1) which is NOT an element of proteins? a) carbon b) hydrogen c) nitrogen d) oxygen e) sodium 2) which one is a source of protein? a) fish b) popcorn c) bread d) cookies e) soft drinks 3) amino acids are: a) the building block of proteins b) the element of proteins c) a type of protein d) the building block of carbohydrates 4) PROTEINS CONTAIN THE ELEMENTS: CARBON, HYDROGEN, OXYGEN, AND .... a) CALCIUM b) NITROGEN c) SODIUM d) CHLORINE 5) WHAT IS THE INDICATOR FOR PROTEINS? a) BENEDICTS b) LUGOLS IODINE c) SUDAN RED d) BIURETS 6) IN THE PRESENCE OF PROTEIN, BIURETS WILL CHANGE FROM BLUE TO ...... a) RED b) YELLOW c) LIGHT PURPLE d) PURPLE/BLACK

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