Top answers

Describe the flow of blood through the heart

First of all be aware of the compartments the blood will flow through such as the left and right atria and ventricles. Note the bicuspid, tricuspid and semi lunar valve positions.Blood entering the right atr...
SK
Answered by Sarah K. • Biology tutor
3429 Views

Explain two differences between procedural memory and episodic memory (4)

Due to this only being a 4 mark question, there is no need to include a lot of waffle. There are two marks for each explanation. Procedural memory is part of the long-term memory, this is responsible for ess...
BT
Answered by Ben T. • Psychology tutor
5276 Views

How would you expect the H-NMR spectrum of ethanol to differ from the H-NMR spectrum of ethane?

First, draw out both molecules as this will make the comparison much easier. Count the number of different hydrogen environments in each molecule to determine the number of H-NMR peaks. Count the number of h...
EF
Answered by Edward F. • Chemistry tutor
6827 Views

When an antigen binds to a receptor on a T cell, the T cell becomes activated and differentiates into different types of T cells. What are these T cells and what are their functions? (6 marks)

There are three main types of T cell. T helper (CD4+), T killer (CD8+) and T memory. The CD4+/8+ are complex proteins on the surface of each respective T cell that they use in their function. T helper cells ...
ZM
Answered by Zachary M. • Biology tutor
4347 Views

From the definition of the decay constant for nuclear decay, derive the exponential decay equation.

By definition, dn/dt = - λ N , If you separate the variables which contain N and t, and then integrate w.r.t N and w.r.t t you get, lnN = -λt + C (1), To find the constant of integration, solve (1) by settin...
JP
Answered by Jake P. • Physics tutor
3139 Views