DNA TAKS QUESTIONS SPRING 2003 – 11: (38) In DNA, which of the following determines the traits of an organism? F Amount of adenine G Number of sugars H* Sequence of nitrogen bases J Strength of hydrogen bonds APRIL 2004 – 10: (21) DNA molecules separate into single strands, which are then used to construct two identical strands of DNA. This process ensures that the — A cytoplasm is in equilibrium B mitochondria are genetically identical to the chloroplasts C parent cells use little ATP D* daughter cells are genetically identical to the parent cells APRIL 2004 – 10: (36) Which of the following nucleotide base sequences complements the section of DNA modeled above? APRIL 2004 – 11: (25) Which of the following best describes the question this set of procedures was designed to answer? A* Can a substance from dead bacteria transform living bacteria? B Can R bacterial cells survive heating? C Can dead bacterial cells confer immunity to a living host? D Can bacterial cells be isolated from a healthy host? APRIL 2004 – 11: (36) Coat color in mice varies greatly, ranging from black to grizzly gray, black-andwhite, spotted, or white. The nucleus from a body cell of a grizzly-gray mouse is fused with an egg from a black mouse from which the nucleus has been removed. The egg begins to divide and is then transplanted into a female white mouse. What will be the most likely coat color of the offspring? F Black G Black with white spots H* Grizzly gray J White JULY 2004 – 11: 33 All of the following are found in a DNA molecule except — A* carbon dioxide B deoxyribose C nitrogen D phosphate JULY 2004 – 11: 45 Which molecule is most responsible for determining an organism’s eye color, body structure, and cellular enzyme production? A Complex starch B Fatty acid C Carbohydrate D* Deoxyribonucleic acid OCTOBER 2005 – 11: 35 Proteins are produced according to a special code found in the control center of the cell. Which of these molecules carries this code? A* DNA B ATP C Glucose D Lipid FALL 2005 – 11: 28 “Thymine—guanine—thymine—cytosine” describes — F nucleotides within an RNA strand G* a sequence of bases within a DNA section H points of DNA separation during protein synthesis J tRNA codons for specific amino acids FEBRUARY 2006 – 11: 28 What do the results of this investigation indicate? F This trait is determined by the Y chromosome. G Red-eyed flies always produce red-eyed offspring. H White-eyed flies have many phenotypes for eye color. J* This trait is carried only on the X chromosome. APRIL 2006 – 10: 41 The information in the box identifies some of the organs of the kitten. Which of the following is identical for every cell in each of the four organs? A Amount of ATP B Function of cell C Size of cells D* Genes in DNA APRIL 2006 – 11: 40 In all plant and animal cells, the nucleus contains long molecules of DNA. Which of the following best describes the function of DNA? F DNA provides the shape and structure of the nucleus. G DNA packages materials for transport through the nucleus. H DNA carries materials into and out of the nucleus. J* DNA contains the blueprint for producing the whole organism. 45 Erwin Chargaff studied the DNA of organisms within a single species. Chargaff discovered that the amount of adenine is about equal to the amount of thymine. Which of these explains why the ratio of adenine to thymine is nearly 1:1? A* Adenine and thymine pair with each other. B Adenine binds with phosphates, while thymine binds with nitrates. C Adenine and thymine are identical in chemical composition. D Adenine bases contain a form of thymine.