Nursing Preparation Study Guide

Nursing Preparation Study Guide

Chapter 9 Review Questions 1. A solution with a pH value more than seven is considered a ______. a. Base b. Acid c. Neutral d. None of the above 2. Describe the periodic table. a. The periodic table is a tabular display of the chemical compounds organized according to their electron configurations, atomic numbers, and recurring chemical properties. b. The periodic table is a tabular display of the chemical elements that is organized based on their atomic numbers, electron configurations, and recurring chemical properties. c. The periodic table is a tabular display of the chemical subatomic particles, which is organized on the basis of their atomic numbers, electron configurations, and recurring chemical properties. d. None of the above. 3. Which, if any, of the following statements are false? a. A mutation is a permanent change in the DNA sequence of a gene. b. Mutations in a gene’s DNA sequence can alter the amino acid sequence of the protein encoded by the gene.

c. Mutations in DNA sequences usually occur spontaneously. d. Mutations in DNA sequences are caused by exposure to environmental agents, such as sunshine. 4. Describe the differences between genotypes and phenotypes. a. Phenotype refers to the observed properties of an organism and genotype refers to the genes of an organism. b. Genotype refers to the observed properties of an organism and phenotype refers to the genes of an organism. c. Phenotype refers to the DNA of an organism and genotype refers to the genes of an organism. d. Genotype refers to the DNA of an organism and phenotype refers to the genes of an organism. 5. A _________ is an approximation or simulation of a real system that omits all but the most essential variables of the system. a. Scientific method b. Independent variable c. Control group d. Scientific model

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