The end result: Atoms with six protons and six neutrons — carbon. ... It can also bond with up to four other atoms because of its electron arrangement. Atoms are arranged as a nucleus surrounded by an electron cloud, with electrons zinging around at different distances from the nucleus
Answer:
b. carbon dioxide
Explanation:
This metabolic pathway is called the Krebs cycle after the scientist who first discovered it in 1937. The Krebs cycle is further broken down by pyruvic acid, obtained in the glycolysis process. The process proceeds in two stages. The first is the degree of decomposition of the bicarbonate residue.
The Krebs cycle is the main metabolic pathway for the breakdown of organic matter and the production of energy in the form of reduced coenzymes, which will then be incorporated into ATP.
Answer:
Yes, the nodes of Ranvier spaced equally along the axon to allow the action potential at first node to cause depolarization of second node.
Explanation:
Yes, nodes of Ranvier are equally spaced along the length of the axon. When an action potential reaches the first node, it generates the ionic movement in the cytosol and extracellular fluid so as to depolarize the membrane up to the threshold at the second node. This opens the voltage-gated Na+ channels at the second node to allow the ions to flow followed by generation of an action potential at the second node.
Now, as the action potential is generated at the second node, the stimulated ionic movement opens the voltage-gated Na+ ion channels at the third node and the process is repeated. Hence, equally spaced nodes of Ranvier ensure that the action potential at one node can stimulate the depolarization at the next node.
Answer:
Charles Darwin's theory of evolution states that evolution happens by natural selection. Individuals in a species show variation in physical characteristics. As a consequence those individuals most suited to their environment survive and, given enough time, the species will gradually evolve.
Explanation:
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