Scientific Inquiry, Controlled Experiments Then and Now Start by observing the living species around you. Ever wonder why a pollinator is attracted to a particular flower, or what would happen to predator species if a particular prey species is eliminated? If you were a scientist you could do an experiment […]

A: You do an experiment in which you add oxaloacetate uniformly labeled with14C (ie withequal amounts of 14C in eachof its carbon atoms) along with unlabeled acetyl-CoA to an extractof mitochondria. After a single pass through the TCA cycle, whatfraction of the original radioactivity will be found in the oxaloacetate? […]

1. Which group of algae appears to be the most closely related to the ancestors of true plants? Name one feature that appears to be homologous. 2. What are microphylls and which group of seedless vascular plants are they found? 3. What is the difference between simple cones and compound […]

1. It has been said that viruses lead “a kind of borrowed life.” Do you think viruses should be considered living organisms or not? Back up your opinion by supporting facts about viruses. 2. Distinguish among viruses, viroids, and prions. Give some examples of each type of infectious agent and […]