Answer the following question given this paragraph: Emphysema is a disease in which the walls of the alveoli break down so less gas can be exchanged by the lungs. The main symptom of emphysema is shortness of breath. The damage to the alveoli is usually caused by smoking and is permanent. Q: What disease associated with smoking involves breakdown of walls of the alveoli, resulting in less gas exchange by the lungs? Choices: - leukemia - cancer - pneumonia - emphysema A:
emphysema
Answer the following question given this paragraph: Atoms are neither created nor destroyed during a chemical change, but are instead rearranged to yield. Q: What basic units are neither created nor destroyed during a chemical change, but are instead rearranged? Choices: - particles - molecules - Electrons - atoms A:
atoms
Q: Answer the following question given this paragraph: http://www. kentchemistry. com/links/Kinetics/entropy. htm. Q: A small molecule that binds to a larger molecule is known as a? Choices: - lipid - enzyme - oxide - ligand A:
A: ligand
Question: Answer the following question given this paragraph: Q: What sort of issues can be determined by looking for certain particles in amniotic fluid? Choices: - artificial disorders - organic disorders - impossible disorders - genetic disorders A:
Answer: genetic disorders
*Question*
Answer the following question given this paragraph: Sequencing the human genome has increased our knowledge of genetic disorders. Genetic disorders are diseases caused by mutations. Many genetic disorders are caused by mutations in a single gene. Others are caused by abnormal numbers of chromosomes. Q: Genetic disorders are diseases caused by what? Choices: - lesions - environment - traits - mutations A:
**Answer**
mutations
*Question*
Answer the following question given this paragraph: Electronegativity Differences between Metals and Nonmetals An element's electronegativity provides us with a single value that we can use to characterize the chemistry of an element. Elements with a high electronegativity ( 2.2 in Figure 7.15 "Pauling Electronegativity Values of the ") have very negative affinities and large ionization potentials, so they are generally nonmetals and electrical insulators that tend to gain electrons in chemical reactions (i. , they are oxidants). In contrast, elements with a low electronegativity ( 1.8) have electron affinities that have either positive or small negative values and small ionization potentials, so they are generally metals and good electrical conductors that tend to lose their valence electrons in chemical reactions (i. , they are reductants). In between the metals and nonmetals, along the heavy diagonal line running from B to At in Figure 1.24 "The Periodic Table Showing the Elements in Order of Increasing ", is a group of elements with intermediate electronegativities ( ~ 2.0). These are the semimetals, elements that have some of the chemical properties of both nonmetals and metals. The distinction between metals and nonmetals is. Q: What are metals and good electrical conductors that tend to lose their valence electrons in chemical reactions called? Choices: - stable metals - conservants - precious metals - reductants A:
**Answer**
reductants