According to cell theory which activity is impossible a. skin cells forming from sunlight
b. ribosomes being present in eukaryotes
c. prokaryotes existing by themselves
d. liver cells forming from liver cells

The body is protected against harmful flu viruses by

The energy available as a result of the motion of a body is called energy. -potential -gravitational -kinetic -chemical

What is the difference between the conducting zone and the respiratory zone of the respiratory system? the conducting zone is a series of cavities and tubes that move air to the respiratory zone where gases exchange with the bloodstream. the conducting zone exchanges gases between the lungs and the alveoli and the respiratory zone is a series of cavities and tubes that move air to the conducting zone. the conducting zone moves oxygen into the cells and the respiratory zone takes carbon dioxide away from the cells. the conducting zone moves oxygen into the bloodstream and the respiratory zone takes carbon dioxide away from the bloodstream.