Internal intercostal muscles contracts and external intercostal muscles relax; The ribcage
moves downwards and inwards; diaphragm muscles relax; diaphragm assumes its dome-shaped;
volume in the thoracic cavity decreases; resulting in increase in lung volume, pressure in the lung
increases; air is then forced out of the lungs;
sharon kalunda answered the question on May 22, 2019 at 10:54
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An experiment was set up to demonstrate the necessity of carbon (IV) oxide for
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a), Why was the plant kept in darkness for 48 hours before the start of this experiment.
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b), Why was pyrogallic acid...(Solved)
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i), Man
ii), woman
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a), Name the parts labeled
K –
M –
b), State the functions of
P –
Q –
c) A...(Solved)
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a), Name the parts labeled
K –
M –
b), State the functions of
P –
Q –
c) A student was viewing a prepared slide of a plant cell under high power microscope.
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b) State the...(Solved)
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(a) Why does the activity of the enzyme become constant after a while?
(b) State how the activity...(Solved)
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(a) State the function of the organelle drawn above.
(b) Name the parts of the organelle where :
(i) Oxygen...(Solved)
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(a) State the function of the organelle drawn above.
(b) Name the parts of the organelle where :
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a)Name the class in which the plant belongs.
b)...(Solved)
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(i) B1
(ii) B2
(iii)B6(Solved)
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(i) B1
(ii) B2
(iii)B6
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Name the substance U, V and W.(Solved)
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leading to...(Solved)
In a certain experiment, the following observation was made:
When red blood cell was placed in a certain solution, the solution exerted more osmotic pressure
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(a) What type of solution was the cell placed in respect to the cell’s cytoplasm?
(b) By which physiological process did the cell lose water molecules?
Date posted: May 22, 2019. Answers (1)