Although the biochemical study of reaction rates and free energies is important for understanding each biological reaction individually, these studies do not provide an accurate picture of what is happening to reactants and products inside the cell
Why not?
Chemical reactions inside the cell do not reach a state of equilibrium because both reactants and products are typically used in more than one set of reactions, which means their concentrations are constantly fluctuating. As a result, the forward and reverse reaction rates are almost never identical.
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Two-component signal transduction systems are found in the Bacteria, but not in Archaea.
Answer the following statement true (T) or false (F)
Blood entering the heart from the body passes through the heart chambers and lungs in the following order:
A. right atrium, right ventricle, lungs, left atrium, left ventricle. B. left atrium, left ventricle, lungs, right atrium, right ventricle. C. right atrium, left atrium, lungs, right ventricle, left ventricle. D. left atrium, right atrium, lungs, left ventricle, right ventricle. E. right ventricle, left ventricle, lungs, left atrium, right atrium.
Which one of the following are structures in the body that are composed of two or more different tissue types joined together to perform a specific function?
A) tissues B) organs C) organ systems D) junctions E) body cavities
During release of neurotransmitter, (i) ____ influx promotes exocytosis of synaptic vesicle via activation of (ii) ____________.
a) (i) Ca2+, (ii) SNARE proteins b) (i) Na+, (ii) SNARE proteins c) (i) Ca2+, (ii) Connexin d) (i) Na+, (ii) Connexin