If you own a dog, each year, depending on the region where you live, you will need to buy
medication that treats roundworms and ticks and fleas. These organisms live either internally
or externally on dogs and obtain all their nutrients from the dog. In some cases, dogs are
harmed due to these interactions. This describes a __________ relationship.
a. commensal
b. mutualistic
c. parasitic
d. tertiary
C
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Summarize and give examples of the relationship between heritability and correlation coefficients and explain how each is calculated
What will be an ideal response?
In plants and some fungi, individuals that form the diploid generation are called ____
a. spores b. sporophytes c. gametophytes d. spermatozoa e. ova
Why has it been difficult to generate drugs to treat AIDS?
A. HIV mutates rapidly among infected humans. B. People with HIV infections die very rapidly, before the drugs have a chance to cure them. C. HIV does not cause AIDS. D. HIV does not use any enzymes that can be targeted by drugs. E. The only way to kill a virus is with a vaccine, not with drugs.
Which of the following infectious diseases currently tops the list of bioterrorist threats?
A. anthrax B. the plague C. smallpox D. botulism E. cholera