A is Rough endoplasmic reticulum (v), B is Smooth endoplasmic reticulum (iv), C is Nucleus (viii), D is Cytoplasm (iii).
Plasma membrane comprises of mainly proteins embedded in a phospholipid bilayer.
Protein molecules occur at places both inside and outer side of the lipid bilayer.
Mitochondria has its own DNA.
It is a structure within cytoplasm of eukaryotic cells that carries out aerobic respiration.
It is the site of Krebs cycle and ETS.
Cytoplasm is granular, crystallo-colloidal complex that forms the living protoplasm of a cell excluding its nucleus.
It is the main area for various types of activities of a cell like respiration, nutrition, storage, etc.
Plasmodesmata are the structures present between two adjacent cells that permits the transport and communication between them.
They are fine cytoplasmic strands that connect the protoplasts of adjacent plant cells by passing through the cell walls.
Plasmodesmata are connections between adjacent cells.
They are narrow channels that act as intercellular cytoplasmic bridges to facilitate communication and transport of materials between plant cells.
The main proteins present in the cytoskeleton are tubulin (in microtubules), actin, myosin, tropomyosin (in microfilaments) and keratins, vimentin, desmin, lamin (in intermediate filaments).
Middle lamella is mainly composed of calcium pectate.
Calcium is deposited in plant cell walls during their formation acting as a cementing agent binding adjacent cells together.
In germinating seeds, fatty acids are degraded exclusively in the glyoxysomes where the glyoxylate cycle occurs.
The two subunits of ribosome remain united at a critical ion level of magnesium.
If magnesium is absent in the medium, the large particles fall apart to display a group of smaller particles.
