Answer is (E) : Amino acids (and thus proteins) also have nitrogen atoms; thus, the radioactivity would not distinguish between DNA and proteins.
Let me explain you why. Hershey and Chase conducted their experiment to show what is the genetic material that passes from one generation to another generation. Is it protein or DNA? For explaining this, they allowed the virus to grow in the presence of two different radio active elements.
In one set they grew viruses in the presence of P-32 radio-active element
In another set they grew viruses in the presence of S-35 radio active element.
The reason why they choose these two radio-active element was, phosphorus is present in DNA but not in proteins and similarly sulphur is found in proteins but not DNA.
These viruses were allowed to infect bacteria and the later was observed to be radio-actively labelled with P-32 but not S-35. This clearly showed that DNA is the genetic material which was passed from virus to bacteria.
Now if you choose Nitrogen for labeling, it won't help you in getting any conclusion since nitrogen is present in both proteins and DNA.
The answer u r looking for is-
1. all bacteria - glycolytic enzymes and membrane proteins
2. gram-positive bacteria - peptidoglycan
3. gram-negative bacteria -
4. viruses - envelope proteins
5. all bacteria and viruses - nucleic acids
Hope I’ve helped ;)
Through the actions of alleles
Answer:
Explanation:
https ://us05web.zoom.u s/j/850 39847778?pwd=T0F pQ3pIelJ oQ1RidWhvVF ppQ1lvQT09
copy and paste
It takes about one minute for a blood cell to make a complete circuit of the human body.
