Browse questions and clear answers across school subjects and test-preparation topics.
Which of the following quotes from this selection captures the central idea? A “BDNF increases resilience to aging, and damage caused by trauma or infection.” B “Walking makes us healthier, happier, and brainier.” C “There is substantial…
Read more →Based on this excerpt, those who witness bullying may be more likely to A have short-term memory loss. B experience mental health issues. C fear becoming bullies themselves. D intervene to protect the victim.
Read more →I Am A Witness changed “how teens perceive bullying.” Which two of the following show how the Ad Council measured this? A. tracking social media activity about the campaign B. surveying teens before and after the campaign C. requesting…
Read more →I Am A Witness changed “how teens perceive bullying.” Which two of the following show how the Ad Council measured this? A) tracking social media activity about the campaign B) surveying teens before and after the campaign C) requesting…
Read more →Explain why oxygen will diffuse into the cell in the diagram. Use the diagram and the word bank to help you. Word bank: particles, move, concentration, higher, lower, more, less, oxygen.
Read more →What does the author mean when he states that it would be an “exercise in futility” to try to list all the behaviors observed in a person? A) It should be easy to list every behavior you observe in a person with whom you are interacting.…
Read more →Based on what you have read, the man in this image is most likely A a confused person. B an open person. C a guarded person. D a relaxed person.
Read more →Los temas que elegiste sobre la generación de energía son muy interesantes y tendrán un alto impacto en la región. ¿Qué lástima que no puedas elegir los dos. ¿Cuál te interesa más? Incineración de residuos Vertederos de biogás
Read more →Many animals have skeletons or other supportive structures, whereas plants do not. Most animals cannot make their own food by photosynthesis, while most plants can. How do these differences relate to differences in the cell structures of…
Read more →Many animals have skeletons or other supportive structures, whereas plants do not. Most animals cannot make their own food by photosynthesis, while most plants can. How do these differences relate to differences in the cell structures of…
Read more →Match the structures listed to the cells shown. bacteria cells – cell membrane, cell wall, chloroplasts, nucleus, other organelles fish embryo cell – cell membrane, cell wall moss leaf cells – cell membrane, nucleus, mitochondria, other…
Read more →Bacteria cells Fish embryo cell Moss leaf cells multicellular prokaryotic unicellular eukaryotic
Read more →Define each organism type as unicellular or multicellular and each cell category as eukaryotic or prokaryotic. unicellular eukaryotic prokaryotic
Read more →The dots visible in the frog and onion cells are nuclei. What type of cells are frogs and onions made of? Record your data. Start Typing…
Read more →The cell has a membrane and ribosomes but no organelles. Select The cell has many chloroplasts. Select The cell has a cell membrane and mitochondria but no cell wall. Select The cell has a nucleus. Select
Read more →Which animal cell structures are involved in obtaining and using energy? A. lysosomes and mitochondria B. nuclei and cytoplasm C. smooth ER and rough ER D. Golgi apparatus and rough ER
Read more →Which structure in this cell has a similar function to that of skin cells that interact to form a protective barrier in animals? A) Flagellum B) Cell membrane C) Nucleus D) Ribosome
Read more →Elijan la palabra que complete el sentido de cada analogía y escríbanla en la línea correspondiente. Femenino es a __________ como masculino es a hombre. a) mujer b) adolescente c) niña d) anciana Sirena es a __________ como centauro es a…
Read more →Identifiquen y subrayen la palabra que no concuerda con la serie. viento brisa huracán temblor roca piedra pedrusco cueva computadora impresora USB máquina de escribir África España Asia América puerta ventana cancel muro alameda rosedal…
Read more →Elijan la palabra que complete el sentido de cada analogía y escríbanla en la línea correspondiente. 1. femenino es a ______ como masculino es a hombre. a) mujer b) adolescente c) niña d) anciana 2. pez es a ______ como aire es a aire. a)…
Read more →Sara comió enchiladas verdes y fresas con crema; Gael, pollo en mole y pastel de chocolate. Mientras tanto el vendedor colocó la vajilla, los cubiertos, las tazas de café, las servilletas, el azúcar, la sal y la pimienta. a) Sara y Gael…
Read more →Sara comió enchiladas verdes y fresas con crema; Gael, pollo en mole y pastel de chocolate. Mientras tanto el vendedor colocó la vajilla, los cubiertos, las tazas de café, las servilletas, el azúcar, la sal y la pimienta. Sara y Gael…
Read more →Sara comió enchiladas verdes y fresas con crema; Gael, pollo en mole y pastel de chocolate. Mientras tanto el vendedor colocó la vajilla, los cubiertos, las tazas de café, las servilletas, la panera, el azúcar, la sal y la pimienta. Sara…
Read more →Sara comió enchiladas verdes y fresas con crema; Gael, pollo en mole y pastel de chocolate. Mientras tanto el vendedor colocó la vajilla, los cubiertos, las tazas de café, las servilletas, el azúcar, la sal y la pimienta. Sara y Gael…
Read more →Seleccionen la opción que contenga una oración mal puntuada: a) Juana está rodeada por la acumulación de objetos; sin embargo, no puede decirse que sea rica. b) Alcira, a su vez, supo que ella no podría acumular tantas cosas. c) Por…
Read more →2. selecciona la opción que contenga una oración mal puntuada: a) Juan está rodeado por la acumulación de objetos; sin embargo, no puede decirse que b) Laura, a su vez, sabe que ella no podría acumular tantas cosas. c) Ayda es una…
Read more →Organicen los siguientes párrafos con números arábigos de tal forma que vinculen lógicamente uno con otro y tenga el texto significado. 1. El zapateado se enreda. Ella se levanta del castor con la punta de los dedos, trenza, con sus…
Read more →Organicen los tres textos siguientes con números arábigos de tal forma que cada uno sea coherente y lógico. Deben contener una idea introductoria, dos de desarrollo y una de cierre: I. II. III.
