Respiration Lesson

RESPIRATION

Respiration IN Organisms

HUMAN RESPIRATION

As humans breathe in air, which contains oxygen. Oxygen is essential for us and all other animals to survive. Once we breathe in oxygen, our body uses it, along with sugar that we get through eating, to produce energy, which then allows us to be active. This process is known as respiration.

_{AEROBIC AND ANAEROBIC RESPIRATION}

Aerobic Respiration: It is the process of cellular respiration that takes place in the presence of oxygen gas to produce energy from food. ... Anaerobic Respiration: It is a process which takes place in the absence of oxygen gas. In this process, the energy is obtained by the breakdown of glucose in the absence of oxygen.

Organs of Human Respiratory system

The respiratory system consists of all the organs involved in breathing. These include the nose, pharynx, larynx, trachea, bronchi and lungs.

Mechanism Of Breathing

Breathing occurs when the contraction or relaxation of muscles around the lungs changes the total volume of air within the air passages (bronchi, bronchioles) inside the lungs. ... Inspiration occurs when the inspiratory muscles—that is, the diaphragm and the external intercostal muscles—contract.

RESPIRATION IN PLANTS

The process of respiration in plants involves using the sugars produced during photosynthesis plus oxygen to produce energy for plant growth. Respiration takes place in the mitochondria of the cell in the presence of oxygen, which is called "aerobic respiration".

QUIZ TIME

Multiple Choice

Aerobic respiration is different from anaerobic respiration in that aerobic respiration needs...

• chlorophyll
• carbon dioxide
• glucose
• oxygen

Multiple Choice

Which equation shows the reaction for anaerobic respiration

• carbon dioxide + water --> glucose and oxygen
• glucose + Oxygen --> lactic acid and energy
• glucose + oxygen --> carbon dioxide and water and energy
• glucose --> lactic acid and energy

Multiple Choice

Where in the cell does anaerobic respiration take place?

• Nucleus
• Cytoplasm
• Mitochondria
• Cell membrane

Multiple Choice

What type of respiration requires oxygen?

• Aerobic
• Anaerobic

Multiple Choice

which kind of cells would have the most mitochondria?

• brain cells
• bone cells
• plant cells
• muscle cells

Multiple Choice

The burning or breaking down of glucose is known as...

• photosynthesis
• transpiration
• respiration
• transport

Multiple Choice

State the products of respiration in the body cells?

• Oxygen, carbon dioxide and water

• glucose, oxygen and water

• carbon dioxide, water and oxygen

• carbon dioxide, water and energy

Multiple Choice

The composition of carbon dioxide in exhaled air is

• 79%

• 21%

• 4%

• 0.04%

Multiple Choice

The composition of the oxygen in inhaled air is

• 21%

• 16%

• 4%

• 0.04%

Multiple Choice

When inhalation

• Thoracic cavity become smaller

• The air pressure in the thoracic cavity increases

• The air pressure n the thoracic cavity decreases

• Air is pushed out

Multiple Choice

During exhalation, what will happen to these respiratory organs?

• Diaphragm moves downward and flatten

• Rib cage moves upwards and outwards

• intercostal muscles relax

• Intercostal muscles contract

Multiple Choice

These organs help our body to breath except

• Nasal cavity

• Lungs

• Trachea

• Mouth