Answer:
There is a great difference between light and scanning electron microscope. The source of illumination is light rays in light microscope while in scanning electron microscope electrons are the source of illumination.
The resolving and magnification power of scanning electron microscope is much greater than that of a light microscope. The magnifying power of a light microscope is 1000X and of electron microscope is 10,00,000X.
In light microscope image is seen through the eyepiece while in scanning electron microscope it is seen on a fluorescent screen. Even small specimens up to 0.1 micrometers can be seen by scanning electron microscope which is not possible to see by light microscope.
Well, it depends but adults can weigh up to 420,000 pounds
Answer:
False
"The energy contained in the food we eat is used to synthesize the energy that directly powers all of our cellular activities".
Explanation:
The food we eat undoubtedly contains energy. This energy is stored in the bonds of the molecules that make up the food. However, the food undergoes the process of digestion to yield glucose (a sugar). This glucose sugar is used in the process of CELLULAR RESPIRATION to synthesize a form of chemical energy usable by cells called ATP.
ATP or Adenosine triphosphate is a molecule that stores chemical energy in living cells. It is the molecule that directly powers all of our cellular activities. Hence, the statement in this question is FALSE. The correct statement should be "The energy contained in the food we eat is used to synthesize the energy that directly powers all of our cellular activities".
The correct answer is D) The codon AUG must be identified.
What must occur for protein translation to begin is that the codon AUG must be identified.
The process starts when the 5AUG or start codon is identified. In the polypeptide chain, the 5AUG is the first amino acid. We are talking about Transition, the process when the genetic code in an RNA molecule has to be decoded in a polypeptide chain in order to deliver an amino acid sequence. In this complex transition system, there are important components included such as ribosomes, transfer RNA, and mRNA.
Answer and Explanation:
Normally happening synapses animate receptors and are called agonists. Truth be told, an entire range of potential outcomes exists, some of the time called the agonist range. A few medications do invigorate receptors similarly as do the characteristic synapses and are in this manner agonists. Different medications really obstruct the activities of a characteristic synapse at its receptor and are called rivals. Genuine enemies just apply their activities within the sight of agonist; they have no inherent action of their own without agonist. Still different medications do something contrary to what agonists do and are called opposite agonists. Hence, drugs acting at a receptor exist in a range from full agonist to enemy to opposite agonist. The agonist range for G protein-connected receptors is the extremely same for ligand-gated particle channels Thus,full agonists change the adaptation of the receptor to open the particle channel to the maximal sums and frequencies permitted by that coupling site.
This at that point triggers the maximal measure of down-stream signal transduction that can be intervened by this coupling site. The particle channel can open to a significantly more prominent degree and considerably more much of the time than with a full agonist alone, yet this requires the assistance of a subsequent receptor site, that of positive allosteric modulator. Particles channel connected receptors act along an agonist range and medications can deliver conformational changes in these receptors to make any state from full agonist, to halfway agonist, to quiet foe, to reverse agonist. These states happen overwhelmingly with intense organization of specialists which work over the agonist range. These reaches from the maximal opening of the particle channel from conformational changes brought about by full agonist to the maximal shutting of the particle channel brought about by a backwards agonist. Such changes in adaptation brought about by intense activity of operators over this range are liable to change after some time, since these receptors have the ability to adjust, especially when there is interminable or unnecessary introduction to them.
