Q: What are known as the building blocks of proteins? Read this paragraph and choose the correct option from the provided answers: Introduction Since the rediscovery of Mendel's work in 1900, the definition of the gene has progressed from an abstract unit of heredity to a tangible molecular entity capable of replication, expression, and mutation (Figure 15.1). Genes are composed of DNA and are linearly arranged on chromosomes. Genes specify the sequences of amino acids, which are the building blocks of proteins. In turn, proteins are responsible for orchestrating nearly every function of the cell. Both genes and the proteins they encode are absolutely essential to life as we know it. Choices: - organism acids - protein acids - bases - amino acids A:
amino acids

Q: Why do electronegativities decrease from top to bottom? Read this paragraph and choose the correct option from the provided answers: Electronegativities generally increase from left to right across a period. This is due to an increase in nuclear charge because of the greater number of protons in the nucleus. Alkali metals have the lowest electronegativities, while halogens have the highest. Because most noble gases do not form compounds, they are generally not assigned electronegativity values. Note that there is little variation among the transition metals. Electronegativities generally decrease from top to bottom within a group due to the larger atomic size. Choices: - smaller atomic size - larger atomic variation - larger electric pull - larger atomic size A:
larger atomic size

Q: The extent to which a substance may be dissolved in water or another solvent is known as what? Read this paragraph and choose the correct option from the provided answers: The extent to which a substance may be dissolved in water, or any solvent, is quantitatively expressed as its solubility, defined as the maximum concentration of a substance that can be achieved under specified conditions. Substances with relatively large solubilities are said to be soluble. A substance will precipitate when solution conditions are such that its concentration exceeds its solubility. Substances with relatively low solubilities are said to be insoluble, and these are the substances that readily precipitate from solution. More information on these important concepts is provided in the text chapter on solutions. For purposes of predicting the identities of solids formed by precipitation reactions, one may simply refer to patterns of solubility that have been observed for many ionic compounds (Table 4.1). Solubilities of Common Ionic Compounds in Water Soluble compounds contain group 1 metal cations (Li+, Na+, K+, Rb+, and Cs+). Choices: - humidity - flexibility - turbidity - solubility A:
solubility

Q: On a hot, dry day, plants close their stomata to conserve what? Read this paragraph and choose the correct option from the provided answers: ART CONNECTION QUESTIONS 1. Figure 5.7 On a hot, dry day, plants close their stomata to conserve water. What impact will this have on photosynthesis?. Choices: - sunlight - air - cold - water A:
water