General Science Preparation Quiz

Explanation
Hemoglobin is a protein found in red blood cells that is responsible for carrying oxygen throughout the body. It is composed of four subunits, each containing a heme group that binds to oxygen molecules. Therefore, a human red blood cell has four parts of hemoglobin.

Explanation
The correct answer is 2. This suggests that the average person spends only 2 weeks waiting for a traffic light to change in their lifetime. This implies that waiting for traffic lights is not a significant amount of time in the overall lifespan of an individual.

Explanation
In 1963, the record for the fastest serve of a tennis ball was set at 154 Mph. This means that during that time, the tennis player was able to hit the ball with incredible speed, making it difficult for their opponent to return the serve. This record demonstrates the power and skill of the player in delivering a fast and powerful serve.

Explanation
In 1985, the fastest bicyclist was clocked at a speed of 154 mph. This indicates that the bicyclist was able to reach an impressive speed on their bike during that time.

Explanation
A whip is the correct answer because when it is cracked, it produces a sharp sound known as a sonic boom. The tip of the whip moves faster than the speed of sound, creating a shockwave that breaks the sound barrier. This phenomenon was observed and studied before the sound barrier was officially broken by an airplane or any other human-made object.

Explanation
The correct answer is 7 Minutes. This suggests that the average person takes around 7 minutes to fall asleep. This could be based on research or studies that have been conducted to determine the average time it takes for individuals to transition from being awake to asleep. However, without further information, it is difficult to determine the specific context or factors that may influence this average.

Explanation
The correct answer is 300 Mph. This is the fastest wind speed ever recorded. Wind speeds can vary greatly depending on the weather conditions, and in extreme cases, such as tornadoes or hurricanes, wind speeds can reach incredibly high velocities. The record for the fastest wind speed ever recorded was set during a tornado in Oklahoma in 1999. It is important to note that wind speeds of this magnitude are extremely rare and can cause significant damage and destruction.

Explanation
The fastest steam locomotive can go up to 125 mph.

Explanation
Al Gore is credited with coining the term "Information Superhighway" in 1994. As Vice President of the United States at the time, Gore used the term to describe the future interconnected network of computers and communication systems that would revolutionize the way information is accessed and shared. While Gore did not invent the internet, his advocacy and support for its development and expansion earned him recognition for popularizing the term.

Explanation
The record for "Speed Around the World" set by the Boeing 777 was 42 hours. This means that the Boeing 777 was able to complete a trip around the world in 42 hours, which is a remarkable feat considering the vast distances involved. This record showcases the speed and efficiency of the Boeing 777 aircraft.

Explanation
The correct answer is 24,791 Mph. The Apollo 10 command module reached this speed, making it the greatest speed ever traveled by humans.

Explanation
The correct answer is 60 seconds. This is because it takes approximately one minute for the blood to make one complete circuit of the human body. The circulatory system consists of the heart, blood vessels, and blood, which work together to transport oxygen, nutrients, hormones, and waste products throughout the body. The heart pumps oxygenated blood to the body's tissues through arteries, and then the deoxygenated blood returns to the heart through veins. This entire process, known as circulation, takes about 60 seconds to complete.

Explanation
To burn off calories, you need to perform physical activity. The question states that the activity is walking at a speed of 5 mph. The answer is 2.5 miles because when you walk at this speed for that distance, you will burn approximately 385 calories.

Explanation
The Shinkansen, also known as the Bullet Train, travels between Hiroshima and Kokura in 44 minutes. This high-speed train is renowned for its efficiency and speed, allowing passengers to cover a distance of 120 miles in a relatively short amount of time. With its advanced technology and dedicated tracks, the Shinkansen has become a symbol of Japan's transportation excellence.

Explanation
Each amino acid is specified by a sequence of three nucleotides in a DNA or RNA molecule. This sequence of three nucleotides is called a codon. There are a total of 64 possible codons, but only 20 different amino acids. Therefore, it takes three nucleotides to specify one amino acid.