Q: Q: What are small planets in our solar system called? Read this paragraph and choose the correct option from the provided answers: Eris is the largest known dwarf planet in the solar system. It is 27 percent larger than Pluto ( Figure above ). Like Pluto and Makemake, Eris is in the Kuiper belt. But Eris is about 3 times farther from the Sun than Pluto. Because of its distance, Eris was not discovered until 2005. Early on, it was thought that Eris might be the tenth planet. Its discovery helped astronomers realize that they needed a new definition of "planet. " Eris has a small moon, Dysnomia. Its moon orbits Eris once about every 16 days. Choices: - scrub planets - Tiny planets - light planets - dwarf planets A:
A: dwarf planets

Q: Q: What is the term for when two opposing processes reach the same speed, resulting in no overall change? Read this paragraph and choose the correct option from the provided answers: Imagine you are stranded in a rowboat in the middle of the ocean. Suddenly, your boat springs a small leak, and you need to bail out water. You grab a bucket and begin to bail. After a few minutes, your efforts against the leak keep the water to only about half an inch, but any further bailing doesn't change the water level; the leak brings in as much water as you bail out. You are at equilibrium. Two opposing processes have reached the same speed, and there is no more overall change in the process. Chemical reactions are like that as well. Most of them come to an equilibrium. The actual position of the equilibriumwhether it favors the reactants or the productsis characteristic of a chemical reaction; it is difficult to see just by looking at the balanced chemical equation. But chemistry has tools to help you understand the equilibrium of chemical reactionsthe focus of our study in this chapter. So far in this text, when we present a chemical reaction, we have implicitly assumed that the reaction goes to completion. Indeed, our stoichiometric calculations were based on this; when we asked how much of a product is produced when so much of a reactant reacts, we are assuming that all of a reactant reacts. However, this is usually not the case; many reactions do not go to completion, and many chemists have to deal with that. In this chapter, we will study this phenomenon and see ways in which we can affect the extent of chemical reactions. Choices: - neutralization - acceleration - homeostasis - equilibrium A:
A: equilibrium

Q: Q: Down syndrome is caused by having three copies of what, a condition known as trisomy? Read this paragraph and choose the correct option from the provided answers: Chromosomal Disorders Sometimes a genetic disease is not caused by a mutation in a gene, but by the presence of an incorrect number of chromosomes. For example, Down syndrome is caused by having three copies of chromosome 21. This is known as trisomy 21. The most common cause of trisomy 21 is chromosomal nondisjunction during meiosis. The frequency of nondisjunction events appears to increase with age, so the frequency of bearing a child with Down syndrome increases in women over 36. The age of the father matters less because nondisjunction is much less likely to occur in a sperm than in an egg. Whereas Down syndrome is caused by having three copies of a chromosome, Turner syndrome is caused by having just one copy of the X chromosome. This is known as monosomy. The affected child is always female. Women with Turner syndrome are sterile because their sexual organs do not mature. Choices: - genome - variation - DNA - chromosome A:
A: chromosome

Q: Q: The regulation of gene expression is extremely important during the development of what? Read this paragraph and choose the correct option from the provided answers: 3. Name and describe the division of gymnosperms. Choices: - cells - protein - tissues - organism A:
A: organism