What do enzymes do They increase the amount energy needed fo

What do enzymes do? They increase the amount energy needed for chemical reactions by being used up They decrease the amount of energy needed for chemical reactions by being used up They increase the amount of energy needed for chemical reactions and stay unchanged They decrease the amount of energy needed for chemical reactions and stay unchanged What are enzymes made of? Sugar Protein Fat Phospholipids What are some hormones made of? Monosaccharide Polysaccharides Cholesterol Phospholipids Which of the following vitamins is not fat soluble? A B D K Which of the following is not a function of protein? Transport molecules Antibodies Enzymes oxygen exchange A nucleotide sequence is AACGCGTAGGcTAGCTA This is DNA for sure, because it has adenine This is DNA for sure, because it has guanine This is DNA for sure, because it has thymine This is DNA for sure, because it has cytosine Which of the following is not present in RNA? A T G C Which organelle is the powerhouse of the cell? Mitochondria Nucleus Centrosome Golgi apparatus

Solution

24. (d)

Enzymes are biological catalysts, they decrease the enegry required for a reaction but still remain unchanged after the reaction.

25. (b) proteins

26. c. cholesterol

27. b. B

Vitamin C and the B-vitamins are water-soluble.

28. d Oxygen exchange

29. C

Thymine is present only in DNA not in RNA

30. b. T

31. a. mitochondria