Answer:
Harshey and chase labeled T2 bacteriophage with radioactive sulfur and radioactive phosphorus. As DNA contains phosphorus, not protein and protein contain sulfur, not phosphorus, therefore, the presence of radioactivity in cell can determine which is the genetic material
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Then Harshey and Chase infected <em>E.coli</em> with T2 bacteriophage and centrifuged the cell. They found radioactive phosphorus in cell pellet and radioactive sulfur in supernatant.
So by this experiment, they concluded and proved that DNA is the genetic material that gets transfer from one generation to another.
Answer:
Animal by-products.
The USDA (United States Department of Agriculture) defines an animal product as anything made from an animal, excluding muscle meat.
I think it is control group
Answer:
Electrons are many thousand times smaller than the nucleus and negatively charged.
Explanation:
Electrons possess negligible mass and carry a negative charge.
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1. A : forming oxide and react with alkali
3. C : replacement reaction
4. C : in neutralisation the product is always water and a salt
