Which statement describes an example of gene therapy?

a. a virus is used to transfer human dna into a bacterial cell.

b. a defective gene is replaced with a normal gene.

c. dna banding patterns are used to identify an individual.

d. the genes for a certain desirable trait are identified.

Which of the rock examples below is most likely to be metamorphic

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol

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.