Answer:lipid bilayer are essentially impermeable to polar solutes
Explanation:the cell membrane is a phospholipid bilayer.it is composed of lipids,proteins and carbonhydrates attached.the lipid bilayer forms the bulk of material on the membrane as a result it is impermeable to the movement of polar molecules in and out of the cell.small and non polar substances can pass through the bilayer of the membrane. the lipids and proteins occurs in varying composition in the membrane, depending on the
cell .the membrane has both a hydrophobic end and a hydrophilic end.the hydrophobic ends of the membrane folds toward each other.while the hydrophilic end is exposed to the water phase.the membrane is very flexible and thin and acts as a barrier that separates the cells external and internal environment
The answer is (3) an increase in the proportion of offspring <span>that have favorable characteristics.
</span>In natural selection, genotype variations that will increase the chance of survival and reproduction of some organism are preserved and will be inherited. Peppered moth color variation is a good example of natural selection.<span>During the Industrial revolution, due to pollution, trees become darker in the urban area. Light-colored moths were, thus, easy prey. The dark-colored moths were able to camouflage on dark trees and avoid predators. The phenomenon is known as industrial melanism. So, in polluted urban areas, the number of dark-colored peppered moths increased. In the clean environment, were much effective in hiding from predators and they outnumbered the dark-colored moths.
Therefore, the </span>proportion of offspring <span>that have favorable characteristics in such environment will increase.</span>
Answer:
New solids and gases are formed,including sugar and oxygen
Answer:
The amount of bacteria that are there at the end of 55 hours is 2310231000
Explanation:
From the description in the question, the bacteria's population size doubles per hour;
Within 1 hour = 21002100 × 2 = 42004200
Thus
After 1 hr ⇒ 42004200
55 hrs ⇒ ?
? = 55 × 42004200 = 2310231000
The amount of bacteria that are there at the end of 55 hours is 2310231000
Objective is to determine how food is broken down. common conditions are the same meat and amount of liquid. variable factor is the type of liquid. i would guess that the tubes are at that temperature because that is the temperature inside of the stomach. water does not contain an enzyme. results - gastric juice contains enzymes to break down the meat.
