Top answers

All subjects
All levels

What is an acid-base pair?

Two species that transform into each other by loss or gain of a proton. 

LH
Answered by Laura H. Chemistry tutor
2250 Views

What is the role of Tropomyosin in myofibril contraction?

Tropomyosin helps to regulate myofibril contraction. Before contraction, tropomyosin covers the myosin binding sites on the actin molecule, preventing the myosin heads from binding. During contraction, ca...

LH
Answered by Laura H. Biology tutor
10435 Views

Why is sickle cell disease most common among people living in tropical regions, and their descendants?

Sickle cell disease is caused by a recessive allele of the haemoglobin gene. When two copies are present (i.e. it is homozygous), many red blood cells become sickle-shaped, leading to disease.

...
SG
Answered by Sean G. Biology tutor
17939 Views

Differentiate x^5 + 3x^2 - 17 with respect to x

When you are differentiating, use the formula:

The differential of ax^n is (n*a) x^(n-1). Or in words: 'multiply by the power, then reduce the power by 1.'

Hence for our que...

DL
Answered by David L. Maths tutor
4264 Views

What Is straight line depreciation?

In financial accounting we have different types of depreciation, based on the company's accounting policy. One of the methods is straight line depreciation. 

Assets can be depreciated, so...

IS
Answered by Ignac S. Accounting tutor
2163 Views

We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning