ATP - what is created when no H+ is available?

I think it means "What's the chance that the son has ..." so you have to assume you've got to reject the female ones

That seems right! What exam board are you doing?


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The collision theory of kinetic energy doesn't really apply well to large macromolecules on the scale of enzymes and substrates. There's no complicated deep-seated physiological reason metabolic rate increases with exercise: it's all very simple. Your muscles contract; this introduces an energy demand; metabolic rate increases to meet this energy demand (via molecular and hormonal signalling). Heat production is a consequence of increased metabolic rate, not a cause.

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