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astraxan [27]
4 years ago
13

Define the term “fitness”

Biology
2 answers:
aleksandr82 [10.1K]4 years ago
7 0

Answer:

Fitness is a term that describes the survival and reproductive output of an individual in a population relative to other members of the population.

Explanation:

liq [111]4 years ago
6 0
The condition of being physically fit and active
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Two to six hours later after death, all skeletal muscles of the body become rigid and stiff. This situation is defined as Rigor mortis. It occurs from the lack of ATP along with the production of lactic acid. When breathing stopped permanently in the body, oxygen level also reduced; that’s why body muscles cannot go for any aerobic respiration to produce any ATP. 

As we know already, during every muscle construction, ATP needs to break the cross-bridge between Myosin and Actin. So if there is no ATP produced in the body, separation of Myosin molecules from Actin molecules cannot happen anymore. This situation leads for rigor mortis.

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