| Question | Answer |
|---|---|
| The first of these objects discovered by the Keck Observatory was the Gliese 876b, and Michel Mayor and Didier Queloz won the Nobel Prize in Physics in 2019 for discovering one of these objects named 51 (+) Pegasi b. These objects can be detected with the radial-velocity method, while other methods for detecting these objects include Doppler spectroscopy and transit photometry. Gas (*) Giants, Neptunian, and Super-Earth are types of, for the points, what planetary bodies that orbit a star outside of the solar system? | Exoplanets (or Extrasolar Planets; prompt on "planet"; prompt on "Neptunian" or "Super-Earth" before mentioned) |
| One form of this property is caused by a mutated DD-transpeptidase enzyme. Genes that confer this property, such as the SCCmec cassette, can be spread through horizontal (+) gene transfer. The misuse of broad-spectrum drugs can cause cells to develop this property, which can be mediated by efflux pumps or beta-lactamases. The strain (*) MRSA [[murr-suh]] has, for the points, what property of bacteria that cannot be killed with drugs such as penicillin? | antibiotic resistance (or antimicrobial resistance; or AMR; or ABR; accept any answer with word forms of resistance that mentions specific antibiotics like penicillin, beta-lactam, or methicillin; prompt on just "resistance") |
| One pathway of this process involves dimers of the protein Bax and Bak. TNF- alpha receptors can initiate this process upon binding by activation of death domain proteins. (+) Cytochrome c is released into the cytosol during this process, and caspase-9 causes the final destruction of the cell in this process. Blebbing (*) is a characteristic stage of, for the points, what process of programmed cell death, contrasted with necrosis? | Apoptosis |
| Members of this genus develop from trophozoites into schizonts, and then burst into multiple merozoites to infect red blood cells. Tertian fever can be caused by both the (+) ovale and vivax species of this genus. Artemisinin and quinine are used to treat infections caused by the falciparum species of this parasitic genus, which is carried by the Anopheles (*) mosquito. For the points, name this genus of protozoa that causes malaria. | Plasmodium (accept Plasmodium falciparum; accept Plasmodium vivax; accept Plasmodium ovale) |
| The phenomenon of “marine snow” or “ocean dandruff” is caused by the falling this material from the water column to the seafloor. In aquatic ecosystems, this material is a source of nutrients for microbes living in the (+) benthic zone, and a standard example of a food chain named after this material on terrestrial ecosystems begins with dead leaves being eaten by a woodlouse, which is then eaten by a (*) blackbird. For the points, name this biological debris that is primarily made of decomposing plant and animal parts, including feces. | Detritus (prompt on answers synonymous to “dead matter” or “debris”) |
| This asterism is surrounded by stars like Rigel, Castor, and Pollux. This asterism encompasses much of the faint constellation (+) Monoceros. Its three component stars form an equilateral triangle when drawn on the celestial sphere. This asterism contains the brightest stars from Orion, Canis Major, and Canis (*) Minor. For the points, name this asterism which contains three of the brightest stars in the winter sky. | Winter Triangle (do not accept or prompt on “Summer Triangle”) |
| This region is the namesake of a hypothesis that predicts domal topographic uplift events. Post-perovskite (+) most likely exists in the bottom-most part of this region. The asthenosphere lies below the Moho discontinuity in this layer of Earth. The D-double prime layer marks the boundary between this layer and the (*) outer core. For the points, name this largest layer of Earth below the crust. | Mantle (accept Mantle plume hypothesis) |
| This region of Earth’s atmosphere contains the Kennelly-Heavyside layer. The plasmasphere lies above this atmospheric region. The D (+) layer, E and sporadic E layers, and the F layer subregions all make up this region. The thermosphere is encompassed within this region, which also contains parts of the mesosphere and (*) exosphere. For the points, name this electron-charged region of the atmosphere. | Ionosphere (prompt on mentioned layers until "encompassed") |
| These land features’ location qualifies them as ecotones between river and maritime environments. One (+) of these bodies of water drains into the Atlantic Ocean, and it was formed at the Punta Gorda by the confluence of the Uruguay and (*) Parana Rivers. For the points, name this body of water with a direct connection to the ocean and with one or more rivers or streams flowing into it. | Estuary |
| A "disequilibrium" named for this phenomenon provides the basis for genome-wide association studies. The LOD score is a statistical test for this effect, which is measured in units of (+) centimorgans that correspond to one percent recombination. This effect provides an exception to Mendel's law of independent (*) assortment. For the points, name this phenomenon in which two genes located close together on a chromosome tend to be inherited together. | genetic linkage (accept word forms; accept linkage disequilibrium) |
| Leopold von Buch divided this period into three categories called the Black, Brown, and White. Remnants (+) of limestone from this geological era were first identified in the French-Swiss mountain range after which this period was named. Constituting the middle of the (*) Mesozoic Era, this is, for the points, what geological period preceded by the Triassic and succeeded by the Cretaceous? | Jurassic Period |
