1) How many strands of nucleotides is composed in the mRNA molecule? a) 1 b) 2 c) 3 d) 4 2) In eukaryotes the shape of the DNA is (blank) and in prokaryotes it is (blank). a) circular, strand b) strand, strand c) circular, circular d) strand, circular 3) How is DNA different from one person to the next? a) The sequence of sugars. b) The sequence of nucelotides. c) The sequence of phosphate groups. d) The amount of human nucleotides. 4) In DNA, adenine bonds to a) thymine. b) adenine. c) cytosine. d) guanine. 5) In DNA, guanine bonds to a) thymine. b) adenine. c) cytosine. d) guanine. 6) What are adenine, thymine, guanine and cytosine called? a) sugars b) phosphate groups c) nitrogenous bases d) RNA molecules 7) What are the components of a DNA nucelotide? a) phosphate group, sugar, nitrogenous base b) long string of hydrocarbon atoms c) serine, glycine, valine d) glucose, glucose, glucose 8) Which molecule is the monomer of DNA? a) glucose b) amino acid c) nucleotide d) fatty acid 9) How many nucleotide strands make up a DNA molecule? a) 1 b) 2 c) 3 d) 4 10) Which of the following is the sugar found in DNA? a) deoxyribose b) glycolytic acid c) ribonucleic acid d) ribose

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