Question

1. The preferred state for DNA in biological systems is to be in the ________ state...

1. The preferred state for DNA in biological systems is to be in the ________ state so that DNA denaturation for replication and transcription is therefor easier. (Choose one or more answers)

A. Denatured

B. Relaxed

C. Positive supercoiled

D. Negative supercoiled

2. Place the following chromatin structures in order from LEAST complex to MOST complex

A. Chromosome

B. Nucleosome

C. Double Helix

D. 30nm fiber

3. Match the phrase with the molecule(s) from the list: 1. DNA only, 2. RNA only, 3. DNA and RNA,4. Protein only, 5. DNA and protein, 6. RNA and protein, 7. all three: DNA, RNA, and protein, 8. None of the three: DNA, RNA, and protein

1. Made up to 2' deoxyribonucleotides

2. Made up of ribonucleotides

3. Produced in the process of transcription

4. Made of amino acids

5. Produced in the process of translation

6. Produced in the process of replication

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Homework Answers

Answer #1

1. Negative supercoiled.

The preferred state of DNA is negative supercoiling beacuse it is easier to unwind whereas positive supercoiling is condensed and thus difficult to unwind. Unwinding is required for replication and transcription.

2. 30 nm fiber, nucleosome, double helix, chromosome

3.

1. DNA only

DNA is made up of deoxyribonucleotides.

2. RNA only

RNA is made up of ribonucleotides.

3. RNA only

It is the product in the process of transcription.

4. Protein only

Proteins are made up of amino acids.

5. Protein only

Protein is produced in the process of translation.

6. DNA only

Only DNA can be replicated in human.

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