Q1. If a person has stopped breathing and is receiving pulmonary resuscitation, would it be better to administer pure oxygen or a mixture of carbon dioxide/oxygen? Why?

Smoking, air pollution and altitude all affect the rate of respiration. Explain the effects of each of these on respiration and Why?

Q2. How is information about DNA structure used as the taxonomic tool?

How is DNA – DNA hybridization results used to categorize organisms?

What have “molecular clocks” to do with classification of organisms?

The binomial name of an organism consists of the names of which two classification categories.