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? A:
OPTIONS:
- elements
- enablers
- consumers
- operators
operators

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? A:
OPTIONS:
- ions
- electrons
- neurons
- photons

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? A:
OPTIONS:
- reflection
- thermal
- infrared
- refraction
Answer: refraction

input with options: Answer the following question given this paragraph: Remember the quarks from the first page of this chapter? Quarks are even tinier particles of matter that make up protons and neutrons. There are three quarks in each proton and three quarks in each neutron. The charges of quarks are balanced exactly right to give a positive charge to a proton and a neutral charge to a neutron. It might seem strange that quarks are never found alone but only as components of other particles. This is because the quarks are held together by very strange particles called gluons. Q: How many quarks are in each proton and neutron? A:
OPTIONS:
- ten
- five
- four
- three
output: three

Q: Answer the following question given this paragraph: An acidic solution and a basic solution react together in a neutralization reaction that also forms a salt. Q: What is formed when an acidic solution and a basic solution react together in a neutralization reaction? A:

OPTIONS:
- Sodium
- seawater
- shallow
- salt

A: salt

Answer the following question given this paragraph: Power plants are where electric power originates. They have electric generators that generate electric current through electromagnetic induction. Q: Where does electric power originate? A:
OPTIONS:
- the Sun
- magnets
- coal mines
- power plants
power plants