Molecular Dynamics Exam: Key Concepts and Calculations Guide
School
Colorado State University, Global Campus**We aren't endorsed by this school
Course
BIO 206
Subject
Biology
Date
Dec 10, 2024
Pages
2
Uploaded by ChefGrouseMaster1191
**Name of the Exam: Molecular Dynamics and Ecological Interplay****Date: February 24, 2023****Total Time: 2 hours****Total Score: 100 points**---**Instructions:**1. Answer all questions to the best of your ability.2. Multiple-choice questions are worth 2 points each. There is only one correct answer.3. Solution questions are worth 5 points each.4. Calculation questions are worth 8 points each.5. All calculations should be clearly shown. Please use a separate sheet of paper if needed.6. Graphs and charts should be well-labeled and neat.---**Section A: Multiple Choice (20%)**1. Which of the following processes involves the separation of DNA strands during replication?a) DNA polymerase activityb) DNA gyrase activityc) Helicase activityd) Topoisomerase activity2. The process of DNA transcription in prokaryotes is different from that in eukaryotes because:a) Prokaryotes lack a nucleus.b) Eukaryotes use RNA polymerase III.c) Prokaryotes require a promoter.d) Eukaryotes utilize introns.3. Which organelle is primarily responsible for the synthesis of ATP in the cell?a) Chloroplastsb) Mitochondriac) Endoplasmic reticulumd) Golgi apparatus
4. In a typical eukaryotic cell, which of the following would you expect to see?a) Cell wallb) Nucleusc) Circular DNAd) No organelles5. The ability of a cell to respond to chemical signals depends on:a) The length of the signaling pathway.b) The permeability of the cell membrane.c) The presence of receptor proteins.d) The availability of ATP in the cell.---**Section B: Short Answer Questions (30%)**6. Describe the central dogma of molecular biology and explain how it relates to the flow of genetic information in cells.7. Discuss the significance of biodiversity in an ecosystem and outline the factors that contribute to maintaining it.8. Explain the concept of gene regulation and describe the steps involved in controlling geneexpression in eukaryotic cells.---**Section C: Calculation Questions (50%)**9. Given a population of 1000 organisms, 20% of which carry a recessive allele for a particular trait. Calculate the frequency of the recessive allele in the population.10. If a gene has two alleles, A and a, with A being dominant, and you have a population where 60% of the individuals are heterozygous (Aa) and 20% are homozygous dominant (AA), what is the frequency of the recessive allele (a)?11. A DNA fragment of 200 base pairs is undergoing replication. The rate of replication is 50base pairs per minute. How long will it take for the entire fragment to replicate?---**End of Exam**