Answer the following question given this paragraph: Q: The production of multiple copies of a single gene is called? Choices: - cell cloning - gene variation - gene change - gene cloning A:
gene cloning
Answer the following question given this paragraph: The speed of most waves depends on the medium, or the matter through which the waves are traveling. Generally, waves travel fastest through solids and slowest through gases. That's because particles are closest together in solids and farthest apart in gases. When particles are farther apart, it takes longer for the energy of the disturbance to pass from particle to particle through the medium. At the following URL, you can watch an animation showing what happens when a wave passes from one medium to another. Q: Why do waves travel faster through solids? Choices: - particles fuse together - particles range together - particles pipe together - particles closer together A:
particles closer together
Q: Answer the following question given this paragraph: Most digestive enzymes are secreted into the GI tract by organs of the GI tract or from a nearby gland named the pancreas. Figure below shows where the pancreas is located. The figure also shows the locations of the liver and gall bladder. These organs produce or store other digestive secretions. Q: What are secreted into the gi tract by organs of the gi tract or from a nearby gland named the pancreas? Choices: - stomach acid - insulin and pepsin - bile - digestive enzymes A:
A: digestive enzymes
Question: Answer the following question given this paragraph: An incandescent light bulb produces visible light by incandescence. The bulb contains a thin wire filament made of tungsten. When electric current passes through the filament, it gets extremely hot and glows. You can learn more about incandescent light bulbs at the URL below. Q: What kind of light bulb contains a thin wire filament made of tungsten that gets hot and glows? Choices: - black light - LED - fluorescent - incandescent A:
Answer: incandescent
*Question*
Answer the following question given this paragraph: Longshore drift carries particles of sand and rock down a coastline. Q: Particles of sand and what other substance are carried by longshore drift? Choices: - magma - bone - soil - rock A:
**Answer**
rock
*Question*
Answer the following question given this paragraph: In ordinary chemical reactions, the nucleus of each atom (and thus the identity of the element) remains unchanged. Electrons, however, can be added to atoms by transfer from other atoms, lost by transfer to other atoms, or shared with other atoms. The transfer and sharing of electrons among atoms govern the chemistry of the elements. During the formation of some compounds, atoms gain or lose electrons, and form electrically charged particles called ions (Figure 2.28). Q: When atoms gain or lose electrons, they can form electrically charged particles called what? Choices: - crystals - eons - toxins - ions A:
**Answer**
ions