Answer:
As John is testing the effect of temperature on the solubility of sugar in water. To test this, he will measure the amount of sugar dissolved at different temperature level.
After the macrophage fails the Helper T Cell stimulates the B cells (create antibodies) if pathogen is extracellular and Cytotoxic T Cells (killer T cells, release perforin) if pathogen is intracellular. Once the pathogen is killed the B Cells create Memory B Cells and the Killer T Cells create memory T Cells.
<span>Hope that's helpful.</span>
Answer:
Carcinogenic
Explanation:
A carcinogenic substance is able to modify or damage the genome in a way which promotes the formation of cancerous cells. Cell cycle checkpoint proteins are very crucial for the progression of normal cell cycle. They check for any anomaly in their designated step and halt the process if it is detected. Repair mechanism is activated and cell cycle does not progress till the damage has been repaired.
Here, the pollutant alters the structure of these proteins such that they lose their function. They are not be able to stop cell cycle from progressing even if there is some damage in the genome. The cell divides and gives rise to more damaged cells. Eventually these cells lose their normal function and just keep dividing due to which their division rate becomes double of the normal rate. It can ultimately give rise to cancer which is why the chemical is carcinogenic.
Answer:
CAAGGUCUC
Explanation:
In an RNA strand, the bases would be Thymine, Uracil, Guanine and Cytosine.
The difference in the bases between DNA and RNA is that in RNA the complementary base of thymine is uracil, but in DNA the complementary base of thymine is adenine.
cancer cells are cells that divide and reproduce abnormally with uncontrolled growth... the stem cell theory of cancer proposes that among all cancerous cells, a few act as stem cells that reproduce and sustain the cancer, similar to normal stem cells normally renewing and sustaining our organs and tissues.
