Respiration and Gas Exchange Concepts

The video explains the process of respiration, differentiating it from breathing. It covers how energy is stored in cells as ATP, and the differences between aerobic and anaerobic respiration. The video also describes how plants and animals perform respiration, highlighting various modes such as cutaneous and pulmonary respiration. Finally, it details the human respiratory system, including the role of the diaphragm and alveoli.

What is the primary difference between breathing and respiration?

• Breathing is the intake and release of gases, while respiration includes energy production.

• Breathing and respiration are the same processes.

• Breathing involves chemical reactions, while respiration is purely physical.

• Respiration occurs only in plants, while breathing occurs in animals.

How is energy stored in cells after respiration?

• As glucose

• As ADP

• As carbon dioxide

• As ATP

What is the main characteristic of aerobic respiration?

• It results in the complete breakdown of glucose.

• It only occurs in plants.

• It produces lactic acid.

• It occurs without oxygen.

Which of the following is a product of anaerobic respiration in yeast?

• Lactic acid

• Oxygen

• Ethanol

• Water

In plants, which structure is primarily responsible for gas exchange?

• Chloroplasts

• Lenticels

• Root hairs

• Stomata

How do lenticels function in plant respiration?

• They store nutrients for the plant.

• They transport water from roots to leaves.

• They facilitate gas exchange in woody stems.

• They absorb sunlight for photosynthesis.

Which mode of respiration is used by aquatic animals?

• Tracheal respiration

• Bronchial respiration

• Cutaneous respiration

• Pulmonary respiration

What is the primary respiratory organ in humans?

• Trachea

• Lungs

• Gills

• Skin

What role does the diaphragm play in breathing?

• It filters air entering the lungs.

• It contracts to increase lung volume during inhalation.

• It produces ATP for energy.

• It stores oxygen for later use.

What is the average breathing rate for a human adult?

• 5-10 times per minute

• 12-16 times per minute

• 20-25 times per minute

• 30-35 times per minute