Body Systems MCQ Test 1 Answers – Science Homework Answer Guides

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1 pt(s).

The diagram below shows part of the human breathing system. Where does oxygen pass into the blood?


. 1 pt(s).	The list below refers to breathing. 1…. Breathing rate increases and depth of breathing decreases. 2…. Breathing rate increases and depth of breathing increases. 3…. Rate of gas exchange increases. Which of the following correctly describes what happens during exercise?
	A.	1 only
	B.	2 only
	C.	1 and 3 only
	D.	2 and 3 only

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1 pt(s).

The diagram below shows part of the breathing system. Which structure is a bronchiole?

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1 pt(s).

The information in the table refers to some students who took part in an investigation of peak flow. Which two students should be compared to investigate the effect of age on peak flow?

Students 1 and 3

Students 2 and 3

Students 1 and 4

Students 5 and 6

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1 pt(s).

The information in the table refers to some students who took part in an investigation of peak flow. Which factor would be investigated if students 3 and 4 were compared?

Age

Fitness

Mass

Sex

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1 pt(s).

The bar graph below shows the percentage of men in different age groups who are smokers. What percentage of 25–34 year old men smoke?

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1 pt(s).

Which line in the table below shows correctly the change in concentrations of oxygen and carbon dioxide in the blood as it passes through the lungs?

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1 pt(s).

The table below shows the responses of a group of Scottish fifteen year olds when asked about their smoking habits. Which slice of the pie chart represents the percentage of fifteen year olds who are regular smokers?


. 1 pt(s).	Smoking cigarettes can increase the risk of
	A.	diabetes
	B.	anorexia
	C.	cancer
	D.	arthritis

.
1 pt(s).

Four students made two measurements of their vital capacities. The results are shown in the table below. Which student had an average vital capacity of 4100 cm3?


. 1 pt(s).	Peak flow can be used in the diagnosis and management of
	A.	asthma
	B.	diabetes
	C.	heart disease
	D.	leukaemia


. 1 pt(s).	WThe best way to measure someone’s peak flow is to
	A.	get the person to breathe out as fast as possible three times and use the highest
	B.	get the person to breathe out as fast as possible three times and use the average of the three
	C.	get the person to breathe out for as long as possible three times and use the highest
	D.	get the person to breathe out for as long as possible three times and use the average of the three values


. 1 pt(s).	A spirometer is used to measure
	A.	peak flow
	B.	vital capacity
	C.	the size of the lungs
	D.	the height of churches


. 1 pt(s).	Heart rate is measured in
	A.	ml per minute
	B.	cubic centimetres
	C.	beats per minute
	D.	beats per 20 seconds


. 1 pt(s).	The site of gas exchange in the lungs is the
	A.	trachea
	B.	bronchus
	C.	air sac
	D.	diaphragm

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