D. Producir anticuerpos específicos para un patógeno
Answer:
A. Urethra
Explanation:
The part highlighted below is also known as the Urethra, or the tube in which the urine or semen travels in the male reproductive system! :)
Answer:The electron transport chain is a series of complexes that transfer electrons from electron donors to electron acceptors via redox reactions, and couples this electron transfer with the transfer of protons across a membrane. The electron transport chain is built up of peptides, enzymes, and other molecules
Explanation:give brianlest
