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Explain how are the lungs adapted for fast gas exchange?

The lungs are specifically adapted for gas exchange (diffusion) - meaning the lungs allow oxygen into the blood stream and carbon dioxide out. To ensure our cells can respire properly, we want fast and ef...

Answered by Katie B. • Biology tutor

13893 Views

Point P on the curve, x = 2tan( y+ π/12), has a y-coordinate of π/4. Find an equation for the normal to the curve at P.

Step 1 - Firstly, we need to find the x-coordinate of point P. This will allow us to find the normal equation required in the question. To find the x-coordinate, we plug in the value of y given in the que...

Answered by Andrew M. • Maths tutor

9536 Views

The point (-3, -4) is the turning point of the graph of y = x^2 + ax + b, where a and b are integers. Find the values of a and b.

The function y = x² + ax + b is a quadratic polynomial and therefore has one turning point. The turning point of a quadratic graph is either the maximum or minimum point. The coefficient of x

Answered by Oliver L. • Maths tutor

14693 Views

Please could you explain the what the dative in German is?

The German dative is a grammatical case which can be applied to nouns or pronouns to indicate what we call in English an 'indirect object.' Whereas a noun in the accusative case is the direct object of a ...

Answered by Izzy H. • German tutor

1718 Views

In a medical school interview, how do I approach a question asking about my weaknesses?

With this type of question your aim should be to come across as honest and humble, whilst not delving too deep into your worst traits! It is wise to tackle this type of question with a positive and constr...

Answered by Heather E. • Medical School Preparation tutor

1561 Views