Up to 60% of the human adult body is water. According to H.H. Mitchell, Journal of Biological Chemistry 158, the brain and heart are composed of 73% water, and the lungs are about 83% water. The skin contains 64% water, muscles and kidneys are 79%, and even the bones areRead More →
Somewhere between Seattle and Reno, a little after 8:00 p.m., the hijacker did the incredible: He jumped out of the back of the plane with a parachute and the ransom money. The pilots landed safely, but Cooper had disappeared into the night and his ultimate fate remains a mystery toRead More →
The Jack-in-the-pulpit is a somewhat common, perennial plant that’s found across eastern North America, from Texas to the Canadian Maritimes. Is Jack-in-the-pulpit native to North America? (Arisaema triphyllum), also called Indian turnip, is a unique perennial that is native to North America. It has a tall stalk, called a spathe,Read More →
It partially ionizes in water solution to give the cyanide anion, CN−. A solution of hydrogen cyanide in water, represented as HCN, is called hydrocyanic acid. Who discovered taste of cyanide? MP Prasad mixed potassium cyanide with liquor and stirred it with the back of his pen. He was writingRead More →
A medical provider will need a small sample of blood to test your hematocrit. This blood can be drawn from a finger prick or taken from a vein in your arm. If the hematocrit test is part of a CBC, a lab technician will draw blood from a vein, typicallyRead More →
Hematocrit is the percentage of red cells in your blood. Normal levels of hematocrit for men range from 41% to 50%. Normal level for women is 36% to 48%. What is hematocrit blood test used for? A hematocrit (HCT) lab test determines the percentage of the blood that is composedRead More →
The endosymbiotic theory states that some of the organelles in today’s eukaryotic cells were once prokaryotic microbes. … Some of these amoeba-like organisms ingested prokaryotic cells that then survived within the organism and developed a symbiotic relationship. How did endosymbiosis occur in eukaryotes? The endosymbiotic theory is how scientists thinkRead More →
These are cytosine, guanine, adenine (found in both DNA and RNA), thymine (found only in DNA), and uracil (found only in RNA). In DNA, adenine pairs with thymine, while cytosine pairs with guanine. Is adenine found in DNA or RNA? Three of the four nitrogenous bases that make up RNARead More →
Sambars have developed more of a nocturnal activity pattern as a response to hunting by humans, who hunt them for trade and for food. Natural predators are leopards, tigers, dholes, wolves, and crocodiles. They are sometimes captured for zoos. What attracts sambar deer? We affirm that the resin from aRead More →
Infectious droplet nuclei are generated when persons who have pulmonary or laryngeal TB disease cough, sneeze, shout, or sing. TB is spread from person to person through the air. The dots in the air represent droplet nuclei containing tubercle bacilli. Is tubercle bacillus a virus? tb) is a species ofRead More →