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Question
Biology
Three of the following statements regarding cell organelles are correct while one is wrong. Which one is wrong?
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Q. Three of the following statements regarding cell organelles are correct while one is wrong. Which one is wrong?
AIIMS
AIIMS 2005
Cell : The Unit of Life
A
Lysosomes are double membraned vesicles budded off from Golgi apparatus and contain digestive enzymes
53%
B
Endoplasmic reticulum consists of a network of membranous tubules and helps in transport, synthesis and secretion
12%
C
Leucoplasts are bound by two membranes, lack pigment but contain their own DNA and protein synthesizing machinery
20%
D
Sphaerosomes are single membrane bound and are associated with synthesis and storage of lipids
15%
Solution:
Double membranes are absent in lysosomes. They are enclosed by single lipoproteinaceous unit membrane. Lysosome is called 'suicidal bag' of the cell due to presence of hydrolytic enzymes.