CANAL Las proteínas canal y muchas proteínas "carrier" sólo pueden trasladar sustancias a través de la membrana en forma pasiva. Este pasaje mediado por proteínas se conoce como difusión facilitada. La glucosa, por ejemplo, es una molécula hidrofílica que entra en la mayoría de las células por difusión facilitada.
Answer:
"This is a specific example of a reproductive barrier, called behavioral isolation or sexual isolation".
Explanation:
Reproductive barriers are <em>isolation mechanisms</em> that prevent mating between two or more species. The <u><em>prezygotic mechanism</em></u> avoids fertilization between individuals of different species, and the <u><em>postzygotic mechanism</em></u> avoids the zygote to develop and reach the adult stage.
There are different types of reproductive barriers, one of them is <em>behavioral isolation</em>, also known as <em>ethological isolation</em> or <em>sexual isolation</em>. This is a <em>prezygotic barrier</em> that refers to the fact that <em>many species occupy the same area</em> but they are <em>not sexually attracted</em> to each other and might even be rejected <em>because of behavioral factors</em>, and this is why they do not get to mate. This mechanism includes courtship patterns or mating rituals, and specific chemical signals that allow the recognition between individuals of the same species. A typical <em>example</em> is the <em>recognition songs</em> of some species like frogs, birds, insects, and etcetera.
D) Lagging strand is composed of Okazaki fragments
Answer:
C
Explanation:
Nearsightedness is what happens when the image does not reach the retina whereas farsightedness happens when light is focused beyond the retina.
You can gather information from both actions.