From the very first biological process (the fertilizing of an egg) all the way to our brains and nervous system, this quiz will use its 20 questions to challenge your basic biological knowledge. These are things we should all know, but in reality, don't really use or remember most of the time. Lets see if you do.
Can You Correctly Answer All of These Trick Questions?
Knowledge is a tricky thing. You can easily be deceived into thinking you know something you really don't. This trick question quiz is sure to throw you!
QUIZ: Do You Remember Your Basic Chemistry?
Are you ready to challenge yourself in the field of basic chemistry? Let's see how you do with our basic chemistry quiz.
Test Your Knowledge of Our Solar Neighborhood!
This quiz will put your knowledge of our solar system to the test!
QUIZ: Can You Answer All of These Trick Questions?
Knowledge is a tricky thing. You can easily be deceived into thinking you know something you really don't. This trick question quiz is sure to throw you!
QUIZ: Can You Beat This Biology Test From 1994?
Can you get more than 10 in this 1994 biology exam?
Trivia: How Much Do You Know About Physical Attraction?
This quiz will test your knowledge of the basics of human attraction. In other words - do you understand why people are attracted to each other?
Are You One of the 3% Who Can Really See This Image?
Can you see this image? Are you one of the lucky few?
These Riddles Will Definitely Test How Sharp You Are...
How sharp do you think you are? Take on these lateral thinking challenges and see if you can answer them all correctly. Good Luck!
Only 2% of People Can Solve This Riddle! Can You?
According to the great Albert Einstein, only 2% of the world's population can solve this riddle by themselves. Are you one of them?
Brain Buster Challenge: Solve These Riddles!
These tricky riddles are a great way to get your mind thinking. Do you have what it to solve them?
Challenge: Can You Spot the Hiding Animal?
Sometimes, when we're not all that attentive, we can easily miss the wonderful things hidden in nature. Find out if you can spot the animals in the pictures.
Can You Crack Our Riddles? Give it a Try!
Give your brain a work out with these difficult riddles. Our tip - Think outside the box!
Give Your Brain a Good Workout 10 Tricky Riddles!
These 10 challenging riddles will give your brain the exercise that it requires.
Quick Test: Choose an Eye and Discover More About Yourself
The eyes are a window to the soul - choose yours and see what it says about you.
This Riddle Proved Too Hard For Me, Can YOU Solve It?
Are you clever enough for this riddle?
Put Your Riddle-Solving Skills to the Test Here!
Here we've collected for you 8 challenging riddles for you to set your mind to. You can click on each riddle photo to discover the answer.
You Don't Genius to Solve This, But it Surely Helps!
This isn't just another easy test - can you crack it?
8 Challenging Riddles That'll Test Your Brain to the Max
If you love yourself a riddle, you're in for a treat as we have 8 challenging riddles right here for you.
Can You Count All the Tigers Hiding in This Photo?
It might look like there are but 4 tigers in this image, but there are a lot more. How many can you find? Click on the image to see how many there are.
Can You Crack These Challenging Animal Riddles?
How well do you know the animal world? Can you crack our riddles and guess the animal in this collection of animal riddles?
Put Your Thinking Cap on and Try to Solve These Riddles
These 12 fun riddles will show just how sharp your mind is.
Are You a Riddle Master? Try Out These Tricky Brainteasers
If you love riddles, here are 10 tricky ones that will give you the challenge that you're craving.
These 8 Fun Riddles Will Test You to the Max!
Do you think you're a riddle brainbox? If so, give these 8 tricky riddles a try!
Memory Test: Only 5% Pass. Can You?
We've heard this is one tough memory quiz. It uses colors to check your short-term memory. It will take a good visual memory and a quiet environment. And besides, it's a really fun way to challenge your ability to focus.
From Easy to Hard, Can You Solve Our Riddles?
Take our riddle challenge and see how many of our 15 riddles you can solve.
12 Mysterious Riddles That'll Boost Your Mental Capacity
These 12 great riddles will definitely get your brain cells flexing and strutting their stuff in no time at all. Come on, give them a go!
Massive Riddle Collection: 120 Tricky Riddles to Test You!
Here is our enormous collection of 120 tricky riddles with answers that will definitely make you put your thinking cap on!
These Illusions Will Have You Fooled... Discover Why!
Discover what's really behind these fascinating illusions.
Test Your Mental Sharpness With These Brainteasers
See if you can figure out all of these brainteasers without peeking at the answers.
Can You Crack These 8 Challenging Riddles?
Do you think you're a bit of a riddle master? If so, give these 8 tricky riddles a go!
The 1st Move You Make in Monopoly Can Say a Lot About You
Choose the game piece you'd like to play Monopoly with, and we'll tell you who you are!
Challenge: Are You Clever Enough For This Riddle?
A simple riddle that will drive you crazy!
10 Challenging Riddles to Test Your Thinking Skills
These brain-teasing riddles will definitely test your lateral thinking skills. So, get those cogs working and try to answer all 10!
8 Tricky Riddles That'll Definitely Test Your Brain
Here are 8 challenging riddles that are bound to get your brain working.
Can You Solve These 9 Challenging Riddles? Give it a Go!
If you love yourself some challenging riddles, you should definitely give these 9 a try.
Challenge: Think You Can You Crack These 5 Math Riddles?
Test your math knowledge with these 5 fun math riddles.
10 Tricky Riddles That Could Potentially Drive You Crazy!
Here are 10 tricky riddles that you might find challenging to solve...
How Many of These Clever Riddles Can You Answer?
How many of these riddles can you guess?
Can You Solve These 10 Most Intriguing Logic Puzzles?
Everyone loves a good logic puzzle, and I'm absolutely certain that you'll enjoy these. But can you figure out the answers? Click here now to have a go!
What You See In These Images Will Tell You About Yourself
Many personality tests rely on your choices to determine your personality, but this optical illusion test will work entirely on your subconscious...
Challenge! Can You Solve These 7 Tricky Riddles?
These riddles will challenge your mental sharpness and will definitely keep you on your toes.
Have a Go at Solving These Tricky Murder Riddles
Halloween is just around the corner, so to get you in the mood, we've given you 11 murder riddles to solve. Do you think you have what it takes? Find out now.
Can You Guess the Answers to These Riddles About Nature?
Nature isn't just the inspiration for conventional forms of art, it can also be a great way to challenge your mind when phrased as riddles
Challenge: Can You Find the 6 Hidden Words in this Drawing?
Hidden in the image are six words that have been concealed. Only about 33% of adults will be able to find them all, making it one tough puzzle to complete.
Let's Play a Game: Spot the Doubled Animal!
Are you ready for a quick game of wits? Let's see how fast you can locate the animals that appear twice in this game!
Challenge: Can You Solve the 4 Square Riddle?
To solve this riddle, you must forget what you think you know...
You’ll Love Solving These Fun Little Riddles!
Give your brain a fun little workout and challenge yourself to solve all these riddles