Ap biology catabolic and anabolic pathways are often coupled in a cell because

“The characters of the individual are referable to paired elements (genes) in the germinal matter that are held together in a definite number of linkage groups…. The members of each pair of genes separate when germ cells mature…. Each germ-cell comes to contain only one set…. These principles…enable us to handle problems of genetics in a strictly numerical basis, and allow us to predict…what will occur…. In these respects the theory [of the gene] fulfills the requirements of a scientific theory in the fullest sense.… It is difficult to resist the fascinating assumption that the gene is constant because it represents an organic chemical entity. This is the simplest assumption that one can make at present, and since this view is consistent with all that is known about the stability of the gene it seems, at least, a good working hypothesis.” Thomas Hunt Morgan ( 2022 ).

Homeostasis is a concept central to the idea of stress. [29] In biology , most biochemical processes strive to maintain equilibrium (homeostasis), a steady state that exists more as an ideal and less as an achievable condition. Environmental factors, internal or external stimuli, continually disrupt homeostasis; an organism's present condition is a state of constant flux moving about a homeostatic point that is that organism's optimal condition for living. [30] Factors causing an organism's condition to diverge too far from homeostasis can be experienced as stress. A life-threatening situation such as a major physical trauma or prolonged starvation can greatly disrupt homeostasis. On the other hand, an organism's attempt at restoring conditions back to or near homeostasis, often consuming energy and natural resources, can also be interpreted as stress. [31]

Ap biology catabolic and anabolic pathways are often coupled in a cell because

ap biology catabolic and anabolic pathways are often coupled in a cell because

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