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Biology Trivia
Discover mind-blowing biology facts that will amaze you! From the human heart pumping 100,000 times daily to the fastest plant movement at 70 meters per second - prepare to be stunned by incredible life science secrets you never knew existed.
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Questions (120 of 120)
๐ขeasy
Which organ pumps blood through the human body about 100,000 times a day?
๐ขeasy
What do we call the young of a frog before it grows legs?
๐กmedium
In 1953 who built the double helix model of DNA with Francis Crick?
๐ดhard
In 2003 which project announced the essentially complete human genome sequence?
๐กmedium
What is the term for plant movement toward light?
๐ขeasy
Which gas do humans breathe out after using oxygen?
๐ขeasy
What is the largest land animal alive today?
๐ขeasy
What type of animal lays eggs but nurses its young with milk?
๐ขeasy
Which organ helps filter blood and makes urine?
๐ขeasy
What do bees collect from flowers to make honey?
๐กmedium
Which hormone triggers ripening in many fruits?
๐ดhard
Which algae produced the Devonian forest like mats that stabilized soils about 420 million years ago?
๐กmedium
What year did Barbara McClintock receive the Nobel Prize for jumping genes?
๐ดhard
Which fish holds the record for deepest verified dive by a whale prey item at 2,992 meters?
๐กmedium
Which structure closes the trachea when you swallow?
๐กmedium
Which fish can generate up to 600 volts to stun prey?
๐ดhard
Which human gene mutation gives resistance to HIV entry by deleting 32 bases?
๐ดhard
Which insect is the loudest, measured at about 106 decibels?
๐ดhard
What is the exact diploid chromosome number of the domestic dog?
๐ดhard
Which mutation created the domestic corn cob from teosinte by altering branch length?
๐ขeasy
Which sense is most developed in bloodhounds for tracking?
๐กmedium
What is the specialized leaf pore that opens and closes for gas exchange?
๐ขeasy
What do carnivores mainly eat?
๐กmedium
Which protist caused the Irish potato famine in the 1840s?
๐กmedium
What pigment makes flamingos pink due to their diet?
๐กmedium
Which genetic disorder results from an extra chromosome 21?
๐กmedium
Which vitamin deficiency causes scurvy?
๐ดhard
Which codon serves as the most common start signal in mRNA?
๐ขeasy
Which kingdom do mushrooms belong to?
๐ดhard
What was the first monoclonal antibody therapy approved in 1986?
๐ดhard
Which bacterial structure rotates like a propeller powered by proton motive force?
๐กmedium
Which animal uses a hammer and anvil of shell to crack prey on its chest?
๐ดhard
Which fruit is botanically a multiple fruit formed from fused flowers?
๐ดhard
Which plant lineage evolved C4 photosynthesis independently more than 60 times?
๐ขeasy
What is the sugar that powers cellular respiration?
๐ดhard
The human olfactory receptor gene family contains approximately how many genes?
๐ขeasy
What is the largest organ in the human body?
๐ดhard
Which bird can sleep with half its brain at a time while flying long distances?
๐กmedium
What molecule acts as the final electron acceptor in aerobic respiration?
๐กmedium
What is the longest nerve in the human body?
๐ขeasy
What structure do plants use to make food from sunlight?
๐กmedium
Which type of RNA carries amino acids to the ribosome?
๐ดhard
What is the turnover rate of the enzyme RuBisCO in the Calvin cycle?
๐กmedium
What is the largest part of the human brain?
๐ขeasy
What is the term for an animal that eats both plants and animals?
๐ขeasy
Which bird cannot fly but can run up to 45 miles per hour?
๐ดhard
Where does the fastest plant movement occur, recorded at about 70 meters per second?
๐ดhard
In 1961 which scientist proposed the operon model with Jacques Monod?
๐กmedium
The Hardy Weinberg principle assumes which condition?
๐ขeasy
What is the largest fish in the world?
๐ขeasy
Which vitamin do we make from sunlight exposure?
๐ขeasy
What do we call animals with backbones?
๐ดhard
The sodium potassium pump exchanges exactly how many ions per cycle?
๐ขeasy
Which marine mammal uses echolocation to navigate?
๐ดhard
Which plant has the largest known seed mass averaging 18 kilograms?
๐กmedium
Which organelle packages proteins into vesicles for shipping?
๐กmedium
Which blood vessel leaves the left ventricle to supply the body?
๐ขeasy
What organelle is known as the powerhouse of the cell?
