Bio 150 Final (2024 Latest Update)Correct 100%(Graded A+)

In an analysis of the nucleotide composition of a double stranded DNA molecule, which of the following will not be found? A. C = G B. C + G = A + T C. A/T = C/G D. A - C = T - G - ANSWER B. C + G = A + T A controlled experiment.... A. Includes at least two groups, one of which does not receive the experimental treatment. B. Proceeds at a slow pace to guarantee that the scientist can carefully observe all results. C. Includes at least two groups, one different from the other by two or more variables. D. Includes one group for which the scientist controls all variables. - ANSWER A. Includes at least two groups, one of which does not receive the experimental treatment. Zebras have 22 unique chromosomes (n = 22). A zebra's diploid cells would contain _____________ chromosomes while a haploid cell would contain _____________ chromosomes. A. 11, 22 B. 22, 11 C. 22, 44 D. 44, 22 - ANSWER D. 44, 22 If a double-stranded DNA sample was composed of 32% thymine, what would be the percentage of ADENINE in the same double-stranded DNA sample? A. 16 B. 18 C. 32 D. 46 - ANSWER C. 32 If a double-stranded DNA sample was composed of 32% thymine, what would be the percentage of CYTOSINE in the same double-stranded DNA sample? A. 16 B. 18 C. 32 D. 46 - ANSWER B. 18 Double stranded, helical DNA........ A. Is used to synthesize (make) messenger RNA (mRNA). B. Serves as a template for protein synthesis. C. Contains two identical single strands of DNA. D. Has four nitrogenous bases: Uracil, Adenine, Cytosine, and Guanine. - ANSWER A. Is used to synthesize (make) messenger RNA (mRNA). Hershey & Chase (1952) were able to determine _____________ because _____________. A. That genes were made up of DNA; radioactive phosphorous was found within bacterial cells infected by T2 bacteriophages. B. That genes were made up of DNA; radioactive sulfur was found within bacterial cells infected by T2 bacteriophages. C. The structure of DNA; x-ray crystallography images suggested a double helix. D. The structure of DNA; the number of pyrimidines equal the number of purines. - ANSWER A. That genes were made up of DNA; radioactive phosphorous was found