| The organizers of the KEO, one of these objects in space, said, “All the messages received, without undergoing any censorship, will be embarked aboard,” when it launched in 2003. Another one of these objects launched aboard the (+) Voyager spacecraft in 1977 exists as two phonograph records containing 115 images as well as audio samples of greetings spoken in 55 languages. The Voyager (*) Golden Record is an example of, for the points, what memory box that contains present-day objects to be opened in the future? | Time Capsules (accept Voyager Golden Record before mentioned; prompt on “Capsules”; prompt on “Satellite”) |
| This structure contains a nutritive tissue layer called the tapetum, and the process of dehiscence releases microgametophytes from this structure, which contains all the microsporangia (+) found within angiosperms. The androecium is a collection of these structures, which each consist of a filament and an anther. The pistil (*) is contrasted with, for the points, what pollen-producing structure, the male reproductive organ of the flower? | Stamens (or Stamina; accept Androecium before mentioned; accept Anthers before mentioned; prompt on "Flower") |
| Along with yttrium and copper, this metal names a type of high-temperature superconductor. This element gives fireworks their green color, and its most common isotope has a mass number of (+) 138. Patients consume a drink containing a sulfate of this element as a contrasting agent before undergoing radiographic (*) examination. For the points, name this Group Two element symbolized Ba. | Barium (accept yttrium barium copper oxide; or YBCO; accept Barium Sulfate; accept Ba alone before mentioned) |
| Cultural isolation can lead to this phenomenon, which explains why Ellis van Creveld syndrome is common amongst the Amish community in the United States. Ernst Mayr formulated this phenomenon, which is a type of (+) genetic drift, as opposed to the bottleneck effect. The lack of genetic variation within a (*) population can be caused by, for the points, what genetic effect that results when small group of organisms start a new population after diverting from a larger population? | Founder Effect (prompt on “Genetic Drift” before mentioned) |
| A polymer's glass transition can be quantified using the "differential scanning" type of these devices, and constant volume is maintained in the "bomb" type of these devices, which can more accurately measure a sample's (+) enthalpy of combustion. A simple example of these devices can be constructed with a stirring rod, thermometer, (*) and two nested styrofoam coffee cups. For the points, name these devices that measure the heat given off by a chemical reaction. | Calorimeters (accept Calorimetry; accept Differential Scanning Calorimeters; accept Bomb Calorimeters; accept Coffee Cup Calorimeters) |
| This mathematician found six proofs of quadratic reciprocity. Complex numbers that have both an integer real and imaginary part are known as this man’s (+) “integers.” This mathematician names a probability distribution that resembles a “bell curve.” According to legend, this man stunned his teacher by calculating the sum of the first 100 positive (*) integers rapidly. For the points, give this mathematician, the namesake of the normal distribution. | Carl Friedrich Gauss (accept Gaussian integers; accept Gaussian Distribution; or Laplace-Gauss Distribution) |
| This Loss of Coolant Accident was rated a level seven on the International Nuclear and Radiological Event scale, and was triggered by an earthquake. This nuclear (+) disaster released roughly ten times less radiation than the accident at Chernobyl and resulted in a full closure of an island (*) facility. For the points, name this 2011 nuclear reactor accident that took place in Japan after the Tōhoku tsunami and earthquake. | Fukushima Daiichi accident (accept synonymous answers for "Accident" such as "Disaster") |
| The Heawood [[HAY-wood]] conjecture outlines the optimal way of doing this process on different surfaces. A theorem about this process was proven in 1976 by Kenneth (+) Appel and Wolfgang Haken, making it the first proof to use a computer. In graph theory, the minimum number required to perform this process is the (*) chromatic number. For the points, name this process of labeling a graph requiring only four of the namesake properties. | Graph coloring (accept Graph labeling; accept four color theorem) |
| Numbers that have this property but satisfy Fermat’s little theorem are known as Carmichael numbers. It’s not pronic, but “rectangular numbers” are (+) numbers with this property. The Sieve of Eratosthenes crosses these numbers out in its algorithm. Numbers with this property have at least one other (*) divisor between one and itself. For the points, give this property of a number which can be factored into the product of two smaller numbers, the opposite of prime. | Composite Number |
| This term is used to refer to a hypothetical situation where technological development becomes uncontrollable or irreversible. A misapplication of general (+) relativity to an infinite time in the past would predict the formation of an object described by this term that contained all of the mass in the universe. (*) For the points, give this term that refers to the infinitely dense center of a black hole. | singularity (accept technological singularity; accept gravitational singularity; or spacetime singularity) |
| The geometric mean theorem relates the length of one of these segments in a triangle to the lengths of the segments it creates. The inverse (+) Pythagorean theorem relates the length of these segments. These segments of a triangle coincide at its orthocenter. The area of a triangle can be calculated by multiplying one-half (*) times a base times one of these segments. For the points, name these segments drawn from a vertex and perpendicular to the opposite side. | Triangle altitudes |
