Answer:
If memory recalls correctly, that is a glass slider.
Explanation:
Answer:
E. The 32P was associated with the bacterial cells and 35S was associated with the phage particles.
Explanation:
Hershey and Chase's experiment proved that DNA serves as the genetic material of the cell.
This experiment used the bacteriophage which could infect the bacteria by integrating its DNA into the bacterial genome. For this, he used radioactive phosphorus and radioactive sulphur.
Phosphorus is a constituent of the DNA and sulphur is the constituent of the proteins. This means if the DNA is transferred, then radioactive Phosphorus will be transferred but if proteins are transferred then radioactive sulphur is transferred.
He found the radioactive phosphorus attached to the bacteria and sulphur to the phage itself. This suggested that the DNA material is transferred and acts a hereditary material and not the protein.
Thus, Option-E is correct.
Answer:
used to observe small objects, even cells
Explanation:
The image of an object is magnified through at least one lens in the microscope.
Answer and Explanation:
The columns of the periodic table are able to inform the number and type of connection that the elements can make. This is because the number of each column informs the number of electrons in the valence layer of the elements. The amount of electrons in the valence layer is what determines the amount and type of bond that the elements make. The elements in column 1, for example, have 1 electron in the valence layer and therefore will make 1 covalent bond. The elements of columns 15, as another example, have 5 electrons in the valence layer and will need to make 3 ionic or covalent bonds.
