Chapter 20 part 2 Flashcards
What does a Bacteria Cell wall have
cell wall has peptidoglycan.
In a archae the cell wall lacks
Cell walls lack peptidoglycan.
What shape are Bacilli
Rod shaped
What shape are Cocci
Spherical
What shape are Spirilla
Spiral
Facultative Anaerobe
Can function with or without oxygen.
Endospores are
thick internal wall that encloses the DNA making it able to survive under harsh conditions.
What is Conjugation and what does it result in
is the exchange of genetic information across a bridge. It results in genetic diversity.
Decomposers
Decomposing of dead organisms and supplies raw materials and is used in industrial sewage treatment.
Nitrogen Fixation
Convertors of nitrogen into useful forms and gives plants the nutrients to grow.
Bacterial Diseases-
Can cause diseases by destroying living cells or by releasing chemicals called toxins that upset homeostasis. Pathogen.
Ways to control bacteria
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.
Emerging Diseases
-An unknown disease that appears in a population for the 1st time or a well known disease that becomes harder to control
Superbugs
are 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.
