Ques: Answer the following question given this paragraph: Chemical reactions that release energy are called exothermic reactions . An example is the combustion of methane described at the beginning of this lesson. In organisms, exothermic reactions are called catabolic reactions . Catabolic reactions break down molecules into smaller units. An example is a decomposition reaction, such as the breakdown of glucose molecules for energy. Exothermic reactions can be represented by the general chemical equation:. Q: What type of reactions are chemical reactions that release energy? Choices: - sulfuric reactions - biochemical reactions - ozonic reactions - exothermic reactions A:
Ans: exothermic reactions

Ques: Answer the following question given this paragraph: The last property above requires some additional explanation. We are all familiar with the process of dissolution on a large scale. If you stir a spoonful of salt into a glass of water, the salt crystals are broken down and seem to disappear into the water. On the atomic level, the dissolution of an ionic compound occurs when water interacts with the ions in the crystal lattice, causing the lattice to break apart ( Figure below ):. Q: On the atomic level, the dissolution of an ionic compound occurs when water interacts with the what in the crystal lattice? Choices: - atoms - fractals - particles - ions A:
Ans: ions

Ques: Answer the following question given this paragraph: Structures like the human tail bone are called vestigial structures . Evolution has reduced their size because the structures are no longer used. The human appendix is another example of a vestigial structure. It is a tiny remnant of a once-larger organ. In a distant ancestor, it was needed to digest food. It serves no purpose in humans today. Why do you think structures that are no longer used shrink in size? Why might a full-sized, unused structure reduce an organism's fitness?. Q: What purpose does the appendix serve in humans today? Choices: - work - filters blood - digests food - none A:
Ans: none

Ques: Answer the following question given this paragraph: Behaviors that are closely controlled by genes with little or no environmental influence are called innate behaviors . These are behaviors that occur naturally in all members of a species whenever they are exposed to a certain stimulus . Innate behaviors do not have to be learned or practiced. They are also called instinctive behaviors. An instinct is the ability of an animal to perform a behavior the first time it is exposed to the proper stimulus. For example, a dog will drool the first timeand every timeit is exposed to food. Q: Behaviors that are closely controlled by genes and have little to no environmental influence are called what kinds of behaviors? Choices: - generalized behaviors - diverse behaviors - learned behaviors - innate behaviors A:
Ans:
innate behaviors