Cells do need food. In a process known as cellular respiration, cells convert biochemical energy (oxygen as food) from nutrients into adenosine triphosphate (ATP), and then release waste products.
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Answer:
It accelerates the production of a second messenger.
Explanation:
Adenylyl cyclase is an enzyme capable of converting ATP molecules into cyclic adenosine monophosphate AMP (cAMP). The cAMP molecule is considered to be a second messenger that transfers the hormonal signal (i.e., epinephrine) inside the cell. Subsequently, cAMP activates molecular signaling events by binding and thus activating cAMP-dependent protein kinase A (PKA). Finally, this last protein (PKA) phosphorylates different proteins that control many diverse cellular processes.
Answer:
E
Explanation:
Wind blowing across the body surface increases transpiration of the skin. The winds reduce the local air pressure above the skin allowing the sweat to evaporate faster. As the sweat evaporates, it carries with it heat from the body. This cools the skin much faster than on a non-windy day. This is why a breeze feels so cool on the human skin on a hot day.
Answer:
Growth rate can be calculated by dividing the change in the number of organisms from one point in time to another by the amount of time in the interval between the points of time.
There isn't really a definition for this.