Resolver Preguntas

¿Qué se necesita para aumentar la energía cinética de un cuerpo?

Proceso por el que recibe energía las células.

Choose the correct answer for each question according to the information in the text. Each line is numbered to help you identify them quickly.

Sunflowers Make Bees Poop—a Lot. Here's Why That's Good
Paragraph	Text
[1]	Bumblebees and other pollinators face many threats, including pesticide exposure,
[2]	climate change, habitat loss due to agriculture and development, and pathogens
[3]	that ravage multiple species. But a recent finding may help lighten their load.
[4]	Previous studies have shown sunflower pollen can work like a medicine for
[5]	bumblebees afflicted by a parasite called Crithidia bombi, a single-celled organism
[6]	that takes up residence in the bee's gut [and harms their health]. But scientists couldn't
[7]	explain how sunflower pollen vanquished C. bombi—did it boost the bees' immune
[8]	function, or perhaps poison the parasite directly?
[9]	New research, published in the Journal of Insect Physiology, shows the answer is
[10]	deceptively simple. "Sunflower pollen makes bumblebees poo a whole lot," says lead
[11]	author Jonathan Giacomini, which flushes the parasite out.
[12]	Plant products like nectar and pollen are a treasure trove of potential insect medicines
[13]	that scientists are just beginning to understand, he adds. "There are natural things out
[14]	there that bees are interacting with that can be beneficial for them," Giacomini says.
[15]	And by making changes to the landscape, scientists hope we can help give bees a
[16]	fighting chance.
[17]	Plant power
[18]	If you happen upon a fuzzy, buzzing, flying creature in eastern North America, there's
[19]	a strong chance it's a common eastern bumblebee (Bombus impatiens). Yellow and
[20]	black striped with a rump covered in soft hairs, they're social insects that live in
[21]	colonies and love a good crevice—they build their homes in birdhouses, woodpiles,
[22]	abandoned burrows, and dense grasses.
[23]	[They] are important pollinators, both in the wild and in agriculture, where they're raised
[24]	and used to pollinate crops including tomatoes and pumpkins. Like other pollinators,
[25]	bumblebees face many threats, and C. bombi isn't even the biggest bumblebee
[26]	bugaboo. On its own, the parasite doesn't have much of an effect on a bumblebee's
[27]	health. But when food is scarce, C. bombi can shorten a bee's lifespan and even
[28]	reduce the number of young queens a colony can produce.
[29]	Lynn Adler is an evolutionary ecologist at the University of Massachusetts Amherst
[30]	who studies interactions between plants and insects. For years, she and longtime
[31]	collaborator Rebecca Irwin at North Carolina State University suspected pollinators
[32]	might be getting dosed by flowers since plants often invest chemically active
[33]	compounds into their nectar and pollen to help their genetic payload arrive at
[34]	its destination.
[35]	"Many plant defensive compounds can be medicinal at certain doses," Adler says. After
[36]	all, "most of our human medicines come from plants."
[37]	Giacomini discovered the effect of sunflower pollen as an undergraduate working in
[38]	Adler's lab in 2018. From [these] very first tests, sunflower pollen dramatically reduced
[39]	C. bombi parasite load in common eastern bumblebees, often clearing infection
[40]	completely. "We've been shocked at how consistent and effective sunflower pollen
[41]	has been," Adler says.
Elizabeth Anne Brown, National Geographic

On which of the following elements did Giacomini base the underlined comment in line 10?

Identifique el compuesto relacionado con el grupo funcional éster.

¿Qué pretende Ávila Camacho con la Unidad Nacional?

Observe con atención el siguiente texto y responda las siguientes preguntas. 

Texto 1: Uno de los problemas más apremiantes en la enseñanza de la escritura a mano se presenta con los niños zurdos. La norma tradicional ha sido intentar inducir a todos los niños a escribir con sus manos derechas. Los padres y los maestros a la par, tienen antipatía a que los niños utilicen su mano izquierda. Por otro lado, los psicólogos han demostrado, fuera de toda duda, que algunas personas son zurdas naturalmente y que es más difícil para ellos efectuar cualquier acto hábil con la mano derecha que con la mano izquierda.
Texto 2: Además, algunos creen que obligar que a un niño zurdo a escribir con la mano derecha puede convertirle en nervioso y puede ocasionar el tartamudeo. Parece que en algunos casos esto es verdadero aun-que en la gran mayoría de niños que se corrigen no se tiene noticias de efectos nocivos. Además de estas dificultades la zurdería parece ocasionar, algunas veces, la escritura de espejo escritura de derecha a izquierda y la inversión en la lectura, como leer "era" por "are".
El autor da a entender que:

Si el punto medio de un segmento de recta es (-1,6) y uno de sus extremos es A = (3,5). ¿Cuál es el otro extremo del segmento?

Es una oración coordinada disyuntiva

Son proposiciones que se desprenden del texto, excepto:

Conocer al enemigo

El pesimismo constituye una interpretación de la experiencia que falsea la realidad y genera en nosotros diferentes versiones de miseria emocional: ansiedad, frustración, desánimo, apatía, inseguridad y diferentes manifestaciones del comportamiento: el abandono de tareas y metas, la inactividad, la indecisión, la limitación de nuestra gama de conductas.
   Si el pesimismo afecta las emociones, no es difícil suponer que quienes lo sufren pueden experimentar más enfermedades o debilitamientos físicos; y si afecta el comportamiento tampoco es imposible sospechar que la persona pesimista no desarrollará su potencial, sus habilidades plenas y, por tanto, sus sueños y sus metas principales.

^{Eduardo Aguilar Kubli. Domina el optimismo}

¿Cuántos ATP se producen en la respiración aerobia?