The common cold is primarily transmitted through airborne droplets when an infected person coughs or sneezes.

Bacteria in the human gut primarily help in the production of vitamins, such as vitamin K and some B vitamins.

Hand hygiene is the primary method of preventing bacterial infections, as it reduces the transmission of pathogens.

Viruses play a role in regulating bacterial populations, which can influence nutrient cycling in ecosystems.

Penicillium is a genus of fungi known for its role in the production of the antibiotic penicillin.

Plasmodium is the protozoan parasite responsible for causing malaria, transmitted by Anopheles mosquitoes.

Escherichia coli is the most common cause of urinary tract infections, accounting for about 80-90% of cases.

Lactobacillus is a type of bacteria used in the fermentation process to produce yogurt.

Protozoa are eukaryotic microorganisms, meaning they have a defined nucleus and organelles.

Influenza is a common viral infection that affects the respiratory system.