Biology DNA/RNA Final Exam

B - Answer- Griffith transformation experiments A.) changed proteins into DNA B.) caused harmless bacteria to become deadly C.) resulted in DNA molecules becomimg proteins D.) were designed to show the effect of heat on bacteria D - Answer- Using radioactive tracers to determine the interactions of bacteriophages and their host bacteria Hershey and Chase demonstrated without question A.) genes are composed of protein molecules B.) DNA and proteins are actually the same molecules located in different parts of cells C.) bacteria injected their DNA into the cytoplasm of bacteriophages D.) DNA is a molecule that stores genetic information in cells D - Answer- Molecules of DNA are composed of long chains of A.) amino acids B.) fatty acids C.) monosaccharides D.) nucleotides C - Answer- The nucleotide consists of A.) sugar, protein, adenine B.) sugar, amino acid, starch C.) sugar, phosphate group, nitrogen base D.) sugar, phosphate, nitrogen base C - Answer- Adenine: thymine A.) protein: DNA B.) Watson: Crick C.) guanine: cytosine D.) guanine: thymine C - Answer- Of the four nitrogen bases in DNA, which two are purines and which two are pyrimidines A.) purines:adenine, thymine: pyrimidimes: uracil, cytosine B.) purines:adenine, pyrimidimes: guanine, cytosine C.) purines:adenine, guanine pyrimidimes: thymine, cytosine D.) purines:uracil, thymine:pyrimidimes: guanine, cytosine B - Answer- Watson and Crick built models that demonstrated A.) DNA and RNA have the same structure B.) DNA is made of two strands that twist into a double helix C.) guanine forms hydrogen bonds with adenine D.) thymine forms hydrogen bonds with cytosine