Explain the role of enzymes in living cells. Why do enzymes have different optimal pH? Explain the role of enzymes in a living cell. Why does a human body need proteins? What do enzymes have that determine their function? Why are receptor proteins important?
47 Why the contractions of muscles need a sufficient supply of blood? C I To transport oxygen and glucose for cellular respiration.II Because muscle need energy from the cellular respiration III To avoid getting muscular dystrophy disease. A. Ionly B. II only C. I, and II only D. I, II...
What causes a decrease in BP in terms of resistance, pressure and blood flow? How is arterial blood pressure maintained while the heart is in diastole? How does blood flow change in exercise? Why doesn't the human body change the driving pressure to control blood flow?
What's more, studies have shown that as the temperature drops, women's blood runs slower than men's.The human body may have changed over the past hundred years, but one thing that has not changed is that men and women have different feeling about what temperature is comfortable.根据材料...
Humans and all other living organisms flourish due to the presence of primary compounds like fats, carbohydrates and proteins. However, we need metals to actively function in conjugation with these foundational compounds. The body does need metals to function properly, but o...
Dujiangyan, located on the Minjiang River in the west of Chengdu Plain, about 50km away from Chengdu City, was built in the third century BC. Its uniqueness is that it does not need dikes to regulate water flow. For more than 2000 years, it has been playing an effective role in flood...
Why We Need A Blood ReserveBernadine Healy
of your blood stream as a canal, proteins are the cargo ships that carry vitamins, minerals, sugars, cholesterol, and oxygen through it and into cells and tissues that need them to work. Some proteins even store certain nutrients, like iron, so you have a backup supply when you need it....
“A leech feeds five times its body weight in blood, up to ten times sometimes,” Kvist says. “If that blood congealed or clotted inside its body, then the leech would fall to the bottom [of the water] like a brick.” Kvist and Doug Currie, the Royal Ontario Museum’s senior curat...
These drops widen your pupils and relax the iris, the colored part of your eye that controls the size of the pupil. This means it can temporarily stay open in brighter light while you're doctor examines your eye. How long does it take to dilate eyes? It generally takes 15-30 minutes ...