HowLifeBeganLEC21 Flashcards
How much liters of methane can cows produce per day, and how can we reduce methane?
They can produce thousands of liters. A possible way is to replace cattle meat with kangaroo meet.
What were found in ice core sample, and where was it retrieved?
Microbes making methane. Retrieved from 3 kilometers below greenland.
Many prokaryotes live with other organisms in what relationship?
Ex. Lantern fish.
In symbiotic relationships.
How many cells in your body are bacterial cells? How many is your own?
A 100 trillion. 3 trillion.
Most of our genes in our bodies are from bacteria.
How many species of bacteria exist in our bodies?
500
Bacteria in our bodies are mostly what? What do they do?
Commensal. They share our food but do no real harm.
What do commensal (latin for sharing the dinner) bacteria do inside our bodies?
Ex. E.coli that lives in our guts
Interact with our immune systems, and protect us from infections. They also help digest our food.
What is astma, and how can we reduce the risk of getting it?
It is the malfunction in our immune system that attacks us. Have access to animals like cats & dogs.
Scientists have proposed that methane in Martian atmosphere may be what?
Indicative of native methanogens there.
What major role does prokaryotes play in ecosystems?
As decomposers in recycling. They break down corpses, dead vegetation, and waste products.
What are human pathogens?
Prokaryotes that are disease causing organisms.
Pathogenic bacteria are potential what?
Example?
Weapons of bioterrorism.
Anthax - type of bacillus.
How much of all human disease are caused by prokaryotes?
Ex. lyme disease cause by tick bites.
About half.
How many bacteria does a cellphone contain? How long can they live?
It contain 18 times more bacteria than a toilet handle.
Live up to a week, and can infect you if you touch your face, mouth, or eyes.
What are prokaryotes helpful in? What is this process called?
Removing pollutions from the environment.
Bioremediation.
