Which of the following statements about focal adhesions is true?
option a: they may act as a type of sensory structure leading to cell growth.
option b: they anchor cells to the substratum.
option c: all of the choices are correct.
option d: they can be rapidly disassembled upon a changing environment.

The correct answer is Option C: "All of the choices are correct".

Explanation:

The term focal adhesions for cell's biology, also known as cell–matrix adhesions or FAs, refers to macromolecular assemblies that allow the interaction of the cells with its extracellular matrix. FAs may act as a type of sensory structure leading to cell growth, as well as to directional movement, differentiation and survival. FAs anchor cells to the substratum, acting as anchoring devices that maintain the cell morphology. FAs can be rapidly disassembled upon a changing environment, adapting to the new conditions of the extracellular matrix.

links? do you have a link? i don't see anything?

the energy generated by an individual's metabolism is calculated in met (metabolic equivalent of task). the met is the ratio of the work metabolic rate to the resting metabolic rate. one met is illustrated as 1 kcal per kilogram per hour, and is probably equal to the energy cost of sitting quietly.

1 met is equal to 1.162 watt per kg

1 kg is equal to 1000 grams

as the person weighs 80000 gm, that is, 80 kg.

therefore, 80*1.162 = 92.96

thus, the person expends 92.96 watts of power while at rest.