Answer the following question given this paragraph: The last two stages of aerobic respiration require oxygen. However, not all organisms live in places where there is a plentiful supply of oxygen. Q: The last two stages of aerobic respiration require what? Choices: - water - carbon - sulfur - oxygen A:
oxygen
(Question)
Answer the following question given this paragraph: The Arrhenius definition of acids and bases is somewhat limited. There are some compounds whose properties suggest that they are either acidic or basic, but which do not qualify according to the Arrhenius definition. An example is ammonia (NH 3 ). Its aqueous solution turns litmus blue, it reacts with acids, and displays all the other properties of a base. However, it does not contain the hydroxide ion. In 1923, a broader definition of acids and bases was independently proposed by Danish chemist Johannes Brnsted (1879-1947) and English chemist Thomas Lowry (1874-1936). A Brnsted-Lowry acid is a molecule or ion that donates a hydrogen ion in a reaction. A Brnsted-Lowry base is a molecule or ion that accepts a hydrogen ion in a reaction. A hydrogen ion is commonly referred to as a proton, and so acids and bases are proton donors and proton acceptors respectively according to the Brnsted-Lowry definition. All substances that are categorized as acids and bases under the Arrhenius definition are also defined as such under the Brnsted-Lowry definition. The new definition, however, includes some substances that are left out according to the Arrhenius definition. Q: Which type of substance is considered a proton donor in a reaction? Choices: - base - carbon - oxygen - acid A:
(Answer)
acid
Ques: Answer the following question given this paragraph: Epistasis is when a gene at one location (locus) alters the phenotypic expression of a gene at another locus. Epistasis takes place when the action of one gene is modified by one or several other genes. These genes are sometimes called modifier genes . The gene whose phenotype is expressed is said to be epistatic , while the phenotype that is altered is said to be hypostatic . Sometimes hypostatic phenotypes are completely suppressed. Epistatic genes are not dominant over the genes they alter or suppress. Dominance refers to an interaction between alleles of the same gene, not different genes. Q: What is it called when a gene at one location (locus) alters the phenotypic expression of a gene at another locus? Choices: - exogenous - epigenesis - spontaneous mutation - epistasis A:
Ans: epistasis
(Q).
Answer the following question given this paragraph: You can follow the operation of an electricity-generating fission reactor in the image above. The reactor core is submerged in a pool of water. The heat from the fission reaction heats the water, which is pumped into a heat exchange container. There the heated water boils the water in the heat exchanger. The produced steam is forced through a turbine that spins a generator and produces electricity. After the water passes through the turbine, it is condensed back to liquid water and pumped back to the heat exchanger. Q: A turbine that spins a generator will produce? Choices: - solar energy - light - magnetic fields - electricity A:
(A).
electricity
Ques:Answer the following question given this paragraph: The anion is the methanoate ion, which is commonly called the formate ion. One reaction to consider is that of a carboxylic acid and an alcohol. When combined under the proper conditions, a water molecule will be removed, and the remaining pieces will combine to form a new functional groupthe ester functional group:. Q: The anion is the methanoate ion, which is commonly called the what? Choices: - isomer - metabolized ion - glutathione ion - formate ion A:

Ans:formate ion
Answer the following question given this paragraph: Q: What do nearly all nonsense mutations lead to ? Choices: - dehydration - downs syndrome - hormone release - nonfunctional proteins A:
nonfunctional proteins