Top answers

Describe how the structures involved in a reflex action help co-ordinate a reflex: (image with receptor, effector, spinal cord, synapse and neurones)

A receptor detects a stimulus e.g. pressure. The receptor generates electrical signals. Neurones conduct impulses, a sensory neurone conducts to the spinal cord. There is a synapse between the neurones and t...
PA
Answered by Pareya A. • Biology tutor
4585 Views

What is the process of gas exchange in the alveoli?

So as we know, the job of the lungs is to transfer oxygen from the outside atmosphere into the body while also removing waste products that the body has produced and needs to get rid of- carbon dioxide. The ...
MA
Answered by Mohammad A. • Biology tutor
6263 Views

Find the co-ordinates of the turning point of the line with equation y = x^2 + ax + b that passes through (1, 47) and (2, 60)

y = x 2 + ax + bWhen x=1:47 = (1) 2 + a(1) + b47 = 1 + a + b46 = a + bWhen x = 260 = (2) 2 + a(2) + b60 = 4 + 2a + b56 = 2a + b Let this be equation 1Let 46 = a + b be equation 2Subtract equation 2 from equa...
HM
Answered by Henry M. • Maths tutor
3250 Views

Below is a diagram of a sperm cell. Describe how the long tail and mitochondria aid in the sperms function (2 marks)

1- The long tail helps the sperm to swim towards the egg. Also makes the sperm more streamlined to get to the egg quicker. 2- The mitochondria release energy which enable the sperm to swim towards the egg.
YB
Answered by Yazmin B. • Biology tutor
14157 Views

Starting with this conversation, explore how Shakespeare presents the romantic relationship between Miranda and Ferdinand.

Miranda opens the passage with a speech that confesses her ignorance of the world beyond her isle, "How features are abroad I am skilless of". In response, Ferdinand is thereby quick to proclaim hi...
EL
10477 Views