Understanding Oxygen and Its Effects

Understanding Oxygen and Its Effects

Assessment

Interactive Video

Biology, Science, Chemistry

7th - 12th Grade

Hard

Created by

Mia Campbell

FREE Resource

The video explores the dual nature of oxygen, essential for life yet potentially harmful due to its role in oxidation. It traces the history of oxygen in Earth's atmosphere, explaining how it became crucial for animal life. The video delves into the concept of free radicals, unstable oxygen molecules that can damage cells, leading to oxidative stress and aging. It highlights the body's use of antioxidants to neutralize free radicals and maintain cellular health. The video concludes with a call to engage with SciShow for more educational content.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What percentage of Earth's atmosphere is composed of oxygen?

20%

10%

30%

40%

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which gas makes up the majority of Earth's atmosphere?

Carbon Dioxide

Nitrogen

Oxygen

Hydrogen

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How long has oxygen been present in Earth's atmosphere?

600 million years

2.2 billion years

4.5 billion years

1 billion years

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What process involves oxygen reacting with other substances, like metal or apple flesh?

Photosynthesis

Oxidation

Reduction

Fermentation

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a free radical?

A form of nitrogen

A type of antioxidant

A rogue oxygen atom

A stable oxygen molecule

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What can free radicals potentially damage in the body?

All of the above

Proteins

Cell membranes

DNA

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is oxidative stress?

A method of breathing

A form of cellular damage

A type of exercise

A type of diet

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