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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)
đĸeasy
Which organ pumps blood through the human body about 100,000 times a day?
đĸeasy
What do we call the young of a frog before it grows legs?
đĄmedium
In 1953 who built the double helix model of DNA with Francis Crick?
đ´hard
In 2003 which project announced the essentially complete human genome sequence?
đĄmedium
What is the term for plant movement toward light?
đĸeasy
Which gas do humans breathe out after using oxygen?
đĸeasy
What is the largest land animal alive today?
đĸeasy
What type of animal lays eggs but nurses its young with milk?
đĸeasy
Which organ helps filter blood and makes urine?
đĸeasy
What do bees collect from flowers to make honey?
đĄmedium
Which hormone triggers ripening in many fruits?
đ´hard
Which algae produced the Devonian forest like mats that stabilized soils about 420 million years ago?
đĄmedium
What year did Barbara McClintock receive the Nobel Prize for jumping genes?
đ´hard
Which fish holds the record for deepest verified dive by a whale prey item at 2,992 meters?
đĄmedium
Which structure closes the trachea when you swallow?
đĄmedium
Which fish can generate up to 600 volts to stun prey?
đ´hard
Which human gene mutation gives resistance to HIV entry by deleting 32 bases?
đ´hard
Which insect is the loudest, measured at about 106 decibels?
đ´hard
What is the exact diploid chromosome number of the domestic dog?
đ´hard
Which mutation created the domestic corn cob from teosinte by altering branch length?
đĸeasy
Which sense is most developed in bloodhounds for tracking?
đĄmedium
What is the specialized leaf pore that opens and closes for gas exchange?
đĸeasy
What do carnivores mainly eat?
đĄmedium
Which protist caused the Irish potato famine in the 1840s?
đĄmedium
What pigment makes flamingos pink due to their diet?
đĄmedium
Which genetic disorder results from an extra chromosome 21?
đĄmedium
Which vitamin deficiency causes scurvy?
đ´hard
Which codon serves as the most common start signal in mRNA?
đĸeasy
Which kingdom do mushrooms belong to?
đ´hard
What was the first monoclonal antibody therapy approved in 1986?
đ´hard
Which bacterial structure rotates like a propeller powered by proton motive force?
đĄmedium
Which animal uses a hammer and anvil of shell to crack prey on its chest?
đ´hard
Which fruit is botanically a multiple fruit formed from fused flowers?
đ´hard
Which plant lineage evolved C4 photosynthesis independently more than 60 times?
đĸeasy
What is the sugar that powers cellular respiration?
đ´hard
The human olfactory receptor gene family contains approximately how many genes?
đĸeasy
What is the largest organ in the human body?
đ´hard
Which bird can sleep with half its brain at a time while flying long distances?
đĄmedium
What molecule acts as the final electron acceptor in aerobic respiration?
đĄmedium
What is the longest nerve in the human body?
đĸeasy
What structure do plants use to make food from sunlight?
đĄmedium
Which type of RNA carries amino acids to the ribosome?
đ´hard
What is the turnover rate of the enzyme RuBisCO in the Calvin cycle?
đĄmedium
What is the largest part of the human brain?
đĸeasy
What is the term for an animal that eats both plants and animals?
đĸeasy
Which bird cannot fly but can run up to 45 miles per hour?
đ´hard
Where does the fastest plant movement occur, recorded at about 70 meters per second?
đ´hard
In 1961 which scientist proposed the operon model with Jacques Monod?
đĄmedium
The Hardy Weinberg principle assumes which condition?
đĸeasy
What is the largest fish in the world?
đĸeasy
Which vitamin do we make from sunlight exposure?
đĸeasy
What do we call animals with backbones?
đ´hard
The sodium potassium pump exchanges exactly how many ions per cycle?
đĸeasy
Which marine mammal uses echolocation to navigate?
đ´hard
Which plant has the largest known seed mass averaging 18 kilograms?
đĄmedium
Which organelle packages proteins into vesicles for shipping?
đĄmedium
Which blood vessel leaves the left ventricle to supply the body?
đĸeasy
What organelle is known as the powerhouse of the cell?
đ´hard
In 1674 who first described living single cell organisms he called animalcules?
