Answer the following question given this paragraph: Sodium and chloride ions have equal but opposite charges. Opposite electric charges attract each other, so sodium and chloride ions cling together in a strong ionic bond. You can see this in row 2 of the Figure above . (Brackets separate the ions in the diagram to show that the ions in the compound do not actually share electrons. ) When ionic bonds hold ions together, they form an ionic compound. The compound formed from sodium and chloride ions is named sodium chloride. It is commonly called table salt. You can see an animation of sodium chloride forming at this URL: http://www. visionlearning. com/library/module_viewer. php?mid=55. Q: Sodium and chloride ions have equal but what charges? Choices: - path - positive - simple - opposite A:
opposite
(Question)
Answer the following question given this paragraph: Like mitochondria, plastids contain their own DNA. Therefore, according to endosymbiotic theory, plastids may also have evolved from ancient, free-living prokaryotes that invaded larger prokaryotic cells. If so, they allowed early eukaryotes to make food and produce oxygen. Q: Like mitochondria, plastids contain their own what? Choices: - riboflavin - bacteria - molecule - dna A:
(Answer)
dna
Ques: Answer the following question given this paragraph: Dehydration and hydrolysis reactions are catalyzed, or "sped up," by specific enzymes; dehydration reactions involve the formation of new bonds, requiring energy, while hydrolysis reactions break bonds and release energy. These reactions are similar for most macromolecules, but each monomer and polymer reaction is specific for its class. For example, in our bodies, food is hydrolyzed, or broken down, into smaller molecules by catalytic enzymes in the digestive system. This allows for easy absorption of nutrients by cells in the intestine. Each macromolecule is broken down by a specific enzyme. For instance, carbohydrates are broken down by amylase, sucrase, lactase, or maltase. Proteins are broken down by the enzymes pepsin and peptidase, and by hydrochloric acid. Lipids are broken down by lipases. Breakdown of these macromolecules provides energy for cellular activities. Q: Lipids are broken down by what? Choices: - hydrolysis - triglycerides - amino acids - lipases A:
Ans: lipases
(Q).
Answer the following question given this paragraph: Neutralization reactions, like the other chemical reactions you have read about so far, involve electrons. Electrons are outside the nucleus of an atom. Certain other reactions involve the nucleus of an atom instead. These reactions are called nuclear reactions. You will read about them in the next chapter, "Nuclear Chemistry. ". Q: Where are electrons located in relation to the nucleus? Choices: - in the nucleus - In a sack attached to the nucleus - though the nucleus - outside the nucleus A:
(A).
outside the nucleus
Ques:Answer the following question given this paragraph: Q: Systemic communication through the phloem helps integrate the functions of the whole what? Choices: - bird - animal - insect - plant A:

Ans:plant
Question: Answer the following question given this paragraph: Q: The fact that water in a reservoir is elevated above the ground means that it has what kind of energy? Choices: - excessive - nuclear - kinetic - potential A:
Answer:
potential