Answer the following question given this paragraph: The anodes in each cell of a rechargeable battery are plates or grids of lead containing spongy lead metal, while the cathodes are similar grids containing powdered lead dioxide (PbO2). The electrolyte is an aqueous solution of sulfuric acid. The value of E for such a cell is about 2 V. Connecting three such cells in series produces a 6 V battery, whereas a typical 12 V car battery contains six cells in series. When treated properly, this type of high-capacity battery can be discharged and recharged many times over. As the cell is discharged, a powder of PbSO4 forms on the electrodes. Moreover, sulfuric acid is consumed and water is produced, decreasing the density of the electrolyte and providing a convenient way of monitoring the status of a battery by simply measuring the density of the electrolyte. Q: The anodes in each cell of a rechargeable battery are plates or grids of lead containing spongy lead metal, while the cathodes are similar grids containing powdered what? Choices: - carbon dioxide - straight dioxide - coal - lead dioxide A:
lead dioxide
(Question)
Answer the following question given this paragraph: Reading the Genetic Code. The genetic code is read three bases at a time. Codons are the code words of the genetic code. Which amino acid does codon 2 in the drawing stand for?. Q: What are the "code words" of the genetic code? Choices: - nucleotides - lipids - polymers - codons A:
(Answer)
codons
Ques: Answer the following question given this paragraph: The thermosphere is the layer above the mesosphere. It rises to 600 kilometers (372 miles) above the surface. The International Space Station and other space stations orbit Earth in this layer. Q: What is the name of the layer above the mesosphere? Choices: - exosphere - lithosphere - intersphere - thermosphere A:
Ans: thermosphere
(Q).
Answer the following question given this paragraph: Formed when elements either gain or lose electrons. Q: What is the most important factor determining soil type? Choices: - landscape - plant life - ecology - climate A:
(A).
climate
Ques:Answer the following question given this paragraph: Various studies were done on the effects of temperature changes on both pressure and volume by two prominent French scientists, Jacques Charles (1746-1823) and Joseph Louis Gay-Lussac (1778-1850). In 1802, Charles and Gay-Lussac both proposed that for a fixed amount of gas at a constant pressure, the volume is directly proportional to its absolute temperature (V T). Figure below illustrates the volume-temperature relationship. Q: In 1802, charles and gay-lussac both proposed that for a fixed amount of gas at a constant pressure, what is directly proportional to its absolute temperature? Choices: - air - liquid - density - volume A:

Ans:volume
Question: Answer the following question given this paragraph: Cell division is simpler in prokaryotes than eukaryotes because prokaryotic cells themselves are simpler. Prokaryotic cells have a single circular chromosome, no nucleus, and few other organelles. Eukaryotic cells, in contrast, have multiple chromosomes contained within a nucleus, and many other organelles. All of these cell parts must be duplicated and then separated when the cell divides. A chromosome is a molecule of DNA, and will be the focus of a subsequent concept. Q: What important organelle (that would otherwise be centrally located and crucial to the cell's survival) do prokaryotic cells lack? Choices: - electrons - molecules - protons - nucleus A:
Answer:
nucleus