The four stages of cellular respiration do not function independently. instead, they function

The correct answer will be- in coupled and coordinated manner.

Explanation:

Cellular respiration is a complex process which involves the breakdown of the sugar molecule to provide energy in the form of ATP.  The process takes place in the four stages: Glycolysis, Krebs cycle,  link reaction, Krebs cycle and the electron transport chain.

These stages are interlinked to each other as the product and intermediates of one set of reaction act as a substrate to another set of reactions like the pyruvate of glycolysis acts as a substrate in the link reaction. Also, the NADH formed in glycolysis and Krebs cycle is used in the electron transport chain.

Thus, in a coupled and coordinated manner is the correct answer.

each of the 46 original chromosomes splits into two daughter chromosomes, so there are two sets of 46 daughter chromosomes that end up in each cell. human cells have 46 chromosomes. each chromosome consists of a pair of identical chromatids attached together by a structure called a centromere.

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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