Microbe Basics

Microbes

Tiny living organisms that are usually too small to be seen with the naked eye.

Bacteria

Single-celled prokaryotes that lack a nucleus

Viruses

Acellular entities consisting of genetic material enclosed in a protein coat, requiring a host cell to replicate.

Fungi

Unicellular or multicellular eukaryotes reproducing through spores.

Protozoa

Unicellular eukaryotes with a complex structure, typically found in aquatic environments and soil, reproducing both sexually and asexually.

Algae

Photosynthetic eukaryotes that can be unicellular or multicellular, found in freshwater and marine environments.

Decomposition

The process by which microbes break down organic material, recycling nutrients in ecosystems.

Nitrogen Fixation

The conversion of atmospheric nitrogen into usable forms for plants by certain bacteria, such as Rhizobium.

Pathogenic Microbes

Microbes that cause diseases in humans, animals, and plants, such as Mycobacterium tuberculosis and Plasmodium.

Bacterial Growth

The increase in the number of bacteria, following a growth curve with four phases:lag, log, stationary, and death phase.

Human Microbiome

The vast community of microbes residing in the human body, particularly in the gut, playing a crucial role in digestion and immunity.

Sterilization

The complete removal or killing of all microbes, often achieved through methods like autoclaving or filtration.

Disinfection

The process of reducing microbial load on inanimate surfaces using agents like bleach or alcohol.

Antibiotics

Medications used to treat bacterial infections, ineffective against viruses or fungi.

Vaccination

Prevents infections by stimulating the immune system against specific pathogens.

Mutations

Changes in microbial DNA that can lead to rapid evolution and traits like antibiotic resistance.

Horizontal Gene Transfer

The acquisition of genes from other microbes, contributing to microbial evolution and adaptation.