Answer:
An atom is composed of subatomic particles (electron, neutron and proton), a nucleus and electron cloud. Electrons are negatively charged particles that reside in an electron cloud that revolves around the central nucleus. ... A molecule is composed of two or more atoms that are held together by a strong chemical bond.
Explanation:
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Examples of protists that possibly evolving form endosymbiosis are Paramecium and amoeba.
As per the theory of endosymbiosis, it is likely that some non-photosynthetic organisms formed a symbiotic relationship with organisms that had the ability to photosynthesize using chloroplasts. These organisms then got the ability to photosynthesize due to the addition of chloroplasts into their cells, and this resulted in eukaryotic organisms with chloroplasts.
24.) C - a change in DNA coding can lead to a change in the protein that is produced, which changes structure, and therefore, function.
28.) C - recombinant DNA is artificial, and the other examples can occur naturally
29.) B - if DNA enters and successfully is produced within a plant cell, but is not originally from the plant cell, then the cell has been transformed.
Answer: The main function of NADH is the formation of energy in the form of Adenine tri phosphate (ATP).
Explanation:
In ATP production, the transfer of electron occurs by the NADH molecule. It also necessary for the reaction that occurs in the storage of energy molecules. NADH stands for nicotinamide adenine dinucleotide hydrogen. It produces energy through oxidation reduction reaction.