Biology Facts & Trivia - Page 2

A red blood cellRed blood cells have no nucleus. Submitted by: Adarsh - Patna, India
AlgaeAs much as 70% oxygen in our atmosphere is produced by marine plants and algae. Submitted by: Think - United States
BacteriaThe biomass of all bacteria on Earth is more than all the plants and animals combined. Submitted by: Bookworm - Greenbrier, Tennessee, United States
SynthiaThe synthetic biological cell "Synthia" is the first living organism whose parent is not a living thing but a computer. Submitted by: Hyde - Toronto, Ontario, Canada
DNAHumans share 60% of DNA with a banana. Submitted by: Grant - Philadelphia, Pennsylvania, United States
Femur BoneThe femur (thigh bone) is the largest and longest bone in the human body.
JawThe jaw is the strongest muscle in the human body in terms of exerting force. Submitted by: Vineet - India
MayflyAn adult Mayfly's life is as short as a few minutes, but its body hatches for about a year. Submitted by: Pronoy - Sundargarh, India
Fingernails The nails on long fingers grow faster than short fingers; and fingernails grow four times faster than toenails. Submitted by: Micael Gabriel - Manila, Philippines
DNA There's about 1.8 m (6 ft) long DNA inside every cell nucleus in our body, and an average adult body contains around 50 trillion (million million) cells. Submitted by: Steve - Boston, Massachusetts, United States
Bird with magnetoreception compassSome migratory birds have a "magnetic compass" in their body (a sense called Magnetoreception) to help them navigate using Earth's magnetic field. Submitted by: Akki - Dubai, United Arab Emirates
CatfishThe catfish father keeps the eggs in his mouth until they are ready to be hatched. Submitted by: Reedell
Water Bear  TardigradeThe tiny Water Bear (Tardigrade) can survive environments extreme enough to kill any other animal - with temperatures as low as -273°C close to Absolute Zero to as high as 151°C. Submitted by: Justin - Vancouver, British Columbia, Canada
Cornea in the eyeCorneas are the only tissues that don't require blood. Submitted by: Pritesh Jain - Sirohi, Rajasthan, India
Giant Kelp AlgeaThe Giant Kelp algea (Macrocystis pyrifera) is the fastest growing organism on earth and can grow at a rate of 70 cm (two feet) a day. Submitted by: Edmer Aguilar
Dolphin asleepDolphins only "sleep" half awake - keeping one eye open while consciously breathing and floating on surface. Submitted by: Jeevan - Kathmandu, Nepal
Length of forearmThe length between your elbow and hand (forearm) equals the length of your foot. Submitted by: Alyssa
arms stretchedIf you fully stretch your arms out, the fingertip to fingertip length is almost exactly your body height. Submitted by: Alyssa
LungsThe lightest organ in the human body is the lung. Submitted by: Michael Vincent Sotto
Turritopsis nutriculaA kind of jellyfish (Turritopsis nutricula) upon reaching adulthood can transform itself back to childhood by converting its cells. It may repeat this to live forever. Submitted by: Nunnally