Thinking Scientfically
- You are part of a group that is testing a new drug to treat migraines—25% of the control group given a placebo, (a placebo is an inert substance that looks like the medication taken by the experimental group) and 46% of the experimental group given the drug reported an improvement in their symptoms. Would you conclude that this is an effective drug? What other variables might be present in the study participants that might have influenced which patients benefited from the new drug?
Click Here for Answer
- Viruses are small, infectious particles. They have a genome of either DNA or RNA, but no organelles characteristic of cells. They do not divide by mitosis but are duplicated by having their constituent parts produced and assembled by the infected cell. Viruses can evolve in the same way as living things, by changes in their genome due to random mutation and selection. Would a virus be considered alive? What are the criteria on which you base your answer?
Click Here for Answer
|
