The cell membrane<span> is selectively permeable to ions and organic molecules and controls the movement of substances in and out of </span>cells<span>. The basic </span>function of the cell membrane<span> is to protect the </span>cell<span> from its surroundings. It consists of the phospholipid bilayer with embedded proteins.</span>
C. carbon monoxide is the answer
Answer:
c. Most scientist, including Darwin thought species were product of natural processes and changed over time.
Explanation:
Darwin was not the first scientist to think or proposed that the species changed over the time, but in his expedition and through several observations, he concluded that these changes over the time are the consequence of the adaptations of the living things to the environment that surround it.
That is the reason why his theory mixed with Mendel genetics discover, changed the point of view of the evolution in species.
Answer:
When a future offspring has just been conceived it has the highest level of potency in Totipotency.
Explanation:
Potency is the ability of cells to differentiate. AT different stages of development the level of potency changes. The highest level of potency is Totipotency and these cells have the ability to develop a whole organism. The common examples are spores and zygote. In embryonic stage the cells are Pluripotent and they can differentiate into different type of cells. Pluripotent cells after further development changes into Multipotent cells. Unipotent cells have the least potency and can develop only in one cell linage.