Life Science Grade 11(Gaseous Exchange) Flashcards
What is the process by which oxygen is taken in and carbon dioxide is released in living organisms?
Gaseous exchange
True or False: Gaseous exchange occurs through the process of diffusion.
True
What is the main respiratory organ in humans?
Lungs
Fill in the blank: Gaseous exchange occurs in the ________.
Alveoli
What is the function of red blood cells in gaseous exchange?
Transport oxygen and carbon dioxide
Which gas is in higher concentration in the alveoli compared to the blood?
Oxygen
What is the term for the movement of gases between the alveoli and blood capillaries?
External respiration
What is the term for the movement of gases between blood capillaries and body tissues?
Internal respiration
Which gas is produced as a waste product during cellular respiration?
Carbon dioxide
What is the role of the diaphragm in breathing?
Muscle that contracts and relaxes to control inhalation and exhalation
What is the term for the total volume of air that can be inhaled and exhaled in one breath?
Vital capacity
Which respiratory disorder is characterized by inflammation and narrowing of the airways?
Asthma
What is the term for the process of forcefully expelling air from the lungs?
Exhalation
What is the term for the process of drawing air into the lungs?
Inhalation
What is the name of the pigment in red blood cells that binds to oxygen?
Hemoglobin
Which gas is transported in the blood as bicarbonate ions?
Carbon dioxide
What is the term for the exchange of gases between air and blood in the lungs?
Pulmonary respiration
What is the term for the process of exchanging gases between blood and body tissues?
Tissue respiration
Which part of the brain controls the rate and depth of breathing?
Medulla oblongata
What is the term for the process of oxygen and carbon dioxide diffusion at the cellular level?
Cellular respiration
Which gas is released as a byproduct of photosynthesis?
Oxygen
What is the term for the maximum amount of oxygen that can be utilized during intense exercise?
VO2 max
True or False: The respiratory system works independently of the circulatory system in gaseous exchange.
False
What is the term for the process of gas exchange in plants?
Transpiration
What is the difference between Cellular respiration,Breathing and gas exchange??
Cellular respiration
-Occurs in the living plant and animal cells
-It is a chemical process
-Involves inhalation and exhalation
-It is a mechanical process
-Occurs at two sites in the body,the lungs and in body tissues
-It is a physical process involving diffusion
