Question

membranous organelles differ from nonmembranous organelles in that membranous organelles are
answer

• always in contact with the cytosol
• usually found close to the nucleus of the cell
• surrounded by lipid membranes that isolate them from the cytosol
• unable to perform functions essential to normal cell maintenance
• i dont know yet

Explanation:

To solve this, we analyze each option:

• Option 1: Membranous organelles are not always in contact with cytosol (they have membranes that isolate them), so this is incorrect.
• Option 2: Their location relative to the nucleus isn't a defining difference between membranous and non - membranous organelles, so this is wrong.
• Option 3: Membranous organelles (like mitochondria, endoplasmic reticulum) are surrounded by lipid membranes. These membranes isolate their internal environment from the cytosol, which is a key difference from non - membranous organelles (like ribosomes) that lack such membranes. This is correct.
• Option 4: Membranous organelles perform essential functions (e.g., mitochondria for energy production), so this is incorrect.
• Option 5: This is not a valid scientific answer.

Answer:

C. surrounded by lipid membranes that isolate them from the cytosol