In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

Q: proteins bind one end of these structures and help inhibit a process called "catastrophe. " These structures can have persistence lengths of 3-4 mm, which is several orders of magnitude higher than the average cellular diameter. These structures can be severed by katanin. Drugs such as paclitaxel stabilize these structures and prevent their depolymerization, where colchicine prevents its dimeric subunits from coming together. Shortening of these structure at the kinetochore ends of the spindle apparatus helps chromosomes walk towards poles during mitosis and meiosis. For 10 points, identify these structures which are components of the cytoskeleton and which are made of tubulin proteins.

A: Science
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Q: Protrusions of this substance in the spine are called Schmorl's nodes, and Tietze syndrome occurs when this is inflammed. Its fibro type can be found in symphyses, while the pinna is composed of its elastic type. The hyaline type of this substance is covered by the perichondrium. (*)  Intervertebral discs are made of this substance, which heals slowly due to its lack of blood vessels. Chondrocytes are cells found in this substance, and during endochondral ossification, it is replaced with bone. Patients with osteoarthritis have a loss of this substance, which normally helps lubricate joints. For ten points, name this connective tissue which makes up the human nose and ear.

A: Science
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Q: The Boltzmann-Matano method gives coefficients for this process, whose Knudsen type occurs at low pressure. On surfaces, it can occur in reptation and leapfrog modes, while it names an approximation used in reconstruction of optical tomograms. The Bohm type occurs in plasmas, and its constant is related to the ratio of terminal drift velocity to an applied force in the Einstein relation. Multiplying that same constant by 4 and time gives the square of the length associated with this process, whose flux is inversely related to separation in Fick's Laws. For 10 points, name this process also described by Graham's law, the movement of a particle down a concentration gradient

A:
Science
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