Answer:
The reason why, in cold temperatures and depending on the type of fatty acids, the phospholipid bilayer is less or more fluid is due to the different molecular interactions that occur between the tails of both types of fatty acids. the unsaturated - which determines the fluidity of the cell membrane.
Explanation:
<em>Temperature and saturation of fatty acid tails</em><em> are two factors that affect the </em><em>fluidity of the phospholipid bilayer</em><em> in cell membranes.</em>
Under normal conditions, low temperatures decrease the fluidity of the phospholipid bilayer, since it decreases the kinetic energy and increases the molecular interactions, which increases the stiffness.
However, unsaturated fatty acids - those that contain double bonds in their molecules - have a configuration that allows their tails to be more separated in their arrangement in the bilayer, which avoids the increase in molecular interactions and maintains to a certain extent the membrane fluidity, despite low temperatures.
The answer is water table. Water table is the boundary
between vandose zone and the zone of saturation. The unsaturated is the vandose
while the saturated is the groundwater zone. Water table is located in the top
of an unconfined aquifer, that can tell the level below which soil and rock are
saturated with water and the top of the zone that is saturation.
Hmm I'm thinking D. Sam could have picked up another virus at school as well as catching the same one from Ana again, so Ana could get sick again with either virus.
Researchers aboard Alvin discovered the presence of hydrothermal vents on the ocean floor.
