Question 1

The medical prefix bucco refers to which part of the head?

Correct answer: Cheek

The medical prefix bucco- refers to the cheek, as in the buccal cavity or buccal mucosa.

Question 2

What does a concave mirror do with the object that is reflected?

Correct answer: Depends on the on the distance between the object and the mirror.

A concave mirror can produce a magnified, reduced, or same-size image depending on the object's distance from the mirror.

Question 3

When was the iPhone released?

Correct answer: 2007

Apple introduced the first iPhone in January 2007, and it went on sale in the United States in June that year. It combined a mobile phone, an iPod-style music player and internet communication in a touchscreen device. Source: https://www.apple.com/newsroom/2007/01/09Apple-Reinvents-the-Phone/

Question 4

The C programming language was created by this American computer scientist.

Correct answer: Dennis Ritchie

Dennis Ritchie developed the C programming language at Bell Labs in the early 1970s. C became influential because it combines low-level access to computer resources with portable, structured programming, and it helped shape languages that followed. Source: https://www.bell-labs.com/usr/dmr/www/chist.html

Question 5

How many bits are commonly in a single byte?

Correct answer: Eight bits

A byte is commonly made up of eight bits. A bit stores one binary digit, 0 or 1; grouping bits into bytes makes it easier for computers to represent characters, numbers and other data. Source: https://csrc.nist.gov/glossary/term/byte

Question 6

What does the Prt Sc button do?

Correct answer: Captures what's on the screen and copies it to your clipboard

The Print Screen key traditionally captures an image of the screen and copies it to the clipboard.

Question 7

What is the largest animal currently on Earth?

Correct answer: Blue Whale

The blue whale is the largest animal known to have lived on Earth. It feeds mainly on krill, filtering huge volumes of water through baleen plates rather than catching large prey with teeth. Source: https://www.fisheries.noaa.gov/species/blue-whale

Question 8

What does SSD stand for?

Correct answer: Solid State Drive

SSD stands for solid-state drive. Unlike a traditional hard disk drive, an SSD stores data in flash memory and has no spinning platters, which generally enables faster access and better resistance to physical shock. Source: https://www.ibm.com/think/topics/ssd

Question 9

Which of the following computer components can be built using only NAND gates?

Correct answer: ALU

NAND gates are functionally complete, so the arithmetic and logic circuits of an ALU can be constructed entirely from NAND gates.

Question 10

What is the name of the boundary between Earth's crust and mantle?

Correct answer: Mohorovičić discontinuity

The Mohorovičić discontinuity, usually called the Moho, is the boundary between Earth’s crust and mantle. It was identified from changes in seismic-wave speeds as waves pass into deeper, denser rock. Source: https://www.usgs.gov/programs/earthquake-hazards/science/seismic-waves

Question 11

Approximately how long is a year on Uranus?

Correct answer: 84 Earth years

Uranus takes about 84 Earth years to complete one orbit around the Sun. Its extreme axial tilt means it rotates almost on its side, producing unusual seasonal patterns over its long year. Source: https://science.nasa.gov/uranus/facts/

Question 12

Which element has atomic number 6?

Correct answer: Carbon

Carbon has atomic number 6, meaning its nucleus contains six protons. Carbon can form stable bonds with many elements and with other carbon atoms, allowing an enormous variety of molecules essential to life. Source: https://www.rsc.org/periodic-table/element/6/carbon

Question 13

Which hormone helps regulate the body's sleep-wake cycle?

Correct answer: Melatonin

Melatonin is a hormone involved in regulating the body’s circadian timing. Darkness normally signals the brain to increase melatonin production, helping coordinate the sleep–wake cycle; light exposure can suppress it. Source: https://www.nigms.nih.gov/education/fact-sheets/Pages/circadian-rhythms.aspx

Question 14

The mathematical constant e, one of the most important numbers in mathematics, is equal to which of these fractions?

Correct answer: none of these

The mathematical constant e is irrational, so it cannot be expressed exactly as a ratio of two integers. Its value begins 2.71828… and it appears naturally in exponential growth, logarithms and calculus. Source: https://www.britannica.com/science/e-mathematics

Question 15

Which mathematician refused the Fields Medal?

Correct answer: Grigori Perelman

Grigori Perelman declined the Fields Medal in 2006 after his work helped prove the Poincaré conjecture, a major problem in topology. The conjecture concerns the mathematical characterisation of the three-dimensional sphere. Source: https://www.mathunion.org/imu-awards/fields-medal/fields-medals-2006

Question 16

All of the following programs are classified as raster graphics editors EXCEPT:

Correct answer: Inkscape

Inkscape is primarily a vector graphics editor: it represents artwork using paths and shapes that can be resized without the pixelation associated with raster images. GIMP and Photoshop are primarily raster editors. Source: https://inkscape.org/about/

Question 17

Which gas makes up most of the atmosphere of Mars?

Correct answer: Carbon dioxide

Mars's atmosphere is very thin and consists mostly of carbon dioxide, with smaller amounts of nitrogen and argon. The low atmospheric pressure means liquid water is unstable on much of the surface under present conditions. Source: https://science.nasa.gov/mars/facts/

Question 18

Approximately what is the pH of a 0.001 molar solution of hydrochloric acid, assuming complete dissociation?

Correct answer: 3

For a 0.001 molar hydrochloric acid solution that fully dissociates, the hydrogen-ion concentration is approximately 10⁻³ mol/L, giving pH ≈ 3 because pH is −log₁₀[H⁺]. This ideal calculation assumes the stated concentration approximates hydrogen-ion activity. Source: https://www.britannica.com/science/pH

Question 19

What is the study of the cells and tissues of plants and animals?

Correct answer: Histology

Histology is the study of the microscopic structure of cells and tissues in plants and animals.

Question 20

Which hormone lowers blood calcium levels by inhibiting bone resorption?

Correct answer: Calcitonin

Calcitonin helps lower blood calcium, partly by reducing osteoclast activity.