Science and Technology Fundamentals

LOGO is best known for turtle graphics, a feature where students control an on-screen "turtle" that draws as it moves, teaching programming concepts visually. The turtle moves with commands like FORWARD, BACK, LEFT, RIGHT, making abstract programming concepts concrete. This educational approach was revolutionary for teaching programming to children in the 1960s-70s.

Java was originally called Oak during its development at Sun Microsystems in the early 1990s. The name was inspired by an oak tree outside developer James Gosling's office. It was renamed to Java in 1995 because "Oak" was already trademarked. The new name was chosen arbitrarily, inspired by the team's love for coffee from Indonesia.

The C programming language was developed by Dennis Ritchie at Bell Labs in the early 1970s. He created C as a systems programming language for developing the Unix operating system. C's design influenced countless subsequent languages including C++, C#, Java, and Python, making Ritchie one of the most important figures in computing history.

Bjarne Stroustrup created C++ as an extension of the C programming language in 1979 at Bell Labs. Dennis Ritchie developed C, not C++. John Travolta and Benjamin Button are unrelated to programming languages.

Go (Golang) was developed by Google in 2009, designed by Robert Griesemer, Rob Pike, and Ken Thompson. It was created to address criticism of other languages while keeping their useful characteristics. The language is based on C syntax.

The adult human brain typically weighs between 2-3 pounds (approximately 1.3-1.4 kg on average). This weight remains relatively consistent across adults, making up about 2% of body weight while consuming about 20% of the body's energy.

The right hemisphere of the brain is primarily associated with artistic, creative, and holistic thinking, while the left hemisphere is more associated with logical, analytical, and linear processing. This is known as lateralization of brain function.

The human heart is approximately the size of a person's closed fist, not their foot. An average adult heart is about 12 cm long, 8 cm wide, and 6 cm thick, weighing between 250-350 grams.

The small intestine is remarkably long - approximately 20 feet (6 meters) in an adult when stretched out. This length provides a large surface area for nutrient absorption, which is further increased by villi and microvilli lining the intestinal walls.

The lungs actually add oxygen to the blood, not remove it. During inhalation, oxygen enters the alveoli and diffuses into the bloodstream, while carbon dioxide (a waste product) is removed from the blood and exhaled. The lungs oxygenate blood.

The kidneys do not hold liquid waste - they filter blood and produce urine, which then flows to the urinary bladder. The bladder is the storage organ that holds urine until it becomes full and signals the urge to urinate. The question describes the bladder's function.

An adult human skeleton has 206 bones, not over 600. Children have more bones (around 270-300) because some bones fuse together as they grow, but even then the count never exceeds 600. The correct answer is False.

The liver is indeed the largest single internal organ in the human body, weighing about 1.5 kg on average. While skin is the largest organ overall, the liver is the largest internal organ. The correct answer is True.

The heart sounds ('lub-dub') are created by the heart valves closing. The first sound (lub) comes from the mitral and tricuspid valves closing, and the second sound (dub) comes from the aortic and pulmonary valves closing. The correct answer is True.

The human body contains over 600 skeletal muscles. While the exact number varies slightly among sources, the commonly accepted range is 640-650 muscles in the human body. The correct answer is True.

An n-dimensional cube (n-cube) has each vertex connected to n edges. There are 2^n vertices total. Each edge is counted twice (once from each endpoint), so total edges = n * 2^n / 2 = n * 2^(n-1). This gives option C.

In a complete graph with n vertices, each vertex connects to (n-1) others. Total connections counted this way = n*(n-1). Each edge is counted twice (once from each endpoint), so actual edges = n*(n-1)/2. Option A is correct.

Kuratowski's theorem provides the complete characterization of planar graphs. A graph is planar if and only if it does not contain a subgraph that is a subdivision of K5 (complete graph on 5 vertices) or K3,3 (complete bipartite graph with 3+3 vertices). These two graphs are the minimal non-planar graphs - any graph containing them as a subgraph cannot be drawn without edge crossings.

Euler's formula for connected planar graphs states v - e + f = 2, where v is vertices, e is edges, and f is faces. Rearranging gives f = e - v + 2. This fundamental relationship applies to all connected planar graphs drawn without edge crossings.

Euler's formula for connected planar graphs states v - e + f = 2, where v is vertices, e is edges, and f is faces. Rearranging gives f = e - v + 2. This fundamental relationship applies to all connected planar graphs drawn without edge crossings.