The correct answer is: [D]:
_____________________________________________________________
" <span>The two populations will evolve separately and become their own species. "
_____________________________________________________________</span>
Answer:
<u>d. Transport proteins within the membrane serve as a tunnel for molecules to enter the cell.
</u>
<u />
Explanation:
Solutes are typically moved across the cell through either passive or active transport. The cells, surrounded by a bilipid layer or plasma membrane is amphiphlic- its polar, hydrophilic lipid heads face outwards, while their non-polar hydrophobic lipid tails face inwards towards each other.
While lipid-soluble molecules move across the layer easily, it is also difficult for charged and also large molecules to move across its surface, into the cell. Transmembrane channels, <u>embedded within the membrane</u>, help to maintain selective permeability as transport proteins, pores and gated channels. Simple diffusion happens as a method of passive transport in cells through plasma membranes.
The solutes travel through the plasma membrane in the process of diffusion from regions of high concentration to regions of low concentration; this occurs without the use of energy. <u>Molecules moving against their concentration require active transport mechanism to cross the membrane</u>.
its nitrogen i took the testttttttttttttttttttttttttttttttttt
If all other resources are in adequate supply, then the light intensity will increase the rate of photosynthesis. To balance it out, other things then usually start becoming short in supply, so things often don't change.
Answer:
<em>True</em>
Explanation:
El- Haiwan is an important Arabic book which has been translated to many different languages. The book's title refers to the meaning of animals in the English language. This book is very important in explaining many biological phenomenons taking place in different animals. This book also explains about reproduction which occurs in animals. Corpus Aristotelicum is known to be the writer of this book. Hence, the above statement is true.
