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.
Answer:
B. hydrogen bond
Explanation:
The double helix is held together by hydrogen bonds between the bases
Answer:
I. Weight
Explanation:
Weight is environmental and not inherited
The food we eat can change our weight; it can cause weight gain...
Answer:
here is the answer
Explanation:
Scarlet king snakes cannot camouflage and so instead they mimic a dangerous neighbor. Scarlet king snakes have evolved over the years to look like coral snakes so that they could scare away other predators that may be dangerous and would want to hurt them
this is the reason
----- now the simplified answer
the scarlet snake has a very random ( rare ) genetic variation , it mimcs or
( behaves a like or looks like coral snake ) , it turns out that this trait helps the snake high chance of survival, snake with this kind of trait are often likely to reproduce and pass their traits to their children
now most of the scarlet snakes have this trait
trait ; a distinguishing quality or characteristic, typically one belonging to a person.
thank you
The stomata of leaves are surrounded by guard cells. The guard cells help the leaves to regulate the rate of transpiration of water from the leaves by opening and closing the stomata. When water enter the guard cells, they swell and bulge and this makes the stomata to open. So, with high water pressure, the guard cells will stimulate the stomata to open. The reverse will be the case if the water pressure is low.
