Question

The endomembrane system includes:
Endoplasmic reticulum (ER)
Golgi complex
Lysosomes
Vacuoles

• A. Only ER and Golgi complex
• B. Only lysosomes and vacuoles
• C. All of the above
• D. None of the above

Hint:

The endomembrane system includes organelles and structures involved in the synthesis, modification, and transport of cellular materials such as proteins and lipids.

Answer 1

The Correct Option is C

Step 1: Understand the endomembrane system
The endomembrane system is a network of membranous organelles in eukaryotic cells that work together to modify, sort, and transport proteins and lipids. Key components include:
Endoplasmic Reticulum (ER) – involved in protein and lipid synthesis.
Golgi complex – modifies, sorts, and packages molecules.
Lysosomes – contain digestive enzymes for breaking down cellular waste.
Vacuoles – store water, nutrients, and waste materials.
Nuclear envelope – surrounds the nucleus and regulates molecular exchange.
Transport vesicles – move materials between different parts of the system.
Step 2: Analyze the given components
The question lists the following:
Endoplasmic Reticulum (ER) – This is part of the endomembrane system.
Golgi complex – This is part of the endomembrane system.
Lysosomes – These are derived from the Golgi complex and are included.
Vacuoles – These are considered part of the endomembrane system. All four are integral parts of the endomembrane system.
Step 3: Evaluate each option (A) Only ER and Golgi complex
This is incorrect as it excludes lysosomes and vacuoles. (B) Only lysosomes and vacuoles
Also incorrect — it omits the ER and Golgi complex. (C) All of the above
This is correct — all listed structures are part of the endomembrane system. (D) None of the above
Incorrect — all the listed components are valid parts of the system. Step 4: Conclusion All the listed structures are part of the endomembrane system. $$ (C) All of the above $$