Transcript Biological Resistance Notes (15.2)

Biological Resistance (15.2)
State Standard
SB5E. Recognize the role of evolution to
biological resistance (pesticide and
antibiotic resistance)
Chapter 15
15.3 Natural Selection-Speciation-Resistance
Antibiotic Resistance
 Bacteria reproduce ____________ and their
population grows rapidly.
 ____________ can lead to traits that allow
certain individuals to be ____________ to
antibiotics.
 These survivors then reproduce quickly
(cloning themselves) and establish a
population of antibiotic ____________
bacteria.
Ch. 15
15.3 Natural Selection-Speciation-Resistance
Antibiotic Resistance Cont’d
Ch. 15
15.3 Natural Selection-Speciation-Resistance
Antibiotic Resistance Cont’d
 The ____________ of antibiotics has caused
antiobiotic-resistant populations of bacteria to
become a ____________ problem.
 Methicillin-resistant Staphylococcus aureus
(____________) is a bacterium that causes
infections in different parts of the body. It's tougher to
treat than most strains of staphylococcus aureus -or staph -- because it's ____________ to some
commonly used antibiotics
Ch. 15
15.3 Natural Selection-Speciation-Resistance
Antibiotic Resistance Cont’d
Typical
appearance
of MRSA
infection
Ch. 15
15.3 Natural Selection-Speciation-Resistance
Pesticide Resistance
 Pesticides may kill ____________ members of
an insect population, but ____________ allows
some individuals to be ____________ to
pesticides.
 Those who are immune are able to
____________ and ____________, passing
their immunity trait to the next generation.
 Soon, a whole population of pesticideresistant insects is thriving.
Ch. 15
15.3 Natural Selection-Speciation-Resistance
Pesticide Resistance
• ____________ of
pesticides has allowed
more and more
resistant populations
to develop.