANSWERS✔-A sphere of phospholipids with hydrophobic tails on the
inside and hydrophilic heads on the outside. If any water enters a micelle, it will
explode.
\.Liposome - ANSWERS✔-a sphere with a phospholipid bilayer. Hydrophobic tails
face towards each other inside the outer layer of hydrophilic heads. This is a more
stable structure as water entering it will not destroy it.
\.How do proteins move in and out of cells? - ANSWERS✔-Through hydrophilic
protein channels
UNIVERSITY) QUESTIONS AND
CORRECT ANSWERS
\.Dipole Moment - ANSWERS✔-The difference in charge between atoms in a
water molecule
\.Water Molecules Interact With Each Other Through _______ - ANSWERS✔-
Hydrogen Bonds
\.Why is water liquid at room temperature? - ANSWERS✔-Because the hydrogen
bonds within it are constantly breaking and reforming on different molecules
(moving around)
\.Shell of Hydration - ANSWERS✔-The oxygen atoms in water will orient
themselves towards positively charged ions in water, the hydrogen atoms will
orient themselves towards negatively charged ions in water
\.Osmosis - ANSWERS✔-The movement of water through aquaporins
\.Aquaporins - ANSWERS✔-Water-Selective Channels
, \.How do plants and trees move water upwards from the ground? - ANSWERS✔-
Water will move across a barrier if one side has more ions than the other. If
aquaporins allow water to move but not ions, water will continuously flow
towards the other side and drain from the other, causing hydrostatic pressure to
form and water to move upwards.
\.Triglycerides - ANSWERS✔--animal fats or vegetable oils
-Hydrophobic, water insoluble
\.Ester Bond - ANSWERS✔-Happens when a fatty acid and a glycerol molecule
bond
\.Are Phospholipids Amphipathic? - ANSWERS✔-Yes. They have hydrophobic
regions and hydrophilic regions
\.Micelle - ANSWERS✔-A sphere of phospholipids with hydrophobic tails on the
inside and hydrophilic heads on the outside. If any water enters a micelle, it will
explode.
\.Liposome - ANSWERS✔-a sphere with a phospholipid bilayer. Hydrophobic tails
face towards each other inside the outer layer of hydrophilic heads. This is a more
stable structure as water entering it will not destroy it.
\.How do proteins move in and out of cells? - ANSWERS✔-Through hydrophilic
protein channels
