The correct answer is "A. carbon, hydrogen, oxygen and nitrogen".
Scientists believe that out of the 116 known elements, only 25 are used
by mammals (and therefore by humans). Out of the 25 elements that are
believed by scientists to support human life, only four of these
elements - carbon, oxygen, hydrogen, and nitrogen - make up about 96% of
the human body and are found in the basic structure of all biochemical
molecules within the human body. Because of this, carbon, hydrogen,
oxygen, and nitrogen are considered "the four essential elements"
supporting human life. However, it is also important to keep in mind
that although many of the other 25 elements present in the human body
are required in only small amounts, they play an important role in
keeping the body functioning correctly, as well.
Answer:
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Answer:
This is by co enzymes NADH and FADH2(adenine dinucleotide hydrogen and falvin adeninedinucleotide hydrogen. They are the co-enzymes that convey (electrons in )hydrogen atoms from the Kreb's cycle to the matrix of the mitochondria.They are not enzymes,but rather, enhances the work of enzymes.
These co enzymes are oxidized by the loss of hydrogen atoms.The hydrogen spits into electrons and protons in the matrix.The protons is pumped into the intramembranes by the proton motive force produced from the electron transport chains,and returned to the matrix, to generate electrochemical gradient needed for energy to be used by ATPase synthase for ATPs production
Explanation:
A codon is a sequence of three DNA or RNA nucleotides that corresponds with a specific amino acid or stop signal during protein synthesis. DNA and RNA molecules are written in a language of four nucleotides; meanwhile, the language of proteins includes 20 amino acids. Codons provide the key that allows these two languages to be translated into each other.
