The answer is; B
Cellular respiration occurs throughout the day in plants. It is during cellular respiration (breakdown of sugars made from photosynthesis) that ATPs are formed. The process of photosynthesis (that make the carbohydrates used in cellular respiration) process is what is government by the presence of sunlight.
Scientists study DNAto see the genetic changes that occur through generations.
A rising Mississippi River bottom could change the river's course in a future flood. ... "If the structures were not built and all, the river would eventually change course to that of the Atchafalaya River," said Russell Beauvais, Operations Manager for the U.S. Army Corps of Engineers.
26% is taken up by ocean sediment. 26% taken by net terrestrial uptake and Human activities, especially conventional farming activities and burning fossil carbon as fuel, have disturbed the carbon cycle's balance, leading to more carbon dioxide being released into the atmosphere than is being taken up by plants
Answer:
The ability of caffeine to inhibit adenosine receptors, plays a very important role in heightened alertness and sleeplessness.
Explanation:
"<em><u>Caffeine</u></em>" (<em>1,3,7-trimethylxanthine</em>) is an alkaloid obtained from plants. It has a chemical formula of C8H10N4O2.
Caffeine is generally <em>hydrophillic</em> but sufficiently <em>lipophilic</em> to pass through all biological membranes and readily cross the blood-brain barrier.
Therefore can bind with the adenosine receptors. Due to the blocking of adenosine inhibitory effects through its receptors held by paraxanthine and caffeine, it indirectly affects the release of <u>norepinephrine, dopamine, acetylcholine, serotonin, glutamate</u> e.t.c.
The release of the above-mentioned hormones have a great impact on the heightened alertness of the body, especially <em>dopamine</em> and <em>serotonin</em>.
