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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
6281 Views

When do you use the passé composé or the imparfait and how do you form these two tenses?

The passé composé is used to describe a completed action in the past.To form the passé composé you will need the subject, the auxiliary and the past participle of the verb:e.g. J’ai joué (I played) – Je = th...
Answered by • French tutor
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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
3265 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
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Referring to volcanoes, explain three reasons why fewer deaths are caused by this hazard than in the past. (6 marks)

Firstly, improved monitoring of volcanoes can reduce the death toll of an eruption by leading to enhanced predictions of hazard events and thus providing a longer period for the evacuation of vulnerable inha...
Answered by • Geography tutor
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