FSc Notes Biology Part 1 Chapter 4 The Cell Definitions 1st Year Biology Notes Online Taleem Ilmi Hub Class 11
To find other Chapter's Short Questions and Definitions. Please Click Here.
Active transport:
The movement of molecules from lower concentration to higher concentration by the expenditure of energy is called active transport.
Cell:
The cell can be defined as structural and functional unit of life.
Cell theory:
All the living organisms are composed of cells and cell products.
Chloroplast:
The membrane bound structure, containing green pigment is called chloroplast. Present only in plant cells.
Colloidal solution:
The solution in which size of particles of solute is bigger than solution is colloidal solution.
Cytoskeleton:
The cytosol of cytoplasm contains cytoskeletal fabric. The cytoskeleton is composed of microtubules, microfilaments, and intermediate filaments.
Cytosol:
The soluble part of the cytoplasm is called cytosol.
Diffusion:
The movement of molecules form the area of higher concentration to the area of lower concentration is called diffusion.
Endocytosis:
The intake of the food material by in folding of the membrane in the form of vacuole is called endocytosis.
Eukaryotic cell:
These cell contain a definite nucleus. Nuclear membrane is present and chromatin material is bounded by a membrane.
Fluid Mosaic model:
According to this model the proteins do not form a continuous layer. It is not present on the outer surface infact. Proteins are embedded in the lipid bi-layers in a mosaic manner.
Gel:
The viscous colloidal solution is called gel.
Granum:
A granum is pile of thylakoids, stacked on each other like coins.
Magnification:
The magnification of a microscope can be determined by multiplying X value of ocular with X value of the objective. It is the enlargement of object with the use of lenses.
New definition of cell theory:
Living things are chemical organizations. These are composed of cells and capable of reproducing themselves.
Omnis cellula:
All the cells are formed only by the division of previously living cells.
Plastids:
The membranous bound and pigment containing bodies present in the plant are called plastids.
Prokaryotic cell:
It is primitive type of cell in which cell lack definite nucleus and membrane bounded organelles.
Protoplasm:
The living contents (nucleus and cytoplasm) collectively form protoplasm.
Resolution:
The human eye can differentiate between two points. Which are at least 1.0 m apart. This is known as resolution of eye.
Sol:
Non-viscous colloidal solution is called sol.
Storage diseases:
Several congenital diseases are caused due to accumulation of certain substances like glycogen and glycolipids. These are called storage diseases. These are caused by absence of lysosomal enzymes.
Post a Comment