Identify the components labelled A, B, C and D in the diagram below from the list 1 to 8 given along with 1.…
Identify the components labelled A, B, C and D in the diagram below from the list 1 to 8 given along with
1. Cristae of mitochondria
2. Inner membrane of mitochondria
3. Cytoplasm
4. Smooth endoplasmic reticulum
5. Rough endoplasmic reticulum
6. Mitochondrial matrix
7. Cell vacuole
8. Nucleus
(a)
(b)
(c)
(d)
Solution
In the diagram given in the question, A represents the structure of the rough endoplasmic reticulum (RER). RER is recognized easily because it is associated with the small dense granules called ribosomes, along the outer border of its membrane.
ER in some types not associated with the ribosome (represented by B) hence called the smooth endoplasmic reticulum.
C represents the structure of the nucleus surrounded by a nuclear envelope. The cytoplasm is defined as the jelly-like fluid, specifically the protoplasmic fluid which surrounds the nucleus, represented by structure D.
