Cell - the structural and functional unit of life Flashcards
What are unicellular organisms?
living organisms made up of only single cell are called unicellular organisms.
Examples: Amoeba, Paramecium, Bacteria,Chlamydomonas.
What are multicellular organisms?
living organisms made up of millions or billions of cells are called multicellular organisms.
Examples: Volvox, Rose, Mosquito, Mango, Humans.
What is the shape of red blood cells?
Red blood cells are circular and biconcave.
Why red blood cells are circular and biconcave?
For easy passage through blood capillaries and to transport oxygen.
What is the smallest cell?
smallest cell are :
bacteria, red blood cells in human body.
What is the longest cells?
Nerve cells.
What is the largest cell?
Bird eggs, ostrich eggs.
What is the shape of white blood cells?
Amoeboid
Why are nerve cells long?
To conduct “impulse” from distant parts of the body to the brain and vice-versa.
What is cell membrane made up of ?
Lipoproteins.
Use of cell membrane is
It provides flexibility to the cells
What is the outer most layer of a cell called?
Cell wall.
What is the cell wall made up of?
cellulose
use of cell wall is
It gives a define shape and rigidity to the cell.
