3. In the cork, Hooke saw there were cellular patterns that looked like prison cells, which is why we call cells, cells.
4. van Leeuwenhoek is known for is discovering bacteria.
5. The three parts of the cell theory are that all living things are made of cells, cells are the basic unit of structure and function in living things, and all cells come from preexisting cells.
Answer:
He extracted and observed DNA from white blood cells.
Explanation:
F.Miescher was a Swiss physician and a Biologist.He was 41 years old.With his experimental processes he was able to isolate many compounds which contains phosphate from the nuclei of white blood cells.He called these chemicals nuclein.(Nuclei acids) This took place in a Felix-Hope seyler's Lab, In Germany.The discovery was in 1869.
Answer:
SASH1 is underexpressed in breast cancer patients, whereas HER2 is overexpressed is breast cancer patients. The correct option is B.
Explanation:
Cancer is an abnormal cell growth which can occur in any part of the body. Alot of risk factors which can predispose one to cancer includes:
- smoking
- heavy alcohol consumption
- inherited genetic mutations.
When these cancer cells forms in the breast, it's known as breast cancer.
HER2(Human Epidermal Growth Factor Receptor 2) protein promotes the growth of cancer cells and located on the surface of both normal and cancer cells.
SASH1 (SAM and SH3 domain-containing protein 1) are tumor suppressor genes that are down regulated or under expressed in breast cancer.
Therefore, the gene labeled SASH1 fluoresced green while the gene labeled HER2 fluoresced red because SASH1 is underexpressed in breast cancer patients, whereas HER2 is overexpressed is breast cancer patients.
