1) Before a long race, runners ofter '; carbo load. '; This means that they eat substantial quantities of carbohydrates. how might this help their performance?
2) High temperatures can weaken bonds with a protein molecule. How might this explain the effects of using a hot curling iron or rollers in one's hair?
3) You mant to eat unsaturated than saturated fats. Name examples of foods you would eat more of and less of.Help with Biology questions, three of them. Their ';Critical Thinking'; questions.?
1. '; carbs provide the energy that fuels muscle contractions. Once eaten, carbohydrates breakdown into smaller sugars (glucose, fructose and galactose) that get absorbed and used as energy.Glycogen is the source of energy most often used for exercise. It is needed for any short, intense bouts of exercise from sprinting to weight lifting because it is immediately accessible. Glycogen also supplies energy during the first few minutes of any sport. During long, slow duration exercise, fat can help fuel activity, but glycogen is still needed to help breakdown the fat into something the muscles can use. '; - About.com
2. ';Curling irons can curl hair because hair is essentially a long string of protein, acting like wood fiber. If you heat wood, it becomes malleable and you can form it and shape it. The process of heating the hair and curling it around the curling iron makes it keep that form until it is wetted, when it once again takes its natural shape. The temperature range that actually curls hair is fairly small, so all curling irons operate with close to the same amounts of electricity. ';-ehow.com
3. ';These fats are derived from animal products such as meat, dairy and eggs. But they are also found in some plant-based sources such as coconut, palm and palm kernel oils.
(unsaturated) Monounsaturated fats and polyunsaturated fats are two types of unsaturated fatty acids. They are derived from vegetables and plants. ';- About.com
Hope this helps!
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