Answer the following question given this paragraph: The two ribosomal subunits are named base on their sedmentation rate in a centrifuge. The unit of measurement is the Svedberg unit , a measure of the rate of sedimentation, not the size. This accounts for why fragment names do not add up (70S is made of 50S and 30S). Q: The svedberg unit is a measure of the rate of what, which is tested in a centrifuge? Choices: - precipitation - temperature - secretion - sedimentation A:
sedimentation
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Answer the following question given this paragraph: Fibrous root systems have many small branching roots, called fibrous roots , but no large primary root. The huge number of threadlike roots increases the surface area for absorption of water and minerals, but fibrous roots anchor the plant less securely. Q: Fibrous root systems have many small branching roots called what? Choices: - vines - taproots - tendrils - fibrous roots A:
fibrous roots
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Answer the following question given this paragraph: Groundwater dissolves minerals and rocks into ions. Groundwater deposits those ions into different types of structures. Limestone caves are the best place to see these structures. Water erodes the cave and it has deposits structures like stalactites and stalagmites. The cave pictured here is Carlsbad Caverns in New Mexico. Q: Groundwater dissolves minerals and rocks into what? Choices: - gravel - sand - grit - ions A:
ions
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Answer the following question given this paragraph: The most common cause of hearing loss is exposure to loud sounds. Loud sounds damage hair cells in the ear that are needed for hearing. Louder sounds damage hair cells more quickly than softer sounds. Q: Exposure to what is the most common cause of hearing loss? Choices: - Guitar - angry sounds - outside sounds - loud sounds A:
loud sounds
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