๐ดhard
In 1674 who first described living single cell organisms he called animalcules?
๐กmedium
Which bird species has the longest migration round trip over 40,000 miles?
๐ขeasy
Which tiny blood vessels exchange gases with tissues?
๐กmedium
What is the photosynthetic partner in most lichens?
๐ดhard
What is the precise base pair length of mitochondrial DNA in humans?
๐ดhard
What is the shortest known peptide hormone in humans with three amino acids?
๐กmedium
What is the first antibody made in a primary immune response?
๐ขeasy
Which animal has a blue blood pigment based on copper?
๐ขeasy
Which organ stores bile for digesting fats?
๐ขeasy
Which part of a flower makes pollen?
๐ขeasy
Which bone protects the brain?
๐กmedium
Which scientist coined the term cell in 1665?
๐กmedium
What is the connective tissue that attaches muscle to bone?
๐ดhard
What year did Kary Mullis publish the polymerase chain reaction method?
๐ขeasy
What molecule carries oxygen in red blood cells?
๐กmedium
Which organ can regenerate up to two thirds of its mass in humans?
๐กmedium
Which macromolecule is primarily built from amino acids?
๐กmedium
Which organ produces insulin?
๐ดhard
What is the largest known bacterium discovered in 2022 that is visible to the naked eye?
๐กmedium
Which marine animal has the largest heart by mass?
๐ดhard
Which Antarctic moss can revive after 1,530 years of ice burial as shown in 2014?
๐ขeasy
What animal can sleep standing up using leg locks?
๐ขeasy
What is the hard outer covering of insects called?
๐ดhard
In 1977 what sequencing method used chain terminating dideoxynucleotides?
๐กmedium
Which cellular process separates sister chromatids?
๐ดhard
What is the estimated maximum lifespan of the Greenland shark?
๐ดhard
What is the prion disease described in Fore people due to ritual cannibalism?
๐กmedium
Which metal is at the center of chlorophyll?
๐ขeasy
Which blood type is the universal donor for red cells?
๐กmedium
What is the primary nitrogen waste in birds?
๐ขeasy
What gas do plants take in during photosynthesis?
๐ขeasy
What is the green pigment that captures light in plants?
๐ดhard
What CRISPR enzyme is used in prime editing reported in 2019?
๐กmedium
Which animal has a three chambered stomach but is not a true ruminant?
๐กmedium
Which brain region is crucial for forming new long term memories?
๐ดhard
Which extinct hominin had the smallest average brain volume at about 426 cubic centimeters?
๐ขeasy
Which human teeth are specialized for cutting?
๐ดhard
Which marine invertebrate can clone itself by fission and also undergo whole body regeneration?
๐ขeasy
What is the name for an animal that is active at night?
๐ขeasy
What is the process by which water moves through a semipermeable membrane?
๐กmedium
Which animal can slow its heart to two beats per minute during a dive?
๐ดhard
What is the protein that gives spider dragline silk its strength, rich in beta sheets?
๐ดhard
What is the tardigrade protein that protects DNA from radiation by forming a shield?
๐กmedium
Which disease was the first to be eradicated by vaccination in 1980?
๐กmedium
What year did Charles Darwin publish On the Origin of Species?
๐ดhard
What do the oldest known multicellular animal fossils from 558 million years ago belong to?
๐กmedium
What is the only mammal capable of true sustained flight?
๐กmedium
Which scientist discovered penicillin in 1928?
๐ดhard
Which enzyme adds a methyl group to cytosine in eukaryotic DNA?
๐กmedium
Which part of the ear contains the organ of Corti?
๐ดhard
Which organism has the smallest known genome among free-living bacteria at 580,070 bases?
๐ดhard
Which amino acid has no stereoisomers due to its achiral alpha carbon?
๐ดhard
Which snake holds the record for the most toxic venom by LD50 in mice?
๐ดhard
What are the fast-acting peptides in cone snail venom called?
๐ดhard
What is the exact count of bones in an adult human after typical fusion?
๐ขeasy
Which animal is famous for changing color to blend in?
๐ขeasy
Which structure lets some lizards detach their tails to escape?
๐ขeasy
Which animal has the fastest recorded dive speed over 200 miles per hour?
๐กmedium
What is the term for plants that complete their life cycle in two years?
๐ขeasy
What is the basic unit of life?
๐ขeasy
How many chambers does a human heart have?
๐ขeasy
What part of the cell holds DNA in humans?
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