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Pick up the correct answers: 1. Mitoch...

Pick up the correct answers:
1. Mitochondrion contains DNA
2. 70 S ribosomes occur in prokaryotes
3. Ribosomes are made of phospholipids and oligosaccharides.
4. Ribosomes are not found in protista and monera.

A

1,2,3 correct

B

1,2 correct

C

2,4 correct

D

1,3 correct

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to evaluate each of the four statements provided and determine which ones are correct. Let's analyze them step by step: ### Step 1: Evaluate Statement 1 **Statement 1:** Mitochondrion contains DNA. - **Analysis:** Mitochondria are membrane-bound organelles found in eukaryotic cells. They are known to contain their own DNA, which is distinct from the nuclear DNA. This DNA is involved in coding for some of the proteins required for mitochondrial function. - **Conclusion:** This statement is **true**. ### Step 2: Evaluate Statement 2 **Statement 2:** 70 S ribosomes occur in prokaryotes. - **Analysis:** Prokaryotic cells, such as bacteria, contain ribosomes that are classified as 70S. These ribosomes are composed of two subunits: a larger 50S subunit and a smaller 30S subunit. This is in contrast to eukaryotic cells, which have 80S ribosomes. - **Conclusion:** This statement is **true**. ### Step 3: Evaluate Statement 3 **Statement 3:** Ribosomes are made of phospholipids and oligosaccharides. - **Analysis:** Ribosomes are not made of phospholipids and oligosaccharides. Instead, they are primarily composed of ribonucleic acids (RNA) and proteins. The structure of ribosomes is crucial for their function in protein synthesis. - **Conclusion:** This statement is **false**. ### Step 4: Evaluate Statement 4 **Statement 4:** Ribosomes are not found in protista and monera. - **Analysis:** All living organisms, including those in the kingdoms Protista and Monera (which includes bacteria), possess ribosomes. Ribosomes are essential for protein synthesis in all cellular life forms. - **Conclusion:** This statement is **false**. ### Final Conclusion Based on the evaluations: - Statement 1 is **true**. - Statement 2 is **true**. - Statement 3 is **false**. - Statement 4 is **false**. Thus, the correct answers are **1 and 2**.
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