1) This is a picture of one nucleotide  a) b) c) d) e) f) 2) Which of the following is the correct base pairing? a) A-C; G-T b) A-T; G-C c) A-G; C-T d) A-A; C-C 3) Which biomolecule is DNA? a) carbohydrates b) lipids c) nucleic acid d) proteins 4) What monomer builds DNA?  a) nucleotide b) nucleotide and nitrogen base c) nitrogen base pairs 5) Which nitrogen base pairs with Adenine?  a) Adenine b) Thymine c) Cytosine d) Guanine 6) Which nitrogen base pairs with Thymine? a) Adenine b) Thymine c) Cytosine d) Guanine 7) Which nitrogen base pairs with Guanine? a) Adenine b) Thymine c) Cytosine d) Guanine 8) Which nitrogen base pairs with Cytosine? a) Adenine b) Thymine c) Cytosine d) Guanine 9) What components (parts) build the backbone of DNA? a) only 1 nucleotide b) nitrogen bases only (steps on the ladder) c) sugars and phosphates (sides of the ladder) 10) A-T and G-C are examples of  a) nucleotides b) base pairs c) sugars d) acid pairs 11) The "steps" of the DNA ladder are made up of  a) nucleotides b) sugars c) acid pairs d) base pairs 12) What is the correct shape of DNA strand? a) single helix b) double helix 13) The order of your DNA bases determines your _________. a) nucleic acid b) base pairs c) traits d) phosphate  14) Which organisms have a common genetic code (DNA built from the same parts)? a) humans b) plants c) animals d) all living organisms 15) Why does your science teacher look different than the others? a) They have different components (parts) of the genetic code b) Their nitrogen bases are in different sequences (orders) 16) Where is the genetic material stored in a eukaryotic cell? a) nucleus b) floats around c) chloroplast d) mitochondria 17) Where is the genetic material stored in a prokaryotic cell? a) nucleus b) floats around in cytoplasm c) chloroplast d) mitochondria 18) Which answer describes a piece or "chunk" of DNA that codes for your traits? a) base pair b) chromosome c) genes 19) People look different because their nitrogen bases (nucleotides) are in ________ orders, or sequences.  a) different b) same 20) What type of bond holds nitrogen bases together in the center of a DNA molecule? a) covalent bonds b) ionic bonds c) hydrogen bonds d) water bonds 21) What determines your genetic code? a) sequence of phosphate groups b) sequence of nucleotides c) the order of the deoxyribose sugars d) the number of hydrogen bonds 22) How many different nucleotides are found in DNA? a) 1 b) 2 c) 3 d) 4 23) Which of the following is a nucleotide not found in DNA? a) adenine b) thymine c) guanine d) cytosine e) uracil 24) If a DNA strand is ATCGA, what is the complementary side to the DNA strand? a) ATCGA b) TAGCT c) GAGAG d) TCGAT 25) What part of the nucleotide determines the genetic code? a) phosphate group b) deoxyribose sugar c) nitrogen base d) hydrogen bond

DNA Structure Components

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