genetics quiz 7 study for test 3

Hershey and Chase used labeled DNA and protein to determine that DNA is the genetic material in bacteria. Answers: True False

False

In 1953, Watson and Crick published a paper which described the structure of DNA. Answers: True False

Selected Answer: True

Avery, et al. (1944) determined that DNA is the genetic material in T2 bacteriophage. True False

false

The transforming principle discovered by Griffith is RNA. true false

false

It became apparent to Watson and Crick after completion of their model that the DNA molecule could carry a vast amount of hereditary information in which of the following? A. sequence of bases B. phosphate-sugar backbones C. complementary pairing of bases D. side groups of nitrogenous bases E. different five-carbon sugars

sequences of bases

Given the figure below, is it DNA or RNA? ________ Is the arrow closest to the 5' or 3' end?________ Suppose that the dinucleotide to the right was cleaved with the enzyme spleen diesterase which breaks the covalent bond connecting the phosphate to the 5' carbon. After such cleavage, to which base is the phosphate now attached, A or T? ________ A. DNA, 3' end, A B. RNA, 3' end, A C. DNA, 5' end, A D. DNA, 3' end, T E. RNA, 3' end, T

A. DNA, 3' end, A

Which of the following statements about the 5' end of a polynucleotide strand of DNA is correct? A. The 5' end has a hydroxyl group attached to the number 5 carbon of ribose. B. The 5' end has a phosphate group attached to the number 5 carbon of ribose. C. The 5' end has phosphate attached to the number 5 carbon of the nitrogenous base. D. The 5' end has a carboxyl group attached to the number 5 carbon of ribose. E. The 5' end is the fifth position on one of the nitrogenous bases.

A. The 5' end has a hydroxyl group attached to the number 5 carbon of ribose.

It became apparent to Watson and Crick after completion of their model that the DNA molecule could carry a vast amount of hereditary information in which of the following? A. sequence of bases B. phosphate-sugar backbones C. complementary pairing of bases D. side groups of nitrogenous bases E. different five-carbon sugars

A. sequence of bases

Reverse transcriptase is an enzyme found in association with retroviral activity. It has the property of A. synthesis of DNA from an RNA template. B. synthesis of RNA from a DNA template. C. requiring no template. D. translation. E. most lysozymes.

A. synthesis of DNA from an RNA template.

In trying to determine whether DNA or protein is the genetic material, Hershey and Chase made use of which of the following facts? Answers: A. DNA contains sulfur, whereas protein does not. B. DNA contains phosphorus, whereas protein does not. C. DNA contains nitrogen, whereas protein does not. D. DNA contains purines, whereas protein includes pyrimidines. E. RNA includes ribose, whereas DNA includes deoxyribose sugars.

B. DNA contains phosphorus, whereas protein does not.

Which of the following clusters of terms accurately describes DNA as it is generally viewed to exist in prokaryotes and eukaryotes? A. Double-stranded, parallel, (A+T)/C+G)=variable, (A+G)/(C+T)=1.0 B. Double-stranded, antiparallel, (A+T)/C+G)=variable, (A+G)/(C+T)=1.0 C. Single-stranded, antiparallel, (A+T)/C+G)=1.0, (A+G)/(C+T)=1.0 D. Double-stranded, parallel, (A+T)/C+G)=1.0, (A+G)/(C+T)=1.0 E. Double-stranded, antiparallel, (A+T)/C+G)=variable, (A+G)/(C+T)=variable

B. Double-stranded, antiparallel, (A+T)/C+G)=variable, (A+G)/(C+T)=1.0

The basic structure of a nucleotide includes the following components: A. amino acids B. tryptophan and leucine C. base, sugar, phosphate D. mRNA, rRNA, tRNA E. phosphorus and sulfur

C. base, sugar, phosphate

Which of the following are nitrogenous bases of the purine type? A) adenine and thymine B) cytosine and guanine C) uracil and cytosine D) guanine and adenine E) thymine and uracil

D) Guanine and adenine