Answer:
they require particles to transfer energy
Answer:
Explanation:
In eukaryotic cells, the membrane that surrounds the nucleus — commonly called the nuclear envelope — partitions this DNA from the cell's protein synthesis machinery, which is located in the cytoplasm.
Answer:
Linda has a higher level of "bad" cholesterol than Joyce.
Explanation:
bad cholesterol is in lots of fatty and dairy food such as meat,in this case pork, and butter.
Answer:
The right answer is the prey-predator relationship.
Explanation:
The given graph details conceivably show the prey-predator relationship, in which the prey appears in red and the predator is appeared in blue. It is seen that the predator population for the most part stays less than the prey, so they can get food without any problem.
The prey-predator relationship shows that in the event that the population of prey begin to increase, at that point the number of population in the predator would increase as well, as the predators have bountiful of food. However, when the number of preys in the prey begin diminishing, the predators begin to decrease because of the starvation.
Thus, The right answer is the prey-predator relationship.
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>.
