Chapter 20 Part 2 Test Flashcards
What is the main difference between kingdom eubacteria and kingdom archae
eubacteria is surrounded by a cell wall with peptidoglycan and archaes cells walls lack peptidoglycan
what are rod shaped bacterias called
bacilli
what are sperical bacterias called
cocci
what are spiral bacterias called
spirila
what do you call something that can function with or without oxygen
facultative anaerobe
what are endospores
thick internal walls that enclose the DNA making it able to survive under harsh conditions
what is conjugation and what does it result in
the exchange of genetic information across a bridge
genetic diversity
what two things do decomposers do
they decompose dead organisms to supply raw materials
they are used in industrial sewage treatment
what two things does nitrogen fixation do
convert nitrogen into useful forms
give plants the nutrients to grow
how do bacerias cause diseases
by destroying living cells or by releasing chemicals called toxins that upset homeostasis
what is it called when bacterias cause diseases
Pathogen
what are the ways to remove and kill bacteria
Ways to remove and kill
Physical removing the bacteria by dislodging them when hands are washed.
Disinfectants are chemical solutions that kill bacteria.
Food storage at low temps slow growth.
Sterilization by heating instruments to above 100 degree Celsius
Food processing like boiling, frying or heating foods to correct temps that kill bacteria.
What is an emerging disease
An unknown disease that appears in a population for the 1st time or a well known disease that becomes harder to control
when are superbugs created
when bacteria have become resistant to groups of antibiotics because they have transferred drug resistant genes.
what are prions
Particles of protein that cause diseases.
Improperly folded proteins.
They do not contain DNA or RNA.
Accumulates in the nerve cells (brain) and cause the cell to cease functioning. Which leads to death.
