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Test: Respiration and moving - Year 8 MCQ


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10 Questions MCQ Test - Test: Respiration and moving

Test: Respiration and moving for Year 8 2024 is part of Year 8 preparation. The Test: Respiration and moving questions and answers have been prepared according to the Year 8 exam syllabus.The Test: Respiration and moving MCQs are made for Year 8 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Respiration and moving below.
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Test: Respiration and moving - Question 1
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The percentage of oxygen in the air breathed out is .......

Detailed Solution for Test: Respiration and moving - Question 1
It is a common misunderstanding to think that all of the oxygen that goes into the lungs is taken into the body. If it was, mouth to mouth resuscitation would not be possible
Test: Respiration and moving - Question 2
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The percentage of carbon dioxide in inhaled air is how much?

Detailed Solution for Test: Respiration and moving - Question 2
There is only a very small percentage of carbon dioxide in the air but it is enough to create a greenhouse effect that keeps the Earth warm enough to support life. Since the middle of the twentieth century, the percentage of carbon dioxide has increased faster than ever before. This increases the greenhouse effect and causes global warming
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Test: Respiration and moving - Question 3
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The percentage of carbon dioxide in exhaled air is about how much?

Detailed Solution for Test: Respiration and moving - Question 3
That is significantly higher than the amount breathed in. It is a common misunderstanding that we breathe out only carbon dioxide
Test: Respiration and moving - Question 4
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Which is the correct order showing the route that oxygen takes to enter the blood?
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The walls of the alveoli are very thin and covered in blood capillaries. This allows the red blood cells to absorb oxygen as they pass through the lungs
Test: Respiration and moving - Question 5
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Gas exchange takes place in the alveoli. Which is not true?
Detailed Solution for Test: Respiration and moving - Question 5
They have a very large surface area which makes the absorption of oxygen and removal of carbon dioxide as efficient as possible. Smoking damages the alveoli and so getting oxygen into the blood is a lot harder
Test: Respiration and moving - Question 6
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Oxygen passes from the alveoli into the blood. How is it transported?
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Haemoglobin in red blood cells joins with oxygen
Test: Respiration and moving - Question 7
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Which of the following systems is responsible for transporting oxygen and nutrients throughout the body?
Detailed Solution for Test: Respiration and moving - Question 7

The circulatory system, comprising the heart, blood vessels, and blood, is responsible for transporting oxygen, nutrients, hormones, and other substances throughout the body.

Test: Respiration and moving - Question 8
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Which system plays a crucial role in maintaining pH balance, eliminating nitrogenous wastes, and regulating water and electrolyte levels in the body?
Detailed Solution for Test: Respiration and moving - Question 8

The excretory system, including the kidneys and urinary system, is responsible for eliminating metabolic wastes, maintaining water and electrolyte balance, and regulating pH levels in the body.

Test: Respiration and moving - Question 9
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Air can enter and leave the lungs because .......
Detailed Solution for Test: Respiration and moving - Question 9
The animal uses its chest muscles to increase the volume of its lungs. The air inside the lungs is therefore more spread out than before, so it has a lower pressure. The higher pressure of the air outside of the lungs forces air into the lungs. The opposite is true of breathing out
Test: Respiration and moving - Question 10
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Which system is responsible for protecting the body from pathogens and foreign substances?
Detailed Solution for Test: Respiration and moving - Question 10

The immune system defends the body against pathogens, viruses, bacteria, and other harmful substances through a complex network of cells, tissues, and organs.

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