A dichotomous key is created by scientist to identify objects and organisms.
Questions from a dichotomous key would be:
The fish have 1 eye or 2 eyes
Or if the alien have 2 heads or 1 head.
Answer:
The genotype is the part of the genetic makeup of a cell, and therefore of any individual, which determines one of its characteristics.
Hope this helps :)
The semi fluid matrix that surrounds organelles
in a cell is called the cytoplasm.<span>
<span>Organelles are the specialized structure with in a cell. Some
biologist says that organelle is a cell compartment. Mitochondria and
plastids are two broad classes of organelles. Cytoplasm is a thick substance
which fills each cell.</span></span>
The right answer is B. controlling the flow of blood to the skin
When the body temperature is below the set point, the hypothalamus activates several thermogenesis mechanisms:
* Vasoconstriction on the vessels near th skin by the sympathetic nervous system to reduce thermal exchanges between the skin and the surrounding environment.
* And increase in heat production:
-by muscular activity:
-by the metabolism:
