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Questions in Grade High-school

📝 Answered - Which of the following is true of a human karyotype? A. Each cell has 22 pairs of homologous chromosomes. B. Each cell has one pair of sex chromosomes. C. The chromosomes are numbered in order from 1 to 22. D. All of the above are true.

📝 Answered - Can you give examples of carbon in our nonliving environment?

📝 Answered - Jaiden is writing a report about the structure of the atom. In her report, she says that the atom has three main parts and two subatomic particles. Do you agree with her? Why or why not?

📝 Answered - In the lock-and-key model of enzyme action, the _______________ fits into _______ of the enzyme. A. product, substrate B. active site, product C. substrate, active site D. active site, substrate

📝 Answered - A woman treated her home with a pesticide that kills spiders. The first application killed 78% of the spiders. Two months later, she applied the pesticide again, but it only killed 45% of the spiders. What would best explain the decrease in the effectiveness of the pesticide?

📝 Answered - Which phrase best describes DNA? A. The structure that allows biochemical reactions to occur B. The structure that translates information into action C. The molecule that contains all the genetic material D. The molecule that breaks down sugars in the cell

📝 Answered - Earthquakes happen when _____. A. magma fills the chamber in a mountain B. seismic waves are transferred from the ocean floor to ocean water C. tectonic plates suddenly move past one another D. rocks are broken down and transported from one place to another

📝 Answered - The vast grasslands that border the great desert region of the Sahara are known as: A. savannahs B. jungles C. wetlands D. meoris E. transvaals

📝 Answered - Jennifer and Jessica come up with different answers to the same problem...

📝 Answered - Multicellular plants and animals have organs to perform specific functions. What do eukaryotic cells have to perform specific functions? A. ribosomes B. organelles C. cytoplasm D. vacuole