Science Focus 2 - Chapter Tests - Pearson Australia Media Resources

Science Focus 2 TEST
Chapter 4: Body systems
17 Describe what happens to each of the
following structures during expiration
(breathing out).
a Ribs (raised or lowered?).
b Diaphragm (flattens or is domeshaped?)
c Pressure in the chest cavity
(increases or decreases?).
d Intercostal muscles (contract or
relax?).
18 Identify five types of nutrients, and
give an example of a food rich in each
one.
19 Identify the part of food or nutrient that
a assists chemical reactions in the
body.
b repairs body tissue.
c is required in small amounts for
good health.
d provides a rich source of energy.
20 Classify the following in order from
least required each day to most required
each day for a healthy diet.
fruits, indulgence items, milk and milk
products, breads and cereals,
vegetables, meat and alternatives.
21 a Describe the process of aerobic
respiration by writing a chemical
equation.
b State whether the reaction is
exothermic or endothermic.
c Define the process of aerobic
respiration.
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