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How do the components of a plasma membrane affect the movement of substances into and out of a cell, and why is this regulation important?

Phospholipids and proteins regulate the movement of substances through the membrane, thereby allowing the membrane to be selectively permeable. This is important since it allows the c...

Answered by Joy H. • Biology tutor

2983 Views

Find the integral of tan^2x dx

You can not integrate tan²x but you can integrate sec²x Since sec²x = 1 + tan²x Then tan²

Answered by Nandini P. • Maths tutor

20267 Views

Find the determinant of a 3x3 square matrix

We can expand following any row or column we want. A wise choice would be to use a row/column in which we have one or more zero entries to reduce the calculations. From this, we pick the first entry on th...

Answered by Stefano Z. • Further Mathematics tutor

2582 Views

How do I solve a problem about a mass on a slide?

It is good practice in physics to draw a diagram of the situation, so the first thing we want to do is create a picture of the problem, focussing on the object on the slide. Now we need to analyse what is...

Answered by Stefano Z. • Physics tutor

2186 Views

Explain how fair trade may benefit producers in the developing world. (4 marks)

Fair trade farmers receive a guaranteed price for their produce (e.g. cocoa, bananas) therefore they have higher and more secure income in comparison to non-fair trade. This is beneficial for producers as...

Answered by Nayha** P. • Geography tutor

4899 Views