Top 10 biology facts Selected as the most interesting among biology related questions in Biology quiz How do baby birds get oxygen inside their eggs?Oxygen comes in through pores in the shell. Directly under the shell, there is a small pocket of air. The microscopic pores on the egg surface allow the CO2 to escape and fresh air to get in, so a developing bird can breathe.Created by: Kasiahard simple questions facts » Which infectious agent causes diseases that are the most difficult to cure?Prion. All known prion diseases affect the structure of the brain or other neural tissue and all are currently untreatable and universally fatal. This includes bovine spongiform encephalopathy (BSE, also known as "mad cow disease") in cattle and Creutzfeldt–Jakob disease (CJD) in humans.Created by: globalquiz.orgprions facts » How deep is the root system of a giant sequoia?4 meters (13 feet). The sequoias root system is wide spreading, but shallow. There is no taproot. A mature sequoia's roots can occupy over 1 acre of earth and contain over 90,000 cubic feet of soil. Created by: globalquiz.orgtrees facts » What is inside Swiss cheese holes?Carbon dioxide is produced by bacteria feeding on the lactic acid. In the Middle Ages, the holes were considered a sign of imperfection and cheese makers would try to avoid them.Created by: Kasiagases facts » What was included in the original Pepsi-Cola recipe?Digestive enzyme. Pepsi Cola, first introduced in 1898, was named after pepsin (enzyme) and kola (nuts). In 1931, the company entered bankruptcy and changed hands. The new owners changed the recipe to resemble more Coca-Cola.Created by: Kasiabeverages facts » Which infectious agent is the most resistant to sterilization?Prion. The smaller the agent, the more difficult it is to destroy it. Prions are quite resistant to proteases, heat, radiation, and formalin treatments. 134°C (274°F) for 18 minutes in a pressurized steam autoclave may not be enough to deactivate the agent of disease. Prions may last for decades in the environment.Created by: globalquiz.orgmedicine facts » If you were forced to feast along the tribe of cannibals, which part of the human body should you avoid at most?Brain. Eating your own and closely related species is generally a bad idea, as there are species-specific parasites and germs that might get transmitted. But eating brain, bone marrow, and the spinal cord is particularly dangerous, as you may get deadly prion diseases like kuru. Created by: life-o-holiccannibalism facts » If you were invited to an unusual feast among natives in Africa, which animal should you avoid the most?Chimpanzee. Eating closely related species is a very bad idea. There are many parasites and germs that attack both humans and apes, and might easily get transmitted. Created by: Hitter smasherdiseases facts » How many chromosomes does a mule have? (A horse has 64, a donkey has 62)63. A mule is the offspring of a male donkey and a female horse. Mules have 63 chromosomes, a mixture of the horse's 64 and the donkey's 62.Created by: karate kidgenetics facts » Which plant is hazardous to harvest when it is wet?Tobacco. Green Tobacco Sickness is a type of nicotine poisoning caused by the dermal absorption of nicotine from the surface of wet tobacco plants. The symptoms inclue vomiting, headache and fluctuations in blood pressure and heart rate. These may be so severe as to require emergency medical treatment.Created by: brainynicotine facts » Play biology quiz and see all the questions.