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Using Fick's Law, explain how rapid gaseous exchange takes place in a mammal

Gaseous exchange of oxygen and carbon dioxide (diffusion) occurs between the alveoli (tiny air sacs) and capillaries (microscopic blood vessels) inside the lung. Diffusion refers to the passive net movement ...
TC
Answered by Timothy C. • Biology tutor
15378 Views

What is the difference between the passé composé and the imperfect tense? How do I know which to use?

This is a common question for the native English speaker learning French as it is a concept that isn't so widely used in the English language. The passé composé (perfect) and the imperfect both have specific...
LJ
Answered by Laura J. • French tutor
3215 Views

How do you multiply matrices together?

Not all matrices can be multiplied together, so the first thing to do is check it's even possible! To do this write the matrices next to each other (we'll call the first one A and the second B). If the numbe...
RG
Answered by Rachael G. • Maths tutor
5481 Views

In Mary Shelley's 'Frankenstein', is the creature truly a monster?

While in Victor's eyes the creature is most certainly a monster, describing him frequently as 'fiend' and immediately fleeing the scene once the creature is brought to life in disgust: 'how can I describe my...
MS
20137 Views

How does an electrical impulse travel the gap between two nerves?

The electrical impulse that travels along a nerve, known in biology as an action potential, gets passed along to an adjacent nerve as a chemical signal. When an action potential reaches the end of a nerve, i...
LM
Answered by Lucy M. • Biology tutor
5398 Views