The correct answer is resistance stage.
Hans Selye was a very important endocrinologist working in the field of biological stress. He developed the General Adaptation Syndrome (GAS) which is a model describing an animal's response to stress. GAS is comprised of three stages; the alarm, the resistance and the exhaustion stage.
During the resistance stage, the body's glands produce and secrete several hormones which protect the individual from the perceived stressor. Some of the hormones produced at this stage are the glucocorticoids.
➜ Kidneys are bean-shaped and located at the back of abdomen, one on either side of backbone. Its inner concave surface has a depression called hilum through which renal artery enters and renal vein leaves the kidney. Kidney has two regions: outer cortex and inner medulla. Each kidney has a large number of filtering units called nephrons.
<u>Note</u>: See picture attached to get the idea.
Explanation:
In molecular biology, transformation is the genetic alteration of a cell resulting from the direct absorption, incorporation and expression of exogenous genetic material (exogenous DNA). Exogenous DNA is found in the environment and is introduced through the cell membrane. The transformation occurs naturally in some species of bacteria, although it can also be done by artificial means. For the transformation to occur, the bacteria must be in a state of competition, which can occur as a time-limited response to environmental conditions, such as lack of nutrients and high cell density. A transformation is one of three processes by which exogenous genetic material can be introduced into a bacterial cell. The other two are conjugation and transduction. The transformation of eukaryotic cells is called transfection.
The term transformation is also used, more generally, to describe mechanisms of DNA or RNA transfer in molecular biology (that is, taking into account more than the genetic consequences). For example, the production of transgenics such as transgenic corn requires the insertion of new genetic information into the corn genome using the appropriate DNA transfer mechanism; The process is commonly called transformation.
RNA can also be transferred into cells using similar methods, but this does not normally cause heritable changes and therefore is not a real transformation.
