The most common fatal bacterial diseases are respiratory infections. Antibiotics are used to treat bacterial infections and are also used in farming, making antibiotic resistance a growing problem.

Bacterial infections are any illness or condition caused by bacterial growth or poisons (toxins). You can get sick from getting harmful bacteria in your skin, gut (GI tract), lungs, heart, brain, …

Jun 13, 2025 · bacteria, any of a group of microscopic single-celled organisms that live in enormous numbers in almost every environment on Earth, from deep-sea vents to deep below …

Oct 4, 2019 · Bacteria are single-celled microorganisms with prokaryotic cells, which are single cells that do not have organelles or a true nucleus and are less complex than eukaryotic cells. …

Feb 2, 2023 · Bacteria are disease-causing, microscopic, single-celled organisms with prokaryotic cell structures. They do not have membrane-bound organelles, including a true nucleus. Being …

Apr 7, 2022 · There are technically five classes of bacteria, with each group based on their shape: Bacteria are also described as aerobic, anaerobic, or facultative anaerobes. These terms …

Feb 12, 2019 · Bacteria are microscopic, single-celled organisms that exist in their millions, in every environment, both inside and outside other organisms. Some bacteria are harmful, but …

Bacteria are microbes with a much simpler cell structure than many other organisms, but they are by no means simple. The more scientists look, the more they understand about how complex …

Oct 14, 2021 · Bacteria are single-celled organisms with a unique internal structure. Humans and other multicellular organisms are eukaryotes, which means our cells have distinct nuclei bound …

Oct 13, 2024 · "Bacterial" is the adjective used to describe something that is driven by the presence of bacteria, such as in the term "bacterial infection." When harmful bacteria enter the …