BIOL 214

BIOL 214 Final Exam 2020/2021 Questions and Answers 1. Figure 1 is a two base pair of DNA a. Identify W – Guanine (purine acceptable) b. Identify Y – deoxyribose sugar c. Identify Z - phosphate d. Which direction is the left hand strand orientated, top to bottom? 5’ to 3’ e. Identify one mistake evident in this drawing. No -OH groups on 3’ ends; N bases are not attached to 1’ carbon on sugar 2. Strains of E. coli have been isolated that contain temperature-sen...

BIOL 214 Exam 3 2020/2021 Questions and Answers 1. The lactose operon is likely to be transcribed at a maximum rate when A) there is more glucose in the cell than lactose. B) the cyclic AMP levels are low. C) there is glucose but no lactose in the cell. D) the cyclic AMP and lactose levels are both high within the cell. E) the cAMP level is high and the lactose level is low. 2. Transcription of the structural genes in an inducible operon A) occurs continuously in the cell. B) starts w...

BIOL 214 Exam 2 2020/2021 Questions and Answers 1. A homologous chromosome pair is best described as two chromosomes having . a. the same genes in the same order but possibly having different alleles of those genes b. the same alleles of the same genes in the same order c. the same alleles of the same genes in a different order d. different alleles of the same genes arranged in a different order e. identical DNA sequences 2. What is the difference between sister chromatids before and af...

BIOL 214 Exam 1 2020/2021 1. Define evolution a. Transmutation b. Change over time c. Descent with modification d. Heritable change in phenotype of a population over generations. 2. During a study session about evolution, your study partner remarks, "The giraffe stretched its neck while reaching for higher leaves; its offspring inherited longer necks as a result." How should you respond to this student? a. “I agree. You are a genius”. b. “I agree because all adaptations have su...