Some bacteria manufacture and absorb their own food, while others must consume substances like living organisms or decaying material through their cell walls. Bacteria break down food in a process called respiration, which for some strains of bacteria requires oxygen to complete.Know More
Many types of bacteria are able to eat a variety of things like milk, meat, oil and gas. Some bacteria live in the digestive tracts of humans and other animals and assist the body by helping to digest food and eating other, harmful bacteria. Escherichia coli, more commonly known as E. coli, is one bacteria that lives in the human body and survives by digesting food, absorbing some of the nutrients and releasing vitamin K. The harmful version of the E. coli bacteria causes people to become sick when ingested.
In order to eat, some bacteria absorb food through their cell walls. Many are autotrophs, meaning they make their own food using things like sunlight, water and soil, similar to the photosynthesis method many plants use. They absorb the food they produce and release oxygen into the air.
Bacteria are also used to make food like cheeses and yogurt. They eat the milk sugars and convert them to lactic acid, with softer cheeses having more bacteria than hard cheese.Learn more about Cells
Prokaryotic and eukaryotic cells differ in many ways, notably in the structure of their cell walls, the arrangement of their genetic material and their internal arrangement of cellular machinery. Eukaryotes, a group that encompasses all large organisms, also tend to reproduce sexually, while prokaryotes show more variation in reproductive methods.Full Answer >
Bacteria obtain energy by either ingesting other organisms and organic compounds or by producing their own food. The bacteria that produce their own food are called autotrophs. Bacteria that must consume other organic molecules for energy are called heterotrophs.Full Answer >
The function of the nuclear membrane in an animal cell is to hold the DNA inside the nucleus in order to protect it from surrounding substances. The nuclear membrane also regulates which substances can enter or exit the nucleus.Full Answer >
Unlike bacteria, archaea are able to live in extreme environments, some produce methane, their plasmid membranes are unique compared to other lifeforms and their cell walls lack peptidoglycan, which is present in bacteria cell walls. There are three main forms of archaea: thermophiles, halophiles and methanogens.Full Answer >