cExams.net
Test # 464 [08-Oct-2018]


1.
Do you have any idea what BASE jumping ________ ?

Login/Register to access massive collection of FREE questions and answers.
Login/Register

Test Index
451 [25-Sep-2018] 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 [10-Oct-2018] 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 [25-Oct-2018] 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 [09-Nov-2018] 497 498 499 500
  • Vocabulary Game 1
  • Reasons Tim Tebow Breaks The Mold
  • GK Days and Years
  • Roads to the End of the Earth
  • Amazing new Mehndi Designs
  • Most Luxurious Hotels in the World

  • Simple Science

    The Proteids

    Food:
    The proteids are the building foods, furnishing muscle, bone, skin cells, etc., and supplying blood and other bodily fluids. The best-known proteids are white of egg, curd of milk, and lean of fish and meat; peas and beans have an abundant supply of this substance, and nuts are rich in it. Most of our proteids are of animal origin, but some protein material is also found in the vegetable world. This class of foods contains carbon, oxygen, and hydrogen, and in addition, two substances not found in carbohydrates or fats - namely, sulphur and nitrogen. Proteids always contain nitrogen, and hence they are frequently spoken of as nitrogenous foods. Since the proteids contain all the elements found in the two other classes of foods, they are able to contribute, if necessary, to the store of bodily energy; but their main function is upbuilding, and the diet should be chosen so that the proteids do not have a double task.

    For an average man four ounces of dry proteid matter daily will suffice to keep the body cells in normal condition.

    It has been estimated that 300,000,000 blood cells alone need daily repair or renewal. When we consider that the blood is but one part of the body, and that all organs and fluids have corresponding requirements, we realize how vast is the work to be done by the food which we eat.

    FIG. - a is the amount of fat necessary to make one calorie; b is the amount of sugar or proteid necessary to make one calorie.


    Chourishi Systems