Do all the cells use oxygen to produce energy?

Write four areas where solar cell is used as source of energy?

Name the cells that produce antibodies.

Methanogens do not produce :

Name the cells cells that produce antibodies. Explain their main functions.

When fuels burn, what do they produce?

A bacterial cell was transformed with a recombinant DNA that was generated using a human gene. However, the transformed cells did not produce the desired protein. Reasosn could be: