Why do mitochondria have two membranes?

Answer: Because mitochondria were derived from an ancient gram negative bacter.​.​.​ Fifik's Digest Top Stories For You Why do mitochondria have two membranes? Huang ZheYu, I spent months on immunology and virology Written Apr 6 Because mitochondria were derived from an ancient gram negative bacteria, which are covered by two lipid bilayers. Although there is an alternative explanation that the oute... Read More » Are Rottweilers as loyal as German Shepherds? Darius Rush, I have 2 Rottweilers and have had dogs all my life. Written Jun 30, 2016 Rottweilers are the definition of loyalty. German Shepherds are also loyal dogs but from my experience in having owned both. My German Shepherd cared more about protecting ... Read More » What is the most distinctive word in the English language that, if mispronounced, would show right away that someone is a non-native English speaker? Barnaby Lane, Public Policy and Regulatory Economist Written Thu Departing somewhat from my normal pattern of Quora answers, I have a French friend who is an accountant. She literally cannot pronounce the diphthong in the words "count" or... Read More » Why do monkeys like humans give tremendous importance to fairness? Courtney Welch, Non-profit board member and employee for several decades Written Apr 6 Why do monkeys like humans give tremendous importance to fairness? Because most primates, humans included, are social animals. We have evolved to live in social groups beca... Read More » Sen. Marsha Blackburn tweeted "China has 5000 years of cheating and stealing", is her statement true or false? Danny Wong, Chinese citizen Written Dec 7 Earlier in May, I wrote an answer that led people to accuse me of being a wumao. The question is about the kind of people who say they don't hate the Chinese people, "just ... Read More » Arabic, is it a primitive language? Mark Mostow, knows Arabic Written Mar 3 Arabic is a highly developed and sophisticated language. A thousand years ago it was the language of science and mathematics. Like Hebrew, Arabic is a logical language which... Read More » How do I become famous on YouTube? Dima Dee, 5M+ subscribers, 1B+ video views Written Sep 22, 2018 Yes and No. I started with Youtube in 2015 and sold Youtube business in August 2018. Back in 2015, I was complete zero without even basic knowledge what Youtube is. My miles... Read More » Are humans and reptiles related? Nick Lilavois, former Senior Technologist at Educational Multimedia Technology (1985-2009) Written Apr 9 Are humans and reptiles related? Some more so then others. :) Yes, all life on earth is related. Humans are mammals, so were are closer to all the other mammals than to reptil... Read More » Why does most of the times when I speak Spanish to Hispanic people in US they reply me back in English? My native language is Portuguese and I can speak both English and Spanish fluently, but I sympathize more with Spanish. I think that's very rude. Stefan Cuevas, American who has a side interest in history, politics, economics, and law. Written Apr 11 Why does most of the times when I speak Spanish to Hispanic people in US they reply me back in English? Well the simple answer for me personally is that I am fluent in Engli... Read More » I have been hearing some about BS autistic people having a short life expectancy? Why are people making this up? Jae Harland, Writer (2000-present) Written Apr 9 We do, though. Between illnesses caused by the prolonged stress we're under and a heightened risk of suicide due to people refusing to accept or accommodate us (and the ris... Read More » Read More in Your Feed Never miss a story. Designed for readers on the go. This email was sent by Quora (605 Castro Street, Mountain View, CA 94041). If you don't want to receive this type of email in the future, please unsubscribe.http://www.quora.com/