Cell Biology and Structure

In unicellular organisms like protozoa (e.g., Amoeba), food vacuoles are responsible for digesting food through intracellular digestion. This is analogous to how multicellular organisms have entire digestive systems to break down food.

These are lipids containing a phosphate group. A phospholipid molecule has a strongly nonpolar and hydrophobic (water insoluble) tail region represented by fatty acid chains and a strongly polar or hydrophilic (water soluble) head region represented by the phosphate group. Such an arrangement forms a basic component of plasma membranes.

 Conversion of carbohydrates into amino acids in plants occur in mitochondria.

  In sieve tube cells, golgi complex is absent. The main function of the sieve tube is transport of carbohydrates, primarily sucrose, in the plant (e.g., from the leaves to the fruits and roots).

The cells that are rigid and full of water are called turgid.

These are the cell organelles derived from endoplasmic reticulum and are involved in storage and synthesis of fat.

It is involved in storage and synthesis of fat.

An uncoupling protein is a mitochondrial inner membrane protein that can dissipate the proton gradient before it can be used to provide the energy for oxidative phosphorylation.

A galvanic cell, derives electrical energy from chemical reactions taking place within the cell. It generally consists of two different metals connected by a salt bridge, or individual half-cells separated by a porous membrane.

Yes, planaria shows the process of regeneration.

An inducible gene is a gene whose expression is either susceptible to environmental change or dependent on the position in the cell cycle.

Immunohistochemistry or IHC refers to the process of detecting antigens (e.g., proteins) in cells of a tissue section by exploiting the principle of antibodies binding specifically to antigens in biological tissues. IHC takes its name from the roots immuno, in reference to antibodies used in the procedure, and histo, meaning tissue (compare to immunocytochemistry).

Acrosome is formed of the golgi complex.

Nebenkern consists of mitochondrial sheath.

Neurocan core protein is a protein that in humans is encoded by the NCAN gene. Neurocan is a chondroitin sulphate proteoglycan consisting of neurocan and chondroitin sulphate. It is thought to be involved in the modulation of cell adhesion and migration.