QQuestionBiology
QuestionBiology
"In plant cells, what structures contain DNA?
A. Nucleus, central vacuole, and mitochondria
B. Nucleus, mitochondria, and chloroplasts
C. Nucleus, mitochondria, and rough ER
D. Nucleus, mitochondria, and smooth ER"
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Answer
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Step 1:Let's solve this step by step:
Step 2:: Understand the Question
The problem asks about which cellular structures in plant cells contain DNA. This requires knowledge of plant cell organelles and their genetic material.
Step 3:: Analyze the Cellular Structures
- Nucleus: Always contains DNA (genetic material of the cell) - Mitochondria: Contains its own circular DNA - Chloroplasts: Contains its own circular DNA - Rough ER: Does not contain DNA - Smooth ER: Does not contain DNA - Central vacuole: Does not contain DNA
Step 4:: Identify the Correct Answer
By carefully examining the options and comparing them to known cellular biology, the correct answer is: B. Nucleus, mitochondria, and chloroplasts
Step 5:: Explanation of the Answer
- The nucleus contains the cell's primary genetic material (chromosomal DNA) - Mitochondria have their own small circular DNA genome - Chloroplasts also have their own small circular DNA genome - These organelles are unique in having their own genetic material within plant cells
Final Answer
Nucleus, mitochondria, and chloroplasts
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