DNA as Genetic Material

Explain the Hershey & Chase experiment and its implications for DNA as genetic material.

• The Hershey & Chase experiment proved that RNA is the genetic material.

• The Hershey & Chase experiment showed that DNA is the genetic material.

• The Hershey & Chase experiment concluded that proteins are the genetic material.

• The Hershey & Chase experiment demonstrated that lipids are the genetic material.

Describe the findings of Avery, MacLeod, and McCarty's experiment on DNA as genetic material.

• DNA is the genetic material as shown by the loss of transforming ability when DNA was enzymatically destroyed.

• The results showed that carbohydrates are responsible for genetic inheritance.

• The experiment confirmed that proteins are the genetic material.

• RNA was identified as the genetic material instead of DNA.

How is DNA organized in prokaryotes?

• No specific organization of DNA

• DNA dispersed throughout the cytoplasm

• Multiple linear chromosomes in the nucleoid region

• Single circular chromosome in the nucleoid region

What did Griffith's experiment involve?

• Fermentation of yeast

• Transformation of virulent bacteria into virulent bacteria

• Photosynthesis in plants

• Transformation of non-virulent bacteria into virulent bacteria

How did Hershey & Chase confirm that DNA is the genetic material?

• By measuring the temperature of the bacterial cells

• By observing the color change of the bacterial cells

• By using radioactive labeling to track DNA and protein separately, they observed that only DNA entered the bacterial cells.

• By counting the number of mutations in the bacterial cells

What role did Avery, MacLeod, and McCarty play in understanding DNA as genetic material?

• They were the first to sequence the entire human genome

• They demonstrated that DNA is the genetic material of bacteriophages.

• They invented the polymerase chain reaction (PCR)

• They discovered the structure of DNA

Discuss the structure of DNA in prokaryotes.

• The structure of DNA in prokaryotes is typically circular and organized into operons.

• DNA in prokaryotes is made up of histones.

• Prokaryotic DNA is stored in the nucleus.

• The structure of DNA in prokaryotes is linear and disorganized.

Why is Griffith's experiment considered a landmark in genetics?

• Griffith's experiment proved that bacteria could not exchange genetic material

• Griffith's experiment led to the discovery of RNA as the genetic material

• Griffith's experiment had no impact on the field of genetics

• Griffith's experiment showed that genetic material could be transferred between bacteria, leading to the discovery of DNA as the genetic material.

Explain the concept of DNA replication in prokaryotes.

• DNA replication in prokaryotes involves the synthesis of RNA instead of DNA

• DNA replication in prokaryotes is a conservative process where the original DNA strands are conserved

• DNA replication in prokaryotes occurs without the need for enzymes

• DNA replication in prokaryotes is a semi-conservative process where each original strand serves as a template for the synthesis of a new complementary strand.