natural science official clep study guide questions with 100% verified answers

Which disease is NOT genetically inherited (A) Tuberculosis (B) Phenylketonuria (C) Huntington disease (D) Cystic fibrosis (E) Tay-Sachs disease - Correct Answers(A) Tuberculosis Which disease can be controlled merely through regulation of diet (A) Tuberculosis (B) Phenylketonuria (C) Huntington disease (D) Cystic fibrosis (E) Tay-Sachs disease - Correct Answers(B) Phenylketonuria As a direct result of photosynthesis, energy is stored in molecules of which of the following? (A) RNA (B) DNA (C) C6H12O6 (glucose) (D) H2O (E) CO2 - Correct Answers(C) C6H12O6 (glucose) A person whose gallbladder has been removed has a decreased ability to store bile and therefore to digest (A) fats (B) starches (C) sugars (D) proteins (E) vitamins - Correct Answers(A) fats Hard water is undesirable and is often softened because hard water (A) is too viscous for regular uses (B) contains trace amounts of toxic substances (C) forms insoluble precipitates when boiled or when used with soap (D) cannot be used efficiently by the body due to dissolved impurities (E) evaporates more rapidly than soft water - Correct Answers(C) forms insoluble precipitates when boiled or when used with soap Which of the following adaptations is more likely to be found in the leaves of desert plants than in those of plants that grow in moist regions? (A) Stomata mostly on upper leaf surface (B) A thin, transparent cuticle (C) A smooth leaf surface free of hairs (D) A thickened epidermis and cuticle (E) A loosely packed mesophyll layer - Correct Answers(D) A thickened epidermis and cuticle The classification characteristics that define the genus of an animal or a plant are usually more general than those defining (A) a class (B) an order (C) a species (D) a family (E) a phylum - Correct Answers(C) a species If all the xylem from a section of tree trunk could be removed, which of the following would most likely happen first? (A) Food could not pass from the leaves to the roots. (B) The roots would be unable to transfer any stored food to the spring buds. (C) The leaves would be unable to get any carbon dioxide. (D) The roots would be unable to store food. (E) The leaves would be unable to get sufficient water. - Correct Answers(E) The leaves would be unable to get sufficient water. Whereas the ultimate source of energy for most organisms is sunlight, the immediate source is (A) chemical (B) electrical (C) thermal (D) gravitational (E) radiant - Correct Answers(A) chemical In embryonic origin, nerve cells are most similar to (A) epidermal cells (B) bone cells (C) red blood cells (D) liver cells (E) reproductive cells - Correct Answers(A) epidermal cells In the name Homo sapiens, the word sapiens refers to the (A) species (B) family