Answer the following question given this paragraph: pure substance that cannot be broken down into other types of substances. Q: What is a substance that can not be broken down any further into other substances? Choices: - pure molecule - pure material - unbreakable substance - pure substance A:
pure substance
Answer the following question given this paragraph: Q: In heart muscle, what released by neurons activates a signal transduction pathway? Choices: - dopamine - glucose - glutamate - acetylcholine A:
acetylcholine
Q: Answer the following question given this paragraph: Group selection A proposed alternative to inclusive fitness (sometimes known as kin selection) is the concept of group selection. In this type of evolutionary scenario, small groups of organisms of the same species are effectively acting as single (perhaps colonial) organisms. It is the reproductive success of the group (rather than individuals within the group), compared to other groups of the organism that is the basis of selection. Groups that display cooperative and altruistic traits have a selective advantage over groups that do not. Again, the mathematical analysis is similar (and it has been claimed that mathematically group and kin selection are equivalent).169 The costs of a trait must be offset by the benefits, but now the key factor is membership in a particular group (and typically, members of a group tend to be related to one another). The life cycle of the bacterium Myxococcus xanthus provides an example of this type of behavior. When environmental conditions are harsh, the cells aggregate into dense, 100 m diameter, "fruiting bodies", each containing ~100,000 stress resistant spores. When the environment improves, and prey becomes available, the spores are released en mass and return to active life. They move and feed in a cooperative manner through the release of digestive enzymes, which because they are acting in a quorum mode, can reach high levels.170 A well-coordinated group is expected to have a significant reproductive advantage over more anarchic collection of individuals. Q: An alternative to inclusive fitness is group selection, a type of what scenario where small groups of organisms of the same species are effectively acting as single (perhaps colonial) organisms? Choices: - introductory - combination - molecular - evolutionary A:
A: evolutionary
Question: Answer the following question given this paragraph: 16.9 Human genetic disorders Down's Syndrome(Mongolism) Down's Syndrome is usually produced by the nondisjunction of chromosome 21 during oogenesis and sometimes during spermatogenesis. The individual suffering from this type of syndrome has 47 chromosomes instead of the normal 46. The extra chromosome is not a sex chromosome but an autosome. Most cases of mongolism were found to occur in children born by women in their forties. The affected children, called mongoloids, show mental retardation and have a shorter life expectancy. Their most prominent feature is the Mongolian folds in their eyes; hence, the term mongolism. Klinefelter's Syndrome. Q: An individual with down's syndrome has 47 of what instead of the normal 46? Choices: - ribosomes - mitochondria - prokaryotes - chromosomes A:
Answer: chromosomes
*Question*
Answer the following question given this paragraph: An element is a pure substance. It cannot be broken down into other types of substances. Each element is made up of just one type of atom. An atom is the smallest particle of an element that still has the properties of that element. Q: What is the term for the smallest particle of an element that still has the properties of that element? Choices: - nucleus - electron - neutron - atom A:
**Answer**
atom
Answer the following question given this paragraph: Q: What unit of measurement is typically used for rainfall? Choices: - gallons - feet - pounds - inches A:
inches