Biology is the study of life in all its splendid variation. From the smallest cells to the largest beasts, biology sheds light on the miracle that is biological life. A little knowledge of biology can go a long way to helping out with many situations. So how about you? Do you think you remember some basic biological knowledge? Prove it by acing our test!
Take Our Quiz: Do You Know Basic Physics?
A quiz to test your knowledge and/or memory of basic physics!
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?
Quiz: How Well Do You Recall Basic Biology?
we're about to test your rudimentary understandings of biology. Do you have the required knowledge?
QUIZ: Can You Beat This Biology Test From 1994?
Can you get more than 10 in this 1994 biology exam?
QUIZ: Do You Know About the Great Science Discoveries?
Take our quiz and see if you can recall the great inventions that made our lives better.
QUIZ: Do You Know About the Great Science Discoveries?
Take our quiz and see if you can recall the great inventions that made our lives better.
Can You Solve These 8 "Mind Blowing" Riddles?
These riddles will show you that brain-teasing isn't just for kids. Do you have what it takes to solve these 8? Give them a go to find out!
These Riddles Will Really Mess With Your Brainbox!
If you're feeling like a smarty pants today, then we've got one heck of a treat in store for you, since these riddles will test your mental capacity to the max!
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 Fun Brainteasers?
Brainteasers are a great way to dust off your critical thinking skills. Here are 10 logic brainteasers that will either stump or stun you!
Can You Solve These 16 Perplexing Riddles?
There's no better brain workout that trying your hand at a few riddles.
Challenge: Can You Crack These 10 Riddles?
Can you crack these 10 challenging riddles?
Can You Answer All 10 Old Riddles?
These riddles are over 70 years old, but I bet they can still kick your butt today. Care to try and beat all 10 questions?
Can You Solve These Tricky Little Riddles?
While some of us are good at solving riddles, others are just not. How do you do? Here are 9 tricky little riddles to put your brains to the test.
How Many of These Clever Riddles Can You Answer?
How many of these riddles can you guess?
10 Tricky Riddles That Could Potentially Drive You Crazy!
Here are 10 tricky riddles that you might find challenging to solve...
Spot the Differences & Test Your Observational Skills!
Only the most observant of people can find all the differences between these images. Are you one of that select band of clever clogs?
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!
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.
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.
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!
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?
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!
Only a Few People Can See What's Hiding in This Image
What hides behind this red circle? Only a few can tell...
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.
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.
Can You Beat These 8 Difficult Riddles? Give it a Go!
Are you a riddle master? Test yourself out with these 8 tricky riddles. We'd be surprised if you can answer them all!
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
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?
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!
Put Your Thinking Cap on and Try to Solve These Riddles
These 12 fun riddles will show just how sharp your mind is.
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.
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!
You Don't Genius to Solve This, But it Surely Helps!
This isn't just another easy test - can you crack it?
Riddle Me This: Test Your Logic by Solving Riddles!
These tricky riddles are not only fun but also will test your brain - give them a go, and see if you can solve them all!
Can You Correctly See What's Hidden in These Images?
Can you see what's really hidden in these images? Click on each one to find the answer.
This Riddle Proved Too Hard For Me, Can YOU Solve It?
Are you clever enough for this riddle?
Are You One of the 3% Who Can Really See This Image?
Can you see this image? Are you one of the lucky few?
Test Your Mental Sharpness With These Brainteasers
See if you can figure out all of these brainteasers without peeking at the answers.
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!
Challenge Your Mind and See If You Can Solve These Riddles
See how you fair in these 5 popular logic riddles - they start out easy, but be prepared, the last one is pretty tough.
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?
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...
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.
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!
From Easy to Hard, Can You Solve Our Riddles?
Take our riddle challenge and see how many of our 15 riddles you can solve.
Are You Part of the 5% Who Can Solve These Logic Puzzles?
These puzzles will tease your brain like never before. If you manage to solve them, you'll be in an elite group - only 5% of people are capable of doing so.