(Question)
Q: The vertebrate circulatory system enables blood to deliver ________ and remove wastes throughout the body. Choices: - hydrogen and nutrients - acid and nutrients - fluid and nutrients - oxygen and nutrients A:
(Answer)
oxygen and nutrients

(Question)
Q: The urea cycle, a set of biochemical reactions that produces urea from ammonium ions to prevent toxicity, occurs to some extent in the kidney, but primarily in what organ? Choices: - spleen - skin - colon - liver A:
(Answer)
liver

(Question)
Q: Which type of bryophytes are named for their horn-like sporophytes? Choices: - arthropods - flatworms - tapeworms - hornworts A:
(Answer)
hornworts