Search our library of homework questions

Top answers

All subjects

All levels

The binding of one molecule of oxygen to haemoglobin makes it easier for a second oxygen molecule to bind, explain why.

The binding of the first oxygen changes the tertiary structure of the haemoglobin. This uncovers the second binding site, allowing the second oxygen to bind.

Answered by Abbie T. • Biology tutor

11899 Views

Point K(8,-5) lies on the circle x^2 +y^2 - 12x - 6y - 23. find the equation of the tangent at K.

First, find the centre of the circle. Since we know the equation of the circle, we know that the centre (-g,-f) comes from the part of the equation -12x-6y, where -12=2g and -6=2f. Therefore, to get the c...

Answered by Catriona M. • Maths tutor

2184 Views

Differentiate y = 3x4-8x3-3

y = 3x⁴-8x³-3dy/dx = (3 x 4)x³-(8 x 3)x² dy/dx = 12x³ - 24x²

Answered by Bhavya G. • Maths tutor

3641 Views

Which verbs take the dative case?

While most verbs affect a direct object - so take the accusative - some verbs can take the dative as well as the accusative to indicate an indirect object, such as schreiben [Acc: Ich schreibe

Answered by Gabriel M. • German tutor

2592 Views

Describe the primary, secondary, tertiary and quaternary structure of proteins.

PrimaryThe amine group of one amino acid reacts with the carboxyl group of another during a condensation reaction to form a peptide bond. The products of this reaction are a dipept...

Answered by Hannah D. • Biology tutor

6582 Views