Dna Structure And Replication - Introduction to Genetic Analysis

Alfred Hershey and Martha Chase examined transformation using bacteriophage (bacterial DNA virus)and bacterial cells.In this experiment,how is transformation (altered phenotype)displayed?

A)The bacteria are transformed (by phage DNA)into virus synthesizing cells.
B)The bacteria are transformed from live to dead by the virus.
C)The bacteria are transformed from rough to smooth by the virus.
D)The bacteria are transformed into a virus.
E)Transformation is not exhibited by a virus-infected bacterial cell.

Answer

Question 2

(Multiple Choice)

Free

Alfred Hershey and Martha Chase examined transformation using bacteriophage (bacterial DNA virus)and bacterial cells.In these experiments,they used radioactivity to label nucleic acids (in this case DNA)and proteins.What do radioactive sulfur and phosphate specifically label?

A)Sulfur labels DNA,and phosphate labels protein.
B)Sulfur labels both protein and DNA.
C)Phosphate labels both protein and DNA.
D)Sulfur labels protein,and phosphate labels DNA.
E)None of the answer options are correct.

Answer

Question 3

(Multiple Choice)

Free

Chargaff's rules do NOT hold for which of the following genome types?

A)yeast
B)bacteria
C)single-stranded DNA virus
D)invertebrates
E)Archaeobacteria

Answer