Answer the following question given this paragraph: Q: What helps to convert some molecules to forms that can be taken up by other organisms? Choices: - eukaryotes - protists - scavangers - prokaryotes A:
prokaryotes

Answer the following question given this paragraph: Primary Producers/Food Sources Protists are essential sources of nutrition for many other organisms. In some cases, as in plankton, protists are consumed directly. Alternatively, photosynthetic protists serve as producers of nutrition for other organisms. For instance, photosynthetic dinoflagellates called zooxanthellae use sunlight to fix inorganic carbon. In this symbiotic relationship, these protists provide nutrients for coral polyps (Figure 23.29) that house them, giving corals a boost of energy to secrete a calcium carbonate skeleton. In turn, the corals provide the protist with a protected environment and the compounds needed for photosynthesis. This type of symbiotic relationship is important in nutrient-poor environments. Without dinoflagellate symbionts, corals lose algal pigments in a process called coral bleaching, and they eventually die. This explains why reefbuilding corals do not reside in waters deeper than 20 meters: insufficient light reaches those depths for dinoflagellates to photosynthesize. Q: Without dinoflagellate symbionts, corals lose algal pigments in a process called coral bleaching and eventually die, while corals in turn provide protection, making this what type of relationship?. Choices: - idealistic - semantic - parasitic - symbiotic A:
symbiotic

Answer the following question given this paragraph: The hypothalamus and pituitary gland are located close together at the base of the brain. Q: The hypothalamus and pituitary gland are located near the base of this organ? Choices: - the heart - the lungs - the liver - the brain A:
the brain