Top answers

In terms of pressure and volume, explain the changes that take place in the chest to allow ventilation to occur.

Think through inhalation and exhalation separately and the events step-wise. Be aware of the movements of your own chest when breathing in and out. Inhalation (breathing in):The external intercostal muscles ...
AH
Answered by Alice H. • Biology tutor
3255 Views

Describe the role of different structures (shown in the figure below) involved in the coordination of a reflex action and the sequence of events that occur(6 marks).

A receptor detects a stimulus and generates electrical impulses in response. Electrical signals are then conducted by a sensory neuron to the spinal cord. Neurotransmitter molecules then cross the synapse be...
LS
Answered by Laura S. • Biology tutor
3100 Views

What's the difference between 'Ser' and 'Estar'?

This is common confusion for many Spanish students. Both verbs mean 'to be' in English, but have different uses in Spanish! Here's a very general go-to rule to help you remember which verb to use when: 'Ser'...
SP
Answered by Shreya P. • Spanish tutor
2530 Views

What is the difference between mitosis and meiosis?

The main difference between the two types of cell divisions is that the purpose of mitosis is for cell growth and the purpose for meiosis is for sexual differentiation/reproduction. Mitosis occurs in somatic...
CS
Answered by Charlotte S. • Biology tutor
13973 Views

Explain two consequences of the Berlin Blockade

The Berlin Blockade, erected in 1948 as a response to the forming of Bizonia, was Stalin's attempt to keep Germany as a 'Buffer Zone' between Soviet Europe and the Capitalist territories. West Berlin, that i...
MB
Answered by Markus B. • History tutor
22509 Views