Answer:
Hypothalamic-pituitary-adrenal axis (HPA axis)
Explanation:
- The three-stage process describing the physiological changes that take place in the body when it is under stress is known as general adaptation syndrome (GAS).
- The model describing the three-stage process was given by the scientist Hans Selye.
- According to this model, the responses in the body that occur during stress is regulated by the Hypothalamic-pituitary-adrenal axis (HPA axis) where the brain senses the stress and then the signals travel from the hypothalamus to the pituitary and finally the body releases cortisol from adrenal glands that contributes to the various changes.
Answer:
In biology, evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection. ... Evolution relies on there being genetic variation in a population which affects the physical characteristics (phenotype) of an organism.
Explanation:
Hope this helps!
Answer:
Explanation:
Cells need checkpoints to ensure that no error is present in the DNA or even in the cellular surroundings. It is critical that all "boxes" are checked before continuing because this ensures that no major errors are faced down the line. Cells are basic unit of life so if cells are not accurate or full of errors then tissues are affected, which affects organs, and eventually organ system and in final the whole organism. Thus, checkpoints ensure that errors are caught early and dealt with properly.
If cell did not get checked at certain phases, mistakes would go by unnoticed which could affect the whole organism (see my explaination above). Also, checkpoints ensure that cell growth is controlled (that is unwanted replication do not occur). If there are no checkpoints then cell can continue to grow and eventually uncontrolled growth of cells is referred to as cancer.
Answer:
The substance is called agar. it's a jelly like substance that sets hard.