Read more →Organicen los tres textos siguientes con números arábigos de tal forma que cada uno sea coherente y lógico. Deben contener una idea introductoria, dos de desarrollo y una de cierre. I. II. III.
Read more →Organicen los tres textos siguientes con números arábigos de tal forma que cada uno sea coherente y lógico. Deben contener una idea introductoria, dos de desarrollo y una de cierre: 1. Este se encontraba en un sitio conocido como El…
Read more →Lean los siguientes párrafos y elaboren el tema o el aspecto particular que abordan: I. Existen valores universales que, aplicados para todas las personas, ayudan a la convivencia pacífica. Uno de los valores fundamentales es la…
Read more →El Iztaccíhuatl es la montaña más importante en México para investigar los avances y retrocesos que han tenido los glaciares en los últimos miles de años. Allí se han encontrado las huellas de la glaciación más antigua ocurrida en México,…
Read more →La Revolución empezó el 20 de Noviembre de 1910. Don Francisco I. Madero en 1909 promovió el Partido Antireeleccionista e inició el movimiento armado ese día pugnanado por el “Sufragio Efectivo no Reelección” y murió por la causa de la…
Read more →Read this excerpt from the text. Anish Tuteja studies lotus leaves and other structures in nature to A manage marine life and protect oceans from contamination. B predict the impact of rain on the natural environment. C design fabrics…
Read more →Choose sentence in this paragraph that best shows how super-repellent fabric would protect a scientist who works with dangerous liquids. Such a super-repellent fabric could make stain-free clothing that keeps people not just clean but…
Read more →Which two of the following places would you be most likely to find the fog-fighting coating developed by Rubner’s team? A on the bottom of a ship B on the lens of a telescope C on the outside of a molecule D on the coating of power lines…
Read more →Read this excerpt from the text. Which word in this excerpt is the scientific term for “super-repellent”? A materials B phobia C structure D omniphobic
Read more →This selection about scientists who are developing super-repellent surfaces is an example of A informational writing. B persuasive writing. C narrative writing. D argumentative writing.
Read more →The Michigan researchers developed a mesh fabric that might aid in cleaning up oil spills. This fabric functions for this purpose by: A) allowing water, but not oil, to pass through. B) allowing oil to pass through, but repelling water.…
Read more →How does this image of power lines in a winter storm relate to this selection? A) Super-repellent coatings may solve many problems, such as reducing damage to power lines from ice buildup. B) Super-repellent coatings could prevent power…
Read more →The author wrote this selection most likely to A present and defend an opinion. B provide facts about a real-life topic. C entertain with an exciting story. D describe something in vivid detail.
Read more →Anish Tuteja’s work with developing a super-repellent mesh is inspired by which one of the following? A fuel B the lotus leaf C a record player D ships
Read more →This selection is mainly about how scientists are A engineering ships that can more easily move through the water. B designing surfaces to help more birds develop water repellent coats. C learning from plants and animals to create…
Read more →Even though both Ellie Scotney and Kye Whyte play different sports, they both A had parents who did not want them to become athletes. B wanted to win against their siblings in a competition. C had unhealthy habits as children. D were…
Read more →Based on the selection, the factor that affects Ellie’s ability to fight the most is A her mental confidence. B the support of her coaches. C social interactions with her friends. D her physical fitness.
Read more →Read this excerpt from the beginning of the selection. The author most likely included this part to A explain to the reader how to become a professional athlete. B help the reader make a connection between something familiar and something…
Read more →Which is represented by the image? o smooth muscle o cardiac muscle o actin and myosin activated o sacromere and tendon
Read more →The scientists built a platform for Whittles because A dolphins like to perform on a platform. B the dolphin rarely came to the surface to get air. C the dolphin needed to get some sun. D it would make it easier to feed the dolphin.
Read more →