Answer the following question given this paragraph: The organs of the digestive system are lined with muscles. The muscles contract, or tighten, to push food through the system ( Figure below ). The muscles contract in waves. The waves pass through the digestive system like waves through a slinky. This movement of muscle contractions is called peristalsis . Without peristalsis, food would not be able to move through the digestive system. Peristalsis is an involuntary process, which means that it occurs without your conscious control. Q: What is the movement of muscle in the digestive system called? Choices: - acid reflux - labor contractions - apoptosis - peristalsis A:
peristalsis
Answer the following question given this paragraph: Q: How many different types of taste can be detected by taste buds? Choices: - three - two - hundreds - five A:
five
Q: Answer the following question given this paragraph: Q: Which action of the stomach helps chemical digestion by gastric juice? Choices: - peristalsis - chewing - contraction - churning action A:
A: churning action
Question: Answer the following question given this paragraph: The amount of reactants and products do not have to be equal. However, after equilibrium is attained, the amounts of reactants and products will be constant. Q: In a chemical reaction, the amounts of reactants and products will be constant when what state is attained? Choices: - saturation - peak - homogeneity - equilibrium A:
Answer: equilibrium
*Question*
Answer the following question given this paragraph: Heavier isotopes of plutoniumPu-240, Pu-241, and Pu-242are also produced when lighter plutonium nuclei capture neutrons. Some of this highly radioactive plutonium is used to produce military weapons, and the rest presents a serious storage problem because they have half-lives from thousands to hundreds of thousands of years. Although they have not been prepared in the same quantity as plutonium, many other synthetic nuclei have been produced. Nuclear medicine has developed from the ability to convert atoms of one type into other types of atoms. Radioactive isotopes of several dozen elements are currently used for medical applications. The radiation produced by their decay is used to image or treat various organs or portions of the body, among other uses. The elements beyond element 92 (uranium) are called transuranium elements. As of this writing, 22 transuranium elements have been produced and officially recognized by IUPAC; several other elements have formation claims that are waiting for approval. Some of these elements are shown in Table 21.3. Preparation of Some of the Transuranium Elements Name. Q: Heavier isotopes of plutonium are also produced when lighter plutonium nuclei capture what? Choices: - protons - electrons - molecules - neutrons A:
**Answer**
neutrons
Q: Answer the following question given this paragraph: Some of the pollutants from fossil fuels can be filtered out of exhaust before it is released into the air ( Figure below ). Other pollutants can be changed to harmless compounds before they are released. Two widely used technologies are scrubbers and catalytic converters. Q: Scrubbers and catalytic converters are examples of technologies that change what into harmless compounds? Choices: - contaminants - toxins - mutations - pollutants A:
A: pollutants