Please help me with this Biology questionn:(

Question

Use the following information to answer the next two questions. 

Muscle Contraction

In an experiment, the strength of a neural stimulus and the resulting muscle contraction are compared. A single motor neuron that synapses with one muscle fiber is observed in this experiment. One end of the muscle fiber is attached to a mass. The following data was obtained from the experiment.

Analyze the data and answer the following questions.

Number of Trials	Strength of Stimulus (mV)	Mass Lifted by Muscle Contraction (g)
1	20	0
2	40	0
3	60	50
4	80	Not Tested
5	100	Not Tested
6	120	50

1) Does the data in the table provide sufficient evidence of the value for the threshold potential? Why or why not?



2) A student remarked that at 180 mV of stimulus, it is expected that 100 g mass is lifted by the muscle fiber.

Do you agree or disagree? Why or why not?

Answer 1

1) The table does not provide enough data to determine the threshold potential. Although it is evident that a 60mV stimulation is enough to lift 50 grams, it would be better to determine the threshold potential between the range of 40 and 60mV.

2) I would disagree with this claim given the fact that there is not enough data to support this. For one, there is no data on the amount of mass lifted at 80 and 100 mV. A potential inverted U curve might indicate that the maximum mass lifted at 80 and 100 mV may be greater than the 50 grams lifted with 120 mV. Overall, there is not enough data to predict the amount of mass lifted with a 180 mV stimulation.