| This phenomenon is responsible for the Ekman spiral, and its vertical analogue is known as the Eötvös [[OHT-vohs]] effect. The National (+) Geographic tested this phenomenon in an experiment where a person throws a ball to the person in front of them while on a roundabout. Contrary to popular opinion, this effect does not have an impact on the direction of toilet (*) flushing in different hemispheres. For the points, name this effect that deflects objects while rotating, an effect caused by a fictitious namesake force. | Coriolis Effect (or Coriolis Force) |
| This process and its terminology is still commonly used despite our advances in the understanding of the quantum-mechanical (+) nature of the atom. This process, developed under the Bohr model of the atom, has to do with the arrangement of certain particles into their (*) energy sublevels. For the points, name this process of summarizing and arranging electrons into their orbitals, governed by concepts such as the Aufbau principle. | Electron Configuration (accept Electronic Structure; prompt on descriptive answers) |
| This unit of measurement was named after the inventor of the five-bit teletype code. In digital systems with binary (+) code, this unit of measurement is equivalent to one bit per second. Conversely, in non-digital systems, the informational (*) size of this unit of measurement varies. For the points, name this unit of measurement for the symbol rate that determines the speed of communication over a particular channel. | Baud (prompt on "symbols per second" or "pulses per second") |
| The lever rule can be applied to these diagrams after drawing their tie lines. The Widom and Frenkel lines on these diagrams separate different parts of a (+) supercritical fluid. The Clausius-Clapeyron equation is used to measure the slope of the coexistence curves on these diagrams, which meet at the (*) triple point. For the points, name these diagrams that plot temperature against pressure to show where a substance exists as a solid, liquid, or gas. | phase diagrams (or P-T diagrams) |
| This compound has the lowest melting point of any alkane. This molecule is both the lightest and most major constituent of liquid (+) petroleum gas. The combustion of this compound results in four molecules of water and three molecules of carbon dioxide. This molecule contains one less carbon than (*) butane. For the points, what compound with chemical formula C3H8 is commonly used in portable stoves? | Propane |
| Orally active drugs have no more than five donors of these interactions according to Lipinski’s rule. The secondary structure of proteins is determined by these interactions. (+) These interactions are stronger than van der Waals forces but weaker than covalent bonds. (*) These interactions hold together water molecules. For the points, identify these bonds named for the first element on the Periodic Table. | hydrogen bonds (accept H-Bond) |
| One form of this quantity is calculated as effective nuclear charge over the covalent radius squared when using the Allred-Rochow (+) scale. Differences in this quantity between atoms give rise to inductive effects. Cesium has the lowest value for this quantity on the Pauling scale, which ranges from 0.8 (*) to 4.0 and increases towards the top right of the periodic table. For the points, name this quantity, the tendency of an atom to attract electrons. | electronegativity (accept word forms) |
| Marian Smoluchowski proposed a theoretical perpetual motion machine powered by this process called its namesake “ratchet”. In mathematics, this phenomenon is modeled by the Wiener (+) Process, a stochastic one-dimensional model of it. This phenomenon was the subject of the second of Albert Einstein’s Annus Mirabilis papers, and was first observed by its namesake in (*) pollen grains in water. For the points, name this random movement of particles in a fluid. | Brownian motion (accept pedesis, accept Brownian Ratchet; prompt on “random walk”) |
| Pebbles of this rock are nicknamed Apache tears. Gray spherulites at crystallization sites in this rock define its "snowflake" variety. This rock, which is often formed by (+) cooling polymerized felsic lava, contains few crystals due to its viscosity. This extrusive igneous rock has a conchoidal [[kon-KOY-dul]] fracture that makes it a common material for (*) scalpel blades. For the points, name this glossy black volcanic glass. | Obsidian |
| An increased risk of developing this condition has been associated with the FOXD3 gene, as well as variations of the NLRP1 and (+) PTPN22 genes. This condition is classified as segmental or non-segmental, the latter of which can be further classified into focal, acrofacial, and mucosal. Michael (*) Jackson notably suffered from, for the points, what condition that occurs when the body stops producing melanin, leading to patchy discolorations of the skin? | Vitiligo [[vih-tuh-"LIE"-goh]] (or Leucoderma; accept Segmental Vitiligo; accept Non-segmental Vitiligo; accept Generalized Vitiligo; accept Universal Vitiligo; accept Focal Vitiligo; accept Acrofacial Vitiligo; accept Mucosal Vitiligo) |
| The Sleeping Beauty system uses one of these sequences to splice genes into vertebrate chromosomes. LINEs, SINEs, and Alu elements are examples of the (+) "retro" type of these sequences, which act though a "copy and paste" mechanism with an RNA intermediate. Barbara McClintock's studies of corn led to the discovery of these "jumping (*) genes." For the points, name these DNA sequences which can change their position within the genome. | transposons (or transposable elements; or TEs; accept retrotransposons; accept jumping genes before mention but prompt afterwards) |