Answer the following question given this paragraph: Amides are prepared by the reaction of a carboxylic acid with ammonia or an amine. Q: What kind of reaction is needed to prepare amides? Choices: - amino acid reaction - oxidize acid reaction - lipophilic acid reaction - carboxylic acid reaction A:
carboxylic acid reaction
Answer the following question given this paragraph: human body system of glands that release hormones into the blood. Q: Glands release what substance into the blood? Choices: - enzymes - toxins - acids - hormones A:
hormones
Q: Answer the following question given this paragraph: For a bacteria, many aspects of gene regulation are due to the presence or absence of certain nutrients. In prokaryotes, repressors bind to regions called operators that are generally located immediately downstream from the promoter. Activators bind to the upstream portion of the promoter. Q: In prokaryotes, what are the regions called that repressors bind to? Choices: - elements - enablers - consumers - operators A:
A: operators
Question: Answer the following question given this paragraph: Solar energy travels in photons. Photons travel in waves, which make up electromagnetic radiation. Q: Solar energy travels in what? Choices: - ions - electrons - neurons - photons A:
Answer: photons
*Question*
Answer the following question given this paragraph: Because air is slightly more optically dense than a vacuum, when sunlight passes from the vacuum of space into our atmosphere, it bends slightly towards the normal. When the sun is below the horizon and thus not visible on a direct line, the light path will bend slightly and thus make the sun visible by refraction. Observers can see the sun before it actually comes up over the horizon, or after it sets. Q: When the sun is below the horizon and thus not visible on a direct line, the light path will bend slightly and thus make the sun visible by what? Choices: - reflection - thermal - infrared - refraction A:
**Answer**
refraction
Q: Answer the following question given this paragraph: First, light passes through the cornea of the eye. The cornea is a clear, protective covering on the outside of the eye. Q: What is the clear, protective covering on the outside of the eye? Choices: - retina - vitreous fluid - iris - cornea A:
A: cornea