Answer the following question given this paragraph: The respiratory system is the body system that exchanges gases with the outside air. It brings air containing oxygen into the body for the cells. It also releases carbon dioxide from the cells into the air. This exchange of gases is called respiration. Q: Which system in the body exchanges gases with the outside air? Choices: - immune - digestive - vascular - respiratory A:
respiratory
Answer the following question given this paragraph: Monotremes can lay eggs, but most mammals give birth to live young. Q: While most mammals give birth to live young, monotremes can do what? Choices: - reproduce asexually - adopt offspring - steal eggs - lay eggs A:
lay eggs
Q: Answer the following question given this paragraph: Compact bone makes up the dense outer layer of bone. Its functional unit is the osteon . Compact bone is very hard and strong. Q: What is the functional unit of compact bone? Choices: - spongin - collagen - scleroprotein - osteon A:
A: osteon
Question: Answer the following question given this paragraph: Summary A suspension is a heterogeneous mixture of particles of one substance distributed throughout a second phase; the dispersed particles separate from the dispersing phase on standing. In contrast, the particles in a colloid are smaller and do not separate on standing. A colloid can be classified as a sol, a dispersion of solid particles in a liquid or solid; a gel, a semisolid sol in which all of the liquid phase has been absorbed by the solid particles; an aerosol, a dispersion of solid or liquid particles in a gas; or an emulsion, a dispersion of one liquid phase in another. A colloid can be distinguished from a true solution by its ability to scatter a beam of light, known as the Tyndall effect. Hydrophilic colloids contain an outer shell of groups that interact favorably with water, whereas hydrophobic colloids have an outer surface with little affinity for water. Emulsions are prepared by dispersing a hydrophobic liquid in water. In the absence of a dispersed hydrophobic liquid phase, solutions of detergents in water form organized spherical aggregates calledmicelles. Phospholipids are a class of detergent-like molecules that have two Saylor URL: http://www. saylor. org/books. Q: A heterogeneous mixture of particles of one substance distributed throughout a second substance in a different phase is known as what? Choices: - disruption - solution - fluid - suspension A:
Answer: suspension
*Question*
Answer the following question given this paragraph: Genetics is the study of inheritance. Inheritance is the passing of traits from parents to offspring. How are these traits "passed"? Through DNA, which is the genetic material of all organisms. This concept will focus on genetics, inheritance, and DNA. Q: The passing of traits from parents to offspring is done through what? Choices: - sperm - egg - blood - dna A:
**Answer**
dna
Q: Answer the following question given this paragraph: All alkanes are composed of carbon and hydrogen atoms, and have similar bonds, structures, and formulas; noncyclic alkanes all have a formula of CnH2n+2. The number of carbon atoms present in an alkane has no limit. Greater numbers of atoms in the molecules will lead to stronger intermolecular attractions (dispersion forces) and correspondingly different physical properties of the molecules. Properties such as melting point and boiling point (Table 20.1) usually change smoothly and predictably as the number of carbon and hydrogen atoms in the molecules change. Properties of Some Alkanes[3] Alkane. Q: All alkanes are composed of carbon and hydrogen atoms, and have similar bonds, structures, and formulas; noncyclic alkanes all have a formula of cnh2n+2. the number of carbon atoms present in an alkane has what? Choices: - done limit - crippling limit - such limit - no limit A:
A: no limit