Know reduction involves gain - so what is reduced?
What will be an ideal response?
NAD
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The first chemicals that provided potential energy on Earth may have been formaldehyde and hydrogen cyanide. While these were produced by sunlight-driven reactions, they also occurred around deep-sea vents. If the first organisms on Earth evolved around
these vents, the first life on Earth was _____. A) photosynthetic, obtaining energy from the Sun B) chemosynthetic, obtaining energy from chemicals C) herbivorous, obtaining energy from plants D) carnivorous, obtaining energy from animals
Which type of signaling regulates the pain response?
a. endocrine b. paracrine c. autocrine d. direct signal across gap junctions
Which of the following is a result of a positive feedback?
a. childbirth b. heart rate increase during exercise c. body water regulation d. sweating when you get hot
Gause's principle of competitive exclusion is based on the idea that ____.
A. larger organisms exclude smaller ones through competition as in the case of large trees controlling underbrush B. competition for the same resources excludes species having different life styles C. no two species can occupy the same niche indefinitely when resources are limited D. two species can coexist if their niches do not overlap E. species survival depends upon coevolution