NAS2DNARNAHWSp20

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Tidewater Community College *

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2

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Biology

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Feb 20, 2024

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docx

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3

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NAS 2 Name: Trinity Banks DNA Replication, RNA Transcription and Translation Homework Part A: The picture below illustrates DNA replication. Match each numbered structure on the graphic with the correct term below. Not all numbers will be used. 1 point each A. Leading, continuous strand __7___ B. Helicase __1___ C. Okazaki Fragment ___2__ D. Lagging strand, made in pieces _6____ E. DNA ligase _3____ F. DNA polymerase ___4__ Part B: Answer the following questions in relationship to the graphic on the top of page 2. 1 point each. 1. What process is illustrated in the graphic below? Dna replication 2. In what organelle within the cell does the process take place? The nucleus. 1
3. Name the enzyme (circled in red) that assists in the process of adding bases. Rna polymerase 4. Name the region on the DNA where the enzyme first binds to begin the process. The promoter 5. Name the region on the DNA that identifies the end of the process. 6. Is the entire molecule of DNA utilized in this process or just a section? A section 7. List the three modifications that mRNA undergoes before leaving the nucleus to become a fully functioning molecule. 3 points 1. Initiation 2. Elongation 3. termination 2
Part C: Answer the following questions in relationship to the graphic below. 1 point each. 1. What process is illustrated in the graphic above? elongation 2. Where in the cell (location) does the process take place? cytoplasm 3. Match each numbered structure on the graphic with the correct term. a. Ribosome 1. ___4_ b. mRNA 2. __3__ c. polypeptide 3. __5__ d. amino acid 4. __1__ e. tRNA 5. __2__ 4. There are ____64___ different codons that code for __20___ different amino acids. Amino acids are the building blocks of the ___proteins________. (3 points) 5. After translation, where in the cell (organelle) would the protein go for final modification? The golgi apparatus . 3
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