Answer:
D) Cell - Tissue - Organ - Organ system
Explanation:
Cell organization starting from cell to organ system shows the relationship among different levels of cell organization. The cell organization helps to know the structural and function of the organisms.
The correct order of cell organization:
Cell – tissue - organ - organ system
Different organsystems organise to for an organism. The cell is the simplest level and a group of cells (tissue) is the next higher level, a group of a tissues (organ) and a group of organs makes organ system which is the complex level of organization.
Answer:
The nucleus houses the genetic material of the cell: DNA. DNA is normally found as a loosely contained structure called chromatin within the nucleus, where it is wound up and associated with a variety of histone proteins. When a cell is about to divide, the chromatin coils tightly and condenses to form chromosomes. hope this helped!
Explanation:
I found a list of criticisms of the Minnesota study on the genetic influence of intelligence.
The list stated:
1) Bouchard relied on media coverage to recruit participants
2) Ethical concerns about the way Bouchard reunited the twins.
3) No adequate control to establish the frequency of contact between the twins prior to the study
<span>4) Assumption that the twins who are raised together experience the same environment = "equal environment assumption" is not accurate. </span>
Answer:
Pros of HeLa cells:
- HeLa cells are immortal ,easy to maintain and can be kept alive.
- HeLa cells easily contaminate cell lines and thus can be incorporated easily into target tissues.
Cons of HeLa cell:
- The HeLa cells can easily contaminate cell lines and a lack of regular monitoring leads to unwanted contamination of cell lines resulting in wastage.
Explanation:
HeLa cells are immortal cells that are used in scientific and medical research. These were obtained from Henrietta Lacks , a cervical cancer patient. These cells are well known for their immortality, rapid growth and high contamination rate. These were unique cancerous cells that kept on dividing and remained alive easily.