Cell Biology - Cell Structure

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Q1. What is the function of ribosomes in the cell? (2019)

Solution:

Ribosomes are the sites of protein synthesis, translating messenger RNA into polypeptide chains.

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Q2. Which structure is involved in the synthesis of lipids? (2022)

Solution:

The smooth endoplasmic reticulum (Smooth ER) is involved in the synthesis of lipids and detoxification processes.

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Q3. Which of the following structures is found only in plant cells? (2022)

Solution:

Chloroplasts are found only in plant cells and are responsible for photosynthesis.

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Q4. Which organelle is involved in the synthesis of lipids? (2020)

Solution:

The smooth endoplasmic reticulum is involved in the synthesis of lipids and detoxification processes.

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Q5. Which structure is selectively permeable and regulates the entry and exit of substances in a cell?

Solution:

The plasma membrane is selectively permeable, allowing certain substances to pass while blocking others.

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Q6. Which organelle is known for detoxifying harmful substances in the cell? (2022)

Solution:

Peroxisomes are organelles that detoxify harmful substances and break down fatty acids.

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Q7. Which of the following is NOT a function of the plasma membrane? (2019)

Solution:

The plasma membrane does not produce energy; it primarily functions as a barrier and facilitates transport and communication.

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Q8. What is the primary function of the ribosomes? (2019)

Solution:

Ribosomes are responsible for protein synthesis by translating messenger RNA into polypeptide chains.

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Q9. Which structure is responsible for maintaining the shape of plant cells? (2021)

Solution:

The cell wall provides structural support and maintains the shape of plant cells.

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Q10. Which of the following organelles contains chlorophyll? (2022)

Solution:

Chloroplasts contain chlorophyll, which is essential for photosynthesis in plant cells.