Biology, Computing & Chemistry Mix

What is the name of the biological process in which one bacterium transfers DNA directly to another through cell-to-cell contact?

Correct answer: Conjugation

Bacterial conjugation transfers genetic material directly between cells, often through a pilus.

The programming language 'Swift' was created to replace what other programming language?

Correct answer: Objective-C

Apple developed Swift and announced it at its Worldwide Developers Conference in 2014. Swift was designed as a modern language for Apple platforms and can interoperate with Objective-C.

Further reading: developer.apple.com ↗

Which RAID array type is associated with data mirroring?

Correct answer: RAID 1

RAID 1 uses mirroring: the same data is written to two or more drives, so a surviving mirror can retain a copy if one drive fails. Mirroring improves redundancy, but it is not a substitute for a separate backup against deletion, malware or other shared failures.

Further reading: www.ibm.com ↗

Which B vitamin is not naturally present in plant foods but may be added to fortified foods?

Correct answer: B12

Vitamin B12 occurs naturally in animal-derived foods. Plant foods can supply it when fortified, so saying that it cannot be obtained from plant products is too absolute.

Of all of the Postulates of Euclid, one stood out as a big sticking point. To this day it involves such things as space travel, physics, and triangles. Which postulate was it?

Correct answer: 5

Euclid’s fifth postulate, the parallel postulate, became the basis for non-Euclidean geometries that are important in modern physics and the study of curved space.

What internet protocol was documented in RFC 1459?

Correct answer: IRC

RFC 1459 documented Internet Relay Chat (IRC), a text-based protocol for real-time group and one-to-one messaging. IRC uses channels to organise discussions and has been used by online communities for decades.

Further reading: www.rfc-editor.org ↗

Which of the following is not a heart valve?

Correct answer: Carotid Valve

The carotid is an artery that supplies blood to the head and brain, not one of the heart’s valves.

The Hubble Space Telescope in orbit around the Earth has become one of the most important telescopes in the history of astronomy since its launch in 1990. It doesnt work in which one of these wavelength regimes?

Correct answer: Radio

The Hubble Space Telescope observes ultraviolet, visible and near-infrared light. Observing above Earth’s atmosphere lets it capture wavelengths that the atmosphere absorbs or distorts, producing detailed views of distant objects.

Further reading: science.nasa.gov ↗

Which principle states that pressure applied to an enclosed fluid is transmitted undiminished throughout the fluid?

Correct answer: Pascal's principle

Pascal’s principle states that a pressure change applied to an enclosed fluid is transmitted throughout the fluid. Hydraulic systems use this principle to transmit force, such as in vehicle brakes and lifting equipment.

Further reading: www.britannica.com ↗

What is the alphanumeric representation of the imaginary number?

Correct answer: i

The imaginary unit is written i and is defined by the relationship i² = −1. It allows complex numbers to represent quantities with both real and imaginary parts, which are useful in fields such as electrical engineering.

Further reading: www.britannica.com ↗