Mastering Biology 1
In what way is a community different from an ecosystem?
A community consists of all of the interacting populations in an ecosystem. An ecosystem includes the non-living components that affect life as well as all of the interacting populations in a given area.
Which of the following is true?
Bacteria can mutate within the human body.
Can you sequence the following levels of biological organization from smallest to largest?
Smallest level molecule cell tissue organ organism population community ecosystem biosphere Largest level
Why did this team hire a geophysicist?
To scan the site with radar and imaging.
Why are viruses not considered to be living organisms?
Viruses do not have their own cells and they do not reproduce on their own.
You are an epidemiologist specializing in antibiotic-resistant strains of bacteria. For the best hope in saving a patient's life, you want to stop the infection before it gets where?
bloodstream
A(n) _____________ is a testable explanation for an observation.
hypothesis
Which of the following lists the steps of the scientific method in their proper order?
observation, question, hypothesis, prediction, experiment
Which of the following is an example of discovery science?
observing what other students in your class are wearing
Which of the following is an example of hypothesis-driven science?
testing whether or not dead batteries are preventing a TV remote from working
About how many people die in the U.S. each year from hospital-acquired infections?
99,000
In which of the following ways are you most likely to contract cholera?
By drinking water contaminated with cholera.
Which of the following did scientists discover about Klebsiella pneumoniae?
It remains latent in the body for longer than originally thought.
Which of the following would have most likely prevented so many patient deaths from Klebsiella pneumoniae at this National Institutes of Health hospital?
More thorough disinfection techniques.
Which of the following is considered the fundamental unit of life?
a cell
Which of the following led researchers to send John Ruddy's remains back to Ireland?
a dental abnormality
The cholera outbreak at the shanty was attempted to be controlled by what?
a forced quarantine
Darwin's term for evolution was __________.
descent with modification
Imagine that your car is stalled and will not start. If you add gasoline to the tank to see if that helps, which step of the scientific method are you performing?
experiment
You specialize in matching dental records of missing people to teeth and jaws of criminal cases. What are you?
forensic odontologist