Biodiversity
The variety of life in the world, or a particular habitat or ecosystem
What is biodiversity?
An antibiotic that works by killing bacteria surrounded by a cell wall
What are beta-lactams?
The only mechanism that leads to evolutionary change that is nonrandom
What is selection?
T/F: An organism being bigger and stronger means that it is more biologically fit
What is FALSE; biological fitness has to do with the number of successful offspring.
All direct and indirect benefits that humans derive from organisms and ecosystems
This type of resistance is naturally coded and expressed by a bacterial species to a particular antibiotic.
What is intrinsic resistance?
Differences among individuals in their composition of genes and other DNA sequences due to mutation and gene transfer/sexual reproduction
What is genetic variation?
T/F:Evolution is like a climb up a ladder, organisms are always getter better and more complex
What is FALSE; evolution and natural selection do not have a goal or purpose
The primary threat to biodiversity
What is human populations and consumptions?
T/F: Humans are becoming more resistant to antibiotics everyday.
What is FALSE; antibiotic resistance is present in bacteria
Inherited traits that enhance the fitness of an individual in a given environment
T/F: Selective pressures sort existing variants in the population, they don't cause individual organisms to change
What is TRUE; the misconception is that selective pressures cause an organism to adapt
The total genetic information contained within all individuals of a species, population, or community
What is genetic diversity?
Genetic change(s) that leads to bacteria becoming resistant
The relative survival and reproduction of one variant compared to others in the same population
What is biological fitness?
T/F: Individuals evolve
What is FALSE; Populations evolve over generations. Individuals can acclimate to an environment, but that is not a permanent, heritable trait.
The ecosystem service that enables the function of all other ecosystem services
What are supporting services?
The 5 mechanisms in which bacteria develop resistance to an antibiotic
1. Germs develop new cell processes that avoid using the antibiotics target
2. Germ change or destroy the antibiotics
3. Germs restrict access by changing the entryways
4. Germs change the antibiotic target
5. Germs get rid of antibiotics (using pumps)
Small changes in the gene pool of a population over successive generations
What is microevolution?
T/F: Natural selection is the same as evolution
What is FALSE; Natural selection is a process, and evolution is the outcome. Many other processes besides Natural Selection can cause a population to evolve.