A Pressurized Airplane Cabin and an Oxygen Tent Over a Patient

question 60

Multiple Choice

A pressurized airplane cabin and an oxygen tent over a patient in a hospital both address the need of a person for oxygen.How do these compare?

• A)The oxygen tent increases the air pressure to increase the PO₂.
• B)Airplane cabin pressure lowers the partial pressures for normal breathing.
• C)Both use the same mechanism to force hemoglobin to increase affinity for oxygen.
• D)The oxygen tent increases concentration of O₂ while the airplane maintains total air pressure without changing concentrations.
• E)Both increase the PO₂ in order to force the exchange of oxygen for carbon dioxide.

---

Definitions:

Predator-prey Cycle

The dynamic, cyclical relationship between predators and their prey, where each affects the other's population size.

Plant Parasites

Organisms that live on or within plant tissues and derive nutrients at the host's expense, often causing harm.

Resource Partitioning

A process where different species utilize the same resources in different ways to reduce competition among them.

Competitive Exclusion

A principle stating that two species competing for the same resources cannot coexist at constant population values if other ecological factors remain constant.