Respiration and Energy Quiz

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Questions and Answers

What is the primary reason that all living organisms respire?

  • To eliminate waste products
  • To obtain energy from food (correct)
  • To breathe in fresh air
  • To release carbon dioxide

What is the process called when food is broken down in the cells using oxygen?

  • Aerobic respiration (correct)
  • Anaerobic respiration
  • Chemical digestion
  • Cellular fermentation

What substance is produced when glucose breaks down anaerobically?

  • Oxygen and alcohol
  • Water and carbon dioxide
  • Heat and nitrogen
  • Alcohol and carbon dioxide (correct)

Why was Boojho breathing rapidly when he reached the bus-stop?

<p>He was running, which increases breathing rate (B)</p> Signup and view all the answers

What do anaerobes do in the absence of oxygen?

<p>They utilize anaerobic respiration (C)</p> Signup and view all the answers

Which component of the air do we mostly breathe in during respiration?

<p>Oxygen (B)</p> Signup and view all the answers

What is required for cellular respiration to occur?

<p>Glucose and oxygen (B)</p> Signup and view all the answers

Which of the following functions are performed by cells?

<p>Nutrition, transport, excretion, and reproduction (D)</p> Signup and view all the answers

Breathing is a part of ______.

<p>respiration</p> Signup and view all the answers

During breathing, we breathe in air which contains ______.

<p>oxygen</p> Signup and view all the answers

The breakdown of food in the cell with the release of energy is called ______.

<p>cellular respiration</p> Signup and view all the answers

When glucose breaks down with the use of oxygen, it is called ______ respiration.

<p>aerobic</p> Signup and view all the answers

Food can also be broken down without using ______.

<p>oxygen</p> Signup and view all the answers

Some organisms like yeast can get energy through ______ respiration.

<p>anaerobic</p> Signup and view all the answers

In the absence of oxygen, glucose breaks down into alcohol and ______.

<p>carbon dioxide</p> Signup and view all the answers

All living organisms respire to get ______ from food.

<p>energy</p> Signup and view all the answers

Flashcards

Respiration

The process by which living organisms break down food to release energy. It occurs in all living things at a cellular level.

Aerobic respiration

The breakdown of food, such as glucose, using oxygen to release energy. This process happens in most organisms.

Anaerobic respiration

The breakdown of food without using oxygen. This is how some organisms, such as yeast, can survive in environments lacking oxygen.

Cell

The smallest functional and structural unit of an organism. Responsible for tasks like nutrition, excretion, and reproduction.

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Cellular respiration

The breakdown of glucose into carbon dioxide and water, using oxygen, to generate energy. This is a key part of aerobic respiration.

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Food (glucose)

The food we eat, which contains stored energy that is released during respiration to power cells.

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Oxygen

A gas found in the air that is essential for aerobic respiration. It helps in the breakdown of food to release energy within cells.

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Carbon dioxide

A gas produced during respiration, both aerobic and anaerobic, often in the absence of sufficient oxygen.

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What is Respiration?

The process by which living organisms break down food to release energy. It is essential for performing life functions.

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What is a Cell?

The smallest structural and functional unit of an organism. Cells are responsible for carrying out life processes.

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What is Aerobic Respiration?

The process of breaking down food in the cell with the release of energy, using oxygen.

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What is Anaerobic Respiration?

The process of breaking down food in the cell without using oxygen. This occurs in some organisms that live in oxygen-poor environments.

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What is Food (Glucose)?

The storage unit of energy within food. This is the fuel our bodies break down.

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What is Oxygen?

A gas found in the air that is essential for aerobic respiration. It helps cells break down food to release energy.

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What is Carbon Dioxide?

A gas produced when cells break down food, both with and without oxygen.

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What are Anaerobes?

Organisms that can survive in the absence of oxygen and obtain energy through anaerobic respiration.

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Study Notes

Respiration and Energy

  • Respiration is a vital process for all living organisms, providing energy for cellular functions.
  • Organisms are composed of cells, the smallest functional units, needing energy for activities like nutrition, transport, excretion, and reproduction.
  • Food stores energy; this energy is released during respiration.
  • Breathing, or inhaling air, provides oxygen, essential for breaking down food in cells.
  • Exhaling air, or breathing out air, contains a high concentration of carbon dioxide.
  • Breathing is a part of respiration.
  • All living organisms respire to obtain energy from food.

Cellular Respiration - Aerobic and Anaerobic

  • Cellular respiration is the process of breaking down food (glucose) using oxygen within cells.
  • During aerobic respiration, glucose is broken down into carbon dioxide and water, releasing energy.
  • Anaerobic respiration occurs without oxygen.
  • Organisms like yeast can survive without oxygen, gaining energy through anaerobic respiration.
  • Anaerobic respiration produces alcohol and carbon dioxide under oxygen-less conditions.

Relation to Boojho's Question

  • Boojho's rapid breathing, caused by running, is a result of his body needing more oxygen for increased cellular respiration related to physical activity.
  • Running increases the body's need for energy, driving the need for faster breathing to supply more oxygen.

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