Chase and Hershey conducted experiments in 1952, using bacteriophages that revealed DNA, not protein, was the genetic material.
The experiments that revealed protein was not the genetic material were conducted by Martha Chase and Alfred Hershey in 1952. They were studying a bacteriophage, a virus that infects bacteria, which has two main structures: a protein coat known as the capsid, and a nucleic acid core that contains either DNA or RNA.
Hershey and Chase used radioactive markers to label the protein coat and DNA of the bacteriophage, respectively. Through their experiments, Hershey and Chase discovered that only the DNA entered the host bacteria upon bacteriophage infection, suggesting that DNA, not protein, is the genetic material. Their work was instrumental in establishing DNA as the molecule responsible for heredity.
#SPJ3
Temperature isthe term used to describe the average kinetic energy of the molecules in a shape.Temperature is used because it is difficult to measure the speed of anindividual gas molecule. Kinetic energy is proportional to the speed of themolecules. As the speed of the colliding molecules increases, the total kineticenergy of all the gas molecules also increases. The gas molecules gain energyand move faster and the temperature also goes up.
Increased fish predation
Increased marine bird migration distances
Increased marine mammal hibernation time
Answer:
Option (1)
Explanation:
The amount of carbon present in the ocean is inversely proportional to the pH level of water. This CO₂ amount present in the atmosphere may rise because of various types of human activities, that results in the increasing amount of dissolved CO₂ in the oceans. This in turn, again decreases the pH level of water. This water when reduces, it becomes saturated with the CO₂ and it also diminishes the source of calcium carbonate.
The increase in the ocean acidification leads to the significant reduction of the reef-building corals. As a result of which the temperature of the water increases and they are not able to assemble their skeletal parts.
Hence, the correct answer is option (1).