For Professor Ryan

As you complete your weekly reading, answer the questions below.

Please review the following writing guidelines prior to answering the questions:

· For information on how to avoid plagiarism, please visit the Writing Center in the Student Success Center.

Part 1: All life has the universal language of nucleic acids, specifically DNA and RNA. In eukaryotic cells the DNA is organized into chromosomes.

After reading pages 124 –125 in your textbook, state the differences among a chromosome, a chromatid, a sister chromatid, and a centromere.

5 points

Answer:

Type your answer here

Part 2: Each cell comes from a preexisting cell. When a cell produces offspring (called daughter cells) the genetic material of the parent cell needs to duplicate so that it can be passed to both daughter cells.

After reading pages 130 – 131 in your textbook, respond to the following prompts.

20 points

Discuss the function of the enzymes DNA helicase, DNA polymerase, and DNA ligase.

Type your answer here

10 points

Describe the semiconservative replication process of DNA.

Type your answer here

10 points

Part 3: The genetic code of DNA carries instructions for building RNA.

After reading pages 138 – 139 in your textbook, state the purpose of each of the three types of RNA (mRNA, tRNA, rRNA).

10 points

Answer:

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Part 4: The three types of RNA molecules will then be used to assemble a protein.

After reading pages 140 – 145 of your textbook, outline the following.

20 points

Outline the three steps of transcription .

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10 points

Outline the six steps of translation.

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10 points

Part 5: Now that we have knowledge on the steps of taking the genetic code and expressing it by forming a protein, let us put this knowledge into practice.

Using the codon table (figure 9.7, page 42) and after reading pages 46 – 47 in your textbook, complete the following tasks.

15 points

Using the codon table (figure 9.7, page 142) in your textbook, translate the following RNA code into the correct amino acid sequence.

When you reach STOP in the codon table the translation process is halted and no more amino acids are added to the protein AUG-GUC-GAU-AGA-CGU-UCA-UAA.

Type your answer here

5 points

Using the same codon table (figure 9.7, page 142) in your textbook, translate the following RNA code into the correct amino acid sequence.

Notice that a mutation has occurred at the fourth codon AUG-GUC-GAU-UGA-CGU-UCA-UAA.

Type your answer here

5 points

After reading pages 146 – 147 in your textbook, state the type of mutation that occurred in the question above.

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5 points

You will earn additional points if you correctly submit the worksheet to the assignment dropbox.

5 points

You will earn additional points if you use proper sentence structure, grammar and spelling.

5 points