SSHS IB Bio- MRNA Translation

DNA Replication Song

Probing Platypus Evolution

well working long term diet? hahahha

Confirming what many dieters like my mom and i already know, most diets don’t work all that well over the long term. In a study that just came out today, over 300 moderately obese subjects (average Body Mass Index; 31) were placed on one of three different diets for two years. Participants lost 10-14 pounds within five months, but then they stopped losing weight and even gained some of the weight back over the next year and a half. At the end of a full two years, participants had lost only 6-10 pounds on average – not a lot, considering they were obese to start with.The study’s authors most likely were disappointed (the study was funded in part by the Atkins Foundation, and a low-carb diet was one of the diets tested.) But based on some observed changes in lipid profiles, they suggest that the diets may have conferred some health benefits to the participants despite the minimal weight loss. It’s an interesting hypothesis, but it’s certainly not a valid conclusion at this point.

r red bullz good 4 u?

There’s growing concern among school officials and health care workers that teen use of energy drinks such as Red Bull and Spike Shooter are early warning signs of the willingness to take risks. According to researchers, high consumption of energy drinks is associated with aggressive and risky behaviors, including substance abuse, violence, and unprotected sex. No one is saying yet that these energy drinks cause such behaviors, but parents should probably be aware that teens who are willing to abuse caffeine may be more likely to engage in other risky behaviors as well. The research is published in the March issue of The Journal of American College Health and discussed in a recent news article.The energy drink Spike Shooter contains 428 mg of caffeine in 12 ounces, or about 12x that of Coke or Pepsi and 2-5 times that in a cup of coffee. Teens have been sent to the emergency room with heart palpitations, jittery behavior, and sweating as a result of drinking too many energy drinks. Some teens are combining these drinks with alcohol in the mistaken belief that it makes them less drunk.

Speedier Speedos ....omg...

Can a swimsuit make you go faster in the water? sound funny huh? Will athletes be willing to pay more than $500 for one? itz not gonna happend on me..XD Speedo is betting that the answer to both questions is “yes”. Its new high-tech Speedo LZR Racer is designed to do for swimming what titanium golf clubs and carbon composite rackets did for golf and tennis, respectively. And it might do just that!The new suit has no stitching; the parts are all bonded ultrasonically. Low-drag panels are incorporated into the nearly complete body suit to compress the swimmer’s body. According to the company, the new suits have 5% less drag than older models. Critics argue that a suit doesn’t make a world-class swimmer, and of course on one level they’re right. On the other hand, in the past two months 14 new world records have been set in swimming – 13 of them in the LZR suit.

Running<----->Hurting KNEEs?

Runners are often told (usually by non-runners) that running is hard on their knees. According to commonly held belief, the constant pounding wears out or damages knee cartilage and leads to either knee injury or an increased likelihood of osteoarthritis later in life.But the available scientific evidence suggests that running is not a risk factor for knee osteoarthritis, and may in fact keep you healthier later in life. In one study, runners were compared to age-matched non-runners over an 18-year period. There was no difference in the rate of development of osteoarthritis between the two groups. In another study, overall disability rates in runners increased at only one quarter of the rate seen in age-matched sedentary persons.A major risk factor for knee osteoarthritis is not running per se; its having had a previous knee injury. That is why there is so much osteoarthritis among former N.F.L. football players and former soccer players. But if you’re a recreational runner and manage to stay injury-free, don’t worry about wearing out your knees – just keep running!