Causes of tuberculosis. Tuberculosis (TB) is caused by a type of bacterium called Mycobacterium tuberculosis. The condition is spread when a person with an active TB infection in their lungs coughs or sneezes and someone else inhales the expelled droplets, which contain TB bacteria.Although it is spread in a similar way to a cold or the flu, TB is not as contagious.owever, in some cases the bacteria infect the body but don't cause any symptoms (latent TB), or the infection begins to cause symptoms within weeks or months (active TB).
These 10 animal facts will amaze you. A unicellular organism is any life form that consists of just a single cell. This group includes most life on Earth, with bacteria serving as the majority. The main groups of single celled life are bacteria, archaea (both prokaryotes), and the eukaryota (eukaryotes).
Rating Newest Oldest. Best Answer: Unicellular protists are single celled organisms. This means that in that single cell, all the process of life must be able to occur. The one cell does everything multiple cells in multicellular organisms do.eport Abuse. though unicellular organisms are made of only one cell...they can carry out Allprocesses of life. This differs in multicellular organisms as there is sspecializationof cells after ddifferentiation A muscle fiber for example cannot live without supply of oxygen from erythrocytes.