Question

which phrase best describes dna?

a. a single-stranded molecule that manages the production of proteins
b. all of the genetic material in an organism
c. a double-stranded molecule that carries genetic information
d. a version of a gene that codes for a specific trait

Explanation:

<pre_analysis>
{
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"skills_matched": [
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"multiple_choice_formatter",
"explain_then_answer",
"quick"
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"needs_drawing": false,
"concepts_used": [
"DNA Structure"
],
"new_concepts": [],
"current_concepts": [
"DNA Structure",
"Genetics"
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</pre_analysis>

<reasoning>

Analyze the definition of DNA

DNA (deoxyribonucleic acid) is a double-stranded nucleic acid molecule that stores and transmits hereditary genetic information in living organisms.

Evaluate the given options

• A describes RNA (single-stranded, manages protein production).
• B describes the genome (all genetic material).
• C accurately describes DNA as a double-stranded molecule carrying genetic information.
• D describes an allele (a version of a gene).

</reasoning>

<answer>
<mcq-option>A. A single-stranded molecule that manages the production of proteins</mcq-option>
<mcq-option>B. All of the genetic material in an organism</mcq-option>
<mcq-correct>C. A double-stranded molecule that carries genetic information</mcq-correct>
<mcq-option>D. A version of a gene that codes for a specific trait</mcq-option>
</answer>

<post_analysis>
{
"subject": "Natural Science",
"question_type": "Multiple Choice",
"knowledge_point": [
"Natural Science",
"Biology",
"DNA Structure"
]
}
</post_analysis>

Answer:

<pre_analysis>
{
"quality": "clear",
"question_count": 1,
"skills_matched": [
"direct_cot",
"multiple_choice_formatter",
"explain_then_answer",
"quick"
],
"needs_drawing": false,
"concepts_used": [
"DNA Structure"
],
"new_concepts": [],
"current_concepts": [
"DNA Structure",
"Genetics"
]
}
</pre_analysis>

<reasoning>

Analyze the definition of DNA

DNA (deoxyribonucleic acid) is a double-stranded nucleic acid molecule that stores and transmits hereditary genetic information in living organisms.

Evaluate the given options

• A describes RNA (single-stranded, manages protein production).
• B describes the genome (all genetic material).
• C accurately describes DNA as a double-stranded molecule carrying genetic information.
• D describes an allele (a version of a gene).

</reasoning>

<answer>
<mcq-option>A. A single-stranded molecule that manages the production of proteins</mcq-option>
<mcq-option>B. All of the genetic material in an organism</mcq-option>
<mcq-correct>C. A double-stranded molecule that carries genetic information</mcq-correct>
<mcq-option>D. A version of a gene that codes for a specific trait</mcq-option>
</answer>

<post_analysis>
{
"subject": "Natural Science",
"question_type": "Multiple Choice",
"knowledge_point": [
"Natural Science",
"Biology",
"DNA Structure"
]
}
</post_analysis>