Top answers

Biology
All levels

Describe the pathway of electrical activity in the heart during contraction.

The sino-atrial node (SAN) is located within the wall of the right atrium, and acts like a pacemaker (it instigates the rhythms of the heart). The SAN sends out regular waves of electrical activity along ...

JR
Answered by Jack R. Biology tutor
6398 Views

what is the structure of a plant cell?

cell wall- this is strong, due to the cellulose nucleus- what is the person of a nucleus- contains genetic information vacuole- sap filled membrane that gains water and loses water, giving the plant cell ...

NV
Answered by Nikita V. Biology tutor
2727 Views

what is the structure of a skeletal muscle?

Muscle cells- are multinucleated, striated, and cylindrical in shape. What is the smallest contractile unit of a skeletal muscle called? It is a sarcomere what does the sarcomere consist of? It contains t...

NV
Answered by Nikita V. Biology tutor
3687 Views

Write 0.24242424... as a fraction in its lowest terms, show all your working

Let t= 0.2424242... 100T = 24.24242424.. 99T = 24 Fraction is therefore 24/99

SH
Answered by Samuel H. Biology tutor
6077 Views

State two functions of membranes within cells

Membranes are largely used for the creation of optimum conditions. Membranes therefore keep the contents of organelles in isolation from the cytoplasm. Membranes may also be used to form transport vesicle...

SH
Answered by Samuel H. Biology tutor
23822 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:

© 2025 by IXL Learning