Answer:
There is a correlation between cells of the living beings and the bacterial cells that infect the body. Virchow observations suggested that all cells arise from pre-existing cells; and that an imbalance in blastema (fluid that create new cells ) caused diseases.
Answer:
The base adenine pairs with thymine, and the base cytosine pairs with guanine.
Explanation:
From Chargaff's discovery, which was that the DNA of any given species contains equal amounts of adenine and thymine, and equal amounts of cytosine and guanine, we can deduce that if there is an equal amount of two bases in DNA, those two bases must pair together. From this information, we can then go on to say that since there are equal amounts of adenine and thymine, they pair together, and since there are equal amounts of cytosine and guanine, they also pair together.
DNA has to be divided into the two nucleotide chains that build it, so that new chains can be started to form. These new chains will connect with the old ones.
Answer:
Chemical inhibitors likely bind to receptors and interfere with receptor activation or signal-receptor binding.
Explanation:
The signaling pathway requires the generation of a signal, its reception by target cells, signal transduction and cellular response. According to the given information, the inhibitors are the large and non-polar molecules. The cell membranes do not allow free passage of large molecules. Therefore, these inhibitors are most likely to interfere with signal reception by target cells.
For the purpose, the inhibitors may bind to the receptors present on the surface of target cells and thereby, not allowing the binding of the signaling molecule to the receptors and the activation of the receptors. Unless the signaling molecule binds to its receptors present on the surface of target cells, receptors remain inactive and there is no signal transduction.