Answer:
They used radioactive labeling techniques to build two different types of phage.
Explanation:
In 1952, a set of experiments were carried out by American biochemists Alfred D. Hershey (1908-1997) and Martha Chase. They prepared two separate virus samples, one contained DNA labeled with a radioactive isotope and the other contained protein labeled with a different radioactive isotope. They grew the two types of viruses separately, infected bacteria with the two sets of phages and analyzed the bacteria for radioactivity. From the results obtained, Hershey and Chase concluded that the viral genetic material was DNA and not protein, reinforcing the observations previously made by Avery.
<span>Sublimation is the conversion between the solid and the gaseous phases of matter, with no intermediate liquid stage.</span>
Answer:
The difference in specific heat capacity between land and water
Explanation:
(A P E X)
Answer:
Changes that cannot be reversed are called irreversible changes
Example: if you cook an egg or if something goes bad. these changes can not be reversed.
How many trees were cut down during the year?
How many new factories opened last year?
How many factories in the community use fossil fuels?
hope this helps you
