Exani III -> Metodología de la investigación
Seleccione la característica del paradigma interpretativo.
Exani II, Exani II -> Pensamiento Analítico
Existe un conocimiento. Si todo conocimiento es importante, y la física es un tipo de conocimiento, entonces se puede decir que...
Biología
Es el tejido presente en los mamíferos que contiene células que actúan como medios de defensa para eliminar organismos patógenos. Además, permite transportar oxígeno y dióxido de carbono.
MATEMÁTICA SIMULADOR PARA LA UNAM
El diámetro de una circunferencia se apoya en los puntos A = (8, -4) y B = (-9, 8), determina las coordenadas del centro.
AREA 1 BANCO ESPECIAL UNAM
A partir de la teoría CELULAR QUE NOMBRE RECIBEN LAS ENTIDADES SIN VIDA
Exani II, Exani II -> Comprensión Lectora
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:
Español
Identifica la forma del discurso que se ejemplifica en el siguiente fragmento.
Frisaba la edad de este excelente joven en los treinta y cuatro años. era de complexión fuerte y un tanto hercúlea, con rara perfección formado, y tan arrogante, que si llevara uniforme militar ofrecería el más guerrero aspecto y talle que pueda imaginarse. Rubios el cabello y la barba, no tenía en su rostro la flemática imperturbabilidad de los sajones.
FISICA SIMULADOR PARA LA UNAM
¿Qué se debe medir para saber el daño que la corriente eléctrica le hace al ser humano?
Inglés
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 | |
What is the best definition of the word scarce as it is used in line 27?
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