Derecho
¿Contra qué bien jurídico tutelado atenta el contagio intencional de una enfermedad?
Exani II, Exani II -> Comprensión Lectora
Según la lectura, ¿qué actitud adoptó el leñador jefe hacia el joven leñador con bajo rendimiento?
En cierta ocasión, un joven llegó a un campo de leñadores con el propósito de obtener trabajo. Habló con el responsable y éste, al ver el aspecto y la fortaleza de aquel joven, lo aceptó sin pensárselo y le dijo que podía empezar al días siguiente. Durante su primer día en la montaña trabajó duramente y cortó muchos árboles. El segundo día trabajó tanto como el primero, pero su producción fue escasamente la mitad del primer día. El tercer día se propuso mejorar su producción. Desde el primer momento golpeaba el hacha con toda su furia contra los árboles. Aun así, los resultados fueron nulos. Cuando el leñador jefe se dio cuenta del escaso rendimiento del joven leñador, le preguntó: -¿Cuándo fue la última vez que afilaste tu hacha? El joven respondió: -Realmente, no he tenido tiempo... He estado demasiado ocupado cortando árboles...
FISICA SIMULADOR PARA LA UNAM
Un esquiador se lanza por una rampa desde una altura h y alcanza una velocidad de 12.6 m/s. Despreciando la resistencia del aire y la fricción ¿Cuánto vale la altura de la rampa? CONSIDERA g=9.8 m/s2
Exani II, Exani II -> Pensamiento Matemático
Observa la siguiente tabla y contesta.
| Edad de alumnos | Frecuencia | Frecuencia acumulada |
| 18 | 15 | 15 |
| 19 | 35 | 50 |
| 20 | 40 | 90 |
| 21 | 48 | 138 |
| 22 | 112 | 250 |
| TOTAL | 250 | ------------------------ |
Calcula donde está el primer cuartil en la tabla
Exani II, Exani II -> Comprensión Lectora
¿A cuál tipo de texto pertenece el fragmento?
Se denomina diurético (del lat. diuretĭcus, y éste del gr. διουρητικός / gr. δια- "a través de"; gr. ούρο- "orina"; sufijo gr. -ικός- "con relación") a toda sustancia que al ser ingerida provoca una eliminación de agua y electrolitos del organismo, a través de la orina y la expulsión de materia fecal.
Exani II, Exani II -> Estructura de la Lengua
¿En cuál enunciado la preposición con indica modalidad?
Matemáticas Financieras
Determine a cuánto asciende la deuda de una persona si el banco le prestó 2/3 de $900,000, y ahora es 6/8 menor que hace 5 meses.
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 | |
The most important contribution of Giacomini's study was to...
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