¿Cuáles de las siguientes características son comunes a las hormonas de los vertebrados? I Actúan en una célula o tejido especifico
II algunas son de naturaleza proteica
III son incorporado al organismo por la dieta
IV atraviesan las paredes de los capilares sanguíneos

Which of these substances does not protect against invaders in the nonspecific immune response? a. saliva b. mucus c. tears d. urine

Group control group #1 experimental group yes yes yes control group #2 no new drug orange juice bed rest no yes no yes ves which of the following is the best explanation of why a second control group was included in this experiment? o a. to provide the volunteers in the study with something to drink o b. to prove that the common cold cannot be cured c. to confuse anyone who is trying to steal their new drug and sell it as their own invention o d. to researchers conclude that results are related to the new drug and not to the orange juice submit e previous

Pulmonary arteries carry highly oxygenated blood. true or false?