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The Brain Quiz
Answers these questions related to brains.
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Last updated: May 7, 2021
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| First submitted | May 7, 2021 |
| Times taken | 251 |
| Average score | 50.0% | Report this quiz | Report |
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1. You only use 10% of our brain.
We actually use all of it. We’re even using more than 10 percent when we sleep.
True
False
2. How many dreams does the average person have each night?
We dream mostly in pictures, with the majority of dreams being mainly visual with little sound or movement.
1-3
4-7
10-20
Hundreds
3. The brain can store up to ___ numbers in its working memory.
5-9
15-20
30-40
Infinite
4. The brain can’t feel pain.
This explains how brain surgery can be performed while the patient is awake, with no pain or discomfort.
True
False
5. Around what age does the brain stop developing?
Human brains keeps developing until you are in your late 40s. It is the only organ in the human body to undergo development for such a long time.
18 years old
30s
40s
50s
6. How long can the brain go without oxygen before damage occurs?
As little as five minutes without oxygen can cause some brain cells to die, leading to severe brain damage.
5 minutes
10 minutes
15 minutes
20 minutes
7. Your brain is 60% fat.
Consisting of a minimum 60% fat, your brain is the fattiest organ in your body.
True
False
8. Brain information travels faster than a Formula 1 race car.
Brain information travels up to 268 miles per hour. This is faster than Formula 1 race cars which top out at 240 mph.
True
False
9. Who had larger brains? Neanderthals or Homo Sapiens?
Neanderthal brains were 10% larger than our Homo sapiens brains.
Neanderthals
Homo Sapiens
10. The brain can multitask.
Your brain can’t concentrate on two things at once. What it can do is quickly toggle back and forth between tasks.
True
False
11. We have more brain cells than there are stars in the Milky Way
While this is a beautiful sentiment, it is not accurate. Best-guess estimates are that we have 86 billion neurons while there are 200-400 billion stars in the Milky Way.
True
False
12. Having high cholesterol is bad for the brain.
Having high total cholesterol is not bad for your brain. In fact, your brain consists of fat and cholesterol, and having high cholesterol has been found to actually reduce your risk of dementia.
True
False
13. If you were drinking alcohol and don’t remember what you did last night, it’s because you forgot.
You did not forget. While you are drunk, your brain is incapable of forming memories.
True
False
14. When we read, the brain quickly processes every letter in the word.
Aoccdrnig to a rscheearch at Cmabrigde Uinervtisy, it deosn’t mttaer in waht oredr the ltteers in a wrod are, the olny iprmoetnt tihng is taht the frist and lsat ltteer be at the rghit pclae. The rset can be a toatl mses and you can sitll raed it wouthit porbelm. Tihs is bcuseae the huamn mnid deos not raed ervey lteter by istlef, but the wrod as a wlohe.
True
False
15. Your brain’s storage capacity is considered virtually unlimited.
It doesn’t get “used up” like RAM in your computer. The latest research shows that the brain’s memory capacity is in the petabyte range. A petabyte is a quadrillion, or 1015, bytes. Astoundingly, this is about the same amount needed to store the entire internet!
True
False
16. The Brain processes information faster than any computer.
Japan’s K computer is one of the most powerful computers in the world. When programmed to simulate human brain activity, it took 40 minutes to crunch the data equivalent to just one second of brain activity.
True
False
17. You only have one brain.
There’s a “second brain” in your intestines that contains 100 million neurons.
True
False
18. Albert Einstein's brain was stored in Tupperware.
The pathologist who performed Einstein’s autopsy kept the brain in a jar in his basement for 40 years. Eventually, he made a cross-country trip with the brain in a Tupperware container to deliver it to Einstein’s granddaughter.
True
False
19. What percentage of people dream in color?
Around 12 percent of people dream in black and white.
50
86
100
20. People forget 95 to 99 percent of their dreams.
Since dreams are thought to primarily occur during REM sleep, the sleep stage when the MCH cells turn on, activation of these cells may prevent the content of a dream from being stored in the hippocampus – consequently, the dream is quickly forgotten.
True
False
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Which countries are home to a "supertall" skyscraper, defined as being at least 300 meters in height?
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Body Part Quizes
Really difficult to state anything about this. Many neuroscientists would definitely believe there's a limit.
-The Brain processes information faster than any computer
Not true really. This depends strongly on the type of information. Say you put a human next to a chip and told both to add one and one together, the brain would need a few milliseconds to get the answer, a chip would be limited by basically the speed of light, finding an answer in microseconds.
-You only have one brain
Very contentious. Slightly conservatively speaking we only have one brain, it's not like our thinking center is distributed somewhat like you'd see in octopi. We have 86 billion neurons. Contrast that with the hundred million neurons in the gut, that is a ~thousand times less. Plus our (central nervous system) brain is organized into specialized areas, that can't be said about the nervous system in the gut congruently.