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Unit 0 Revision

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Year 11, AY2020

Name: ………………………………………………………

Gaseous Exchange & Respiration (Revision)

Date: …………………

(A) Breathing a.k.a. ventilation

1.

Breathing involves: ____________________________________________________

2.

Based on the diagram below, state the sequence of: a) Air inhalation: b) Air exhalation:

When you inspire the air…… 😉 When air is expired…… ☹

3.

Ventilation allows the air to enter the alveoli. There, at the _____________ of each alveolus and the capillaries surrounding the alveoli, gaseous exchange occurs.

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(B) Gaseous Exchange

1.

In each alveolus, gaseous exchange occurs as _______________ diffuse across the moist wall of alveolus from ___________________________ into the blood capillaries, at the same time

_________________________ diffuse from the capillaries into the ___________________________

2.

This process allows for _________________________ blood from the heart to be rid of

_____________________________ and added with _______________.

3.

Then the ___________________ blood will leave the lungs to return to ________________________ of the heart, and then be transported to the whole body via ______________.

4.

Cells take up oxygen from blood by ______________. Then, _________________________________ occurs at ________________.

(C) Cellular Respiration

1.

In each cell, glucose is oxidised to produce _________________________, _________ and _________

Equation of __________________ respiration:

2.

In the condition where oxygen is not ______________________ or ________________, another type of respiration occurs:

, a.k.a. fermentation

3.

In yeast, ______________________ fermentation produces:

4.

In human being, ______________________ fermentation produces:

Self-Summary

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