Everyone knows that in the microbiology laboratory there are many bacteria or microorganisms that live in and are used as research samples. For this reason, if you work there, you must use various protective equipment to protect yourself from various dangers of bacterial contamination. The number of activities involving bacteria in the laboratory makes many people have to be careful. One of the activities that is always done there is deteccion de patogenos.
In the microbiology laboratory itself, there are many bacteria that live and are sampled there. Some of the bacteria in the laboratory are
– Heterotrophic bacteria
These bacteria live by getting food in the form of organic substances from their environment because they cannot arrange the organic matter themselves that they need. Organic substances are obtained from the remains of other organisms. Bacteria that get organic substances from waste, dirt, carcasses and food scraps, we call saprophytic bacteria. These bacteria break down organic substances in food into inorganic substances, namely CO2, H2O, energy and minerals.
– Autotrophic bacteria
Bacteria Autotrophs are bacteria that can arrange their own food substances from inorganic substances that exist. From the energy sources it uses, autotrophic bacteria (auto = itself, trophein = food) are divided into two groups, namely:
1. Photoautrotof bacteria
Photoautrotof bacteria are bacteria that use light as energy to convert inorganic substances into organic substances through photosynthesis. Examples of these bacteria are: green bacteria, purple bacteria.
2. Kemoautrotof bacteria
Kemoautrotof bacteria are bacteria that use chemical energy that they get when they change chemicals from complex molecules into simple molecules by releasing hydrogen. Examples of these bacteria are: Nitrosomonas. Nitrosomonas can break NH3 into NH2, water and energy.
– Besides there are bacteria that are grouped based on how to get food, there is also a classification of bacteria based on the source of oxygen needed in the process of respiration. The bacteria are grouped as follows:
1. Aerobic bacteria
ie bacteria that use oxygen freely in the process of respiration. For example: Nitrosococcus, Nitrosomonas and Nitrobacter.
2. Anaerobic bacteria
ie bacteria that do not use oxygen freely in the process of respiration. For example: Streptococcus lactis.