Small, non-polar molecules can pass through the membrane with ease. Which
is an accurate description of how these
molecules travel?

Requiring energy, like going up hill. Always
active trasport

No energy needed. This is like going
downhill. Usually passive transport

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

What is the approximate time of death of the body temperature is 29.4 degrees celsius

Which of the following statements is accurate about evolution? question 10 options: natural selection only eliminates odd individuals. evolution means that a population never has changes in its genetic frequencies. mutations are always harmful. evolution means that a population undergoes changes in its gene frequencies over time.