Quiz: Identifying the substance of the gene
Read each of the sentences that describe the results of the Hershey-Chase experiment. Drag each statement to the correct bacteriophage experiment.
Bacteria marked with phorphorus 32 radioctivity is found inside the infected bacterium results confirm that dna is the genetic material of the bacteriophage bacteriophage contains radioactive isotope that is used to mark dna Bacteria marked with phorphorus 35 no radioctivity is found inside the infected bacterium results confirm that protrein is not the genetic material of the bacteriophage bacteriophage contains radioactive isotope that is used to mark protein
Griffith showed that a molecule existed that affected information transfer between generations, but he had not yet identified the molecule. Avery took Griffith's work a step farther, analyzing cell extracts in great detail.1. From the results shown here, identify the molecule that was at work:
DNA
Hershey and Chase started with a virus called a .They used the radioactive isotope sulfur-35 to label the of the virus and phosphorus-32 to label the of the virus. They allowed the tagged virus to infect bacteria and studied the results. Hershey and Chase found that the only radioactive isotope within the bacteria was . This result indicated that the genetic material inserted by the virus to infect the bacteria was .
Hershey and Chase started with a virus called a bacteriophage .They used the radioactive isotope sulfur-35 to label the protein of the virus and phosphorus-32 to label the DNA of the virus. They allowed the tagged virus to infect bacteria and studied the results. Hershey and Chase found that the only radioactive isotope within the bacteria was 32P. This result indicated that the genetic material inserted by the virus to infect the bacteria was DNA
Which statements describe a bacteriophage? Select all that apply.
It is a type of virus that infects bacteria, It is a virus consisting of a protein coat and a DNA core.
What are three tasks that DNA must be able to perform in all organisms? Select three answer choices.
It must store genetic information, It must instruct cells to produce needed molecules, It must copy itself
Scientists wanted to learn more about Griffith's experiment. They extracted a mixture of various molecules from the heat-killed bacteria. They found that Choose... transformation transcription translation no longer occurred when they treated the mixture with enzymes that destroyed Choose... DNA carbohydrates proteins RNA lipids . This experiment supports the hypothesis that Choose... DNA lipids RNA proteins carbohydrates is the genetic material.
transformation, dna, dna
When does transformation occur?
when a cell receives foreign DNA that is expressed as a new characteristic
