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Explain the route and role of calcium ions in the Sliding Filament theory of muscle contraction

ROUTE: when an action potential arrives at the neuromuscular junction, Calcium ions are released from the sarcoplasmic reticulum, into the sarcoplasm, wh...

Answered by Erin C. • Biology tutor

15712 Views

Describe in detail three key features of the Classical Period (1750-1830)

Periodic phrasing - the organising of musical ideas into shorter, balanced phrase lengths of typically 2 to 4 measures. The phrases consist of two parts, an antecedent and consequent. The antecedent...

Answered by Hannah D. • Music tutor

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Johnny take 4 hours 50 minutes to drive 213 miles to Manchester. He then takes the train to Liverpool. Liverpool is 37 miles from Manchester and the train travels at 90mph. Calculate Johnny's average speed for his total journey in mph.

Total journey average speed = (total distance travelled ÷ total time taken).Total distance travelled = 213 miles + 37 miles = 250 milesTotal time taken (hours) = 4 + (50÷...

Answered by Steven W. • Maths tutor

2729 Views

What is the difference between the imperfect and the perfect tense?

The perfect tense, or "passé composé" is used to demonstrate an action that is in the past and has been completed, for example "Yesterday, I went to the shop", "Hier,

Answered by Phoebe T. • French tutor

1635 Views

What is the derivative of y = (3x-2)^1/2 ?

Use the chain rule, u = 3x-2dy/dx = dy/du du/dxdy/du = d(u^1/2)/du = 1/2 u ^-1/2power down and minus 1du/dx = 3constants =0so, dy/dx = 3 1/2 (3x-2)^-1/2= 3/2 (3x-2)^-1/2

Answered by Chloe J. • Maths tutor

8670 Views