đĄmedium
Which bird species has the longest migration round trip over 40,000 miles?
đĸeasy
Which tiny blood vessels exchange gases with tissues?
đĄmedium
What is the photosynthetic partner in most lichens?
đ´hard
What is the precise base pair length of mitochondrial DNA in humans?
đ´hard
What is the shortest known peptide hormone in humans with three amino acids?
đĄmedium
What is the first antibody made in a primary immune response?
đĸeasy
Which animal has a blue blood pigment based on copper?
đĸeasy
Which organ stores bile for digesting fats?
đĸeasy
Which part of a flower makes pollen?
đĸeasy
Which bone protects the brain?
đĄmedium
Which scientist coined the term cell in 1665?
đĄmedium
What is the connective tissue that attaches muscle to bone?
đ´hard
What year did Kary Mullis publish the polymerase chain reaction method?
đĸeasy
What molecule carries oxygen in red blood cells?
đĄmedium
Which organ can regenerate up to two thirds of its mass in humans?
đĄmedium
Which macromolecule is primarily built from amino acids?
đĄmedium
Which organ produces insulin?
đ´hard
What is the largest known bacterium discovered in 2022 that is visible to the naked eye?
đĄmedium
Which marine animal has the largest heart by mass?
đ´hard
Which Antarctic moss can revive after 1,530 years of ice burial as shown in 2014?
đĸeasy
What animal can sleep standing up using leg locks?
đĸeasy
What is the hard outer covering of insects called?
đ´hard
In 1977 what sequencing method used chain terminating dideoxynucleotides?
đĄmedium
Which cellular process separates sister chromatids?
đ´hard
What is the estimated maximum lifespan of the Greenland shark?
đ´hard
What is the prion disease described in Fore people due to ritual cannibalism?
đĄmedium
Which metal is at the center of chlorophyll?
đĸeasy
Which blood type is the universal donor for red cells?
đĄmedium
What is the primary nitrogen waste in birds?
đĸeasy
What gas do plants take in during photosynthesis?
đĸeasy
What is the green pigment that captures light in plants?
đ´hard
What CRISPR enzyme is used in prime editing reported in 2019?
đĄmedium
Which animal has a three chambered stomach but is not a true ruminant?
đĄmedium
Which brain region is crucial for forming new long term memories?
đ´hard
Which extinct hominin had the smallest average brain volume at about 426 cubic centimeters?
đĸeasy
Which human teeth are specialized for cutting?
đ´hard
Which marine invertebrate can clone itself by fission and also undergo whole body regeneration?
đĸeasy
What is the name for an animal that is active at night?
đĸeasy
What is the process by which water moves through a semipermeable membrane?
đĄmedium
Which animal can slow its heart to two beats per minute during a dive?
đ´hard
What is the protein that gives spider dragline silk its strength, rich in beta sheets?
đ´hard
What is the tardigrade protein that protects DNA from radiation by forming a shield?
đĄmedium
Which disease was the first to be eradicated by vaccination in 1980?
đĄmedium
What year did Charles Darwin publish On the Origin of Species?
đ´hard
What do the oldest known multicellular animal fossils from 558 million years ago belong to?
đĄmedium
What is the only mammal capable of true sustained flight?
đĄmedium
Which scientist discovered penicillin in 1928?
đ´hard
Which enzyme adds a methyl group to cytosine in eukaryotic DNA?
đĄmedium
Which part of the ear contains the organ of Corti?
đ´hard
Which organism has the smallest known genome among free-living bacteria at 580,070 bases?
đ´hard
Which amino acid has no stereoisomers due to its achiral alpha carbon?
đ´hard
Which snake holds the record for the most toxic venom by LD50 in mice?
đ´hard
What are the fast-acting peptides in cone snail venom called?
đ´hard
What is the exact count of bones in an adult human after typical fusion?
đĸeasy
Which animal is famous for changing color to blend in?
đĸeasy
Which structure lets some lizards detach their tails to escape?
đĸeasy
Which animal has the fastest recorded dive speed over 200 miles per hour?
đĄmedium
What is the term for plants that complete their life cycle in two years?
đĸeasy
What is the basic unit of life?
đĸeasy
How many chambers does a human heart have?
đĸeasy
What part of the cell holds DNA in humans?
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