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Is memory reliable?

P.E.E.P What memory is/ stance on question. Memory is a complex psychological construct, that can generally be seen as the storage and retrieval of information. Memory can be broadly conceptualised into shor...
MF
Answered by Meg F. • Psychology tutor
4321 Views

Explain how the proteins troponin, tropomyosin, actin and myosin regulate muscle contraction.

When the muscle is relaxed, tropomyosin fibres wrap around the actin filament, covering up the sites at which myosin can bind with actin. During muscle contraction, Ca2+ ions bind to troponin complexes on th...
AT
Answered by Alice T. • Biology tutor
7393 Views

Why do the atomic radii of the elements decrease across a period on the periodic table.

It may seem counterintuative that as the elemets' atomic numbers increase their atomic radii decrease. This is due to the increased electrostatic attraction (coulombic interaction) between nucleus and valenc...
DH
Answered by Daniel H. • Chemistry tutor
4058 Views

Find the value of the discriminant of x2 + 6x + 11

For a quadratic equation in the form ax^2+bx+c=0 the determinant is given by b^2-4ac and is used to help identify the types of roots of the equation. In this case, the determinant is (6)^2-4(1)(11) which is ...
EC
Answered by Emily C. • Maths tutor
9673 Views

Find the derivative of the function y=3x^2e^(2x)sin(x).

y is the product of three different function, so we would use the product rule in order to calculate the derivative of the curve. In order to apply the product rule we need to find the derivatives of each of...
SR
Answered by Shreya R. • Maths tutor
7146 Views