The function of the respiratory system is to move two gases: oxygen and carbon dioxide. Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them
Flagellum is primarily a motility organelle that enables
movement and chemotaxis. Bacteria can have one
flagellum or several, and they can be either polar (one or
several flagella at one spot) or peritrichous (several
flagella all over the bacterium).
<span>It changes direction and veers off. Sometimes it splits into two. Sometimes the wave , if came at with enough speed, will cause a </span>typhoon
Cell membrane is the answr
Box 3.
By the way I wondered what was the mantel made of and I wanted to share with you (to be informed).
Source: National Geographic
Hope it helps!
#MissionExam001