F4 BIO 8.3: GASEOUS EXHANGE IN HUMANS

F4 BIO 8.3: GASEOUS EXHANGE IN HUMANS

How oxygen and carbon dioxide are transported in our bodies?

Multiple Select

RECALL 1: Choose ALL the correct locations where the gaseous exchange occurs in our body.

• Lungs capillaries

• Moist skin

• Tissues capillaries

• Trachea

Multiple Select

RECALL 2: Choose ALL the correct gases involved in gaseous exchange?

• Carbon monoxide

• Carbon dioxide

• Oxygen

• Nitrogen

Multiple Choice

RECALL 3: Why our body cells really need oxygen?

• For photosyntesis

• For cellular respiration

• For transpiration

• For excretion

Multiple Choice

RECALL 4: Name the type of respiratory gases transportation across the plasma membrane of a cell?

• Active transport

• Simple diffusion

• Osmosis

• Facilitated diffusion

Multiple Choice

Gaseous exchange can occur between blood alveolus and capillaries because it only one cell thick.

• TRUE

• FALSE

Multiple Select

RECALL 6: Choose ALL the correct characteristics to allow efficient gaseous exchange in the respiratory structure of a human.

• One-cell thick

• Moist surface

• Large surface area

• Large network of blood capillary

• High hydrostatic pressure

Multiple Choice

The force on the wall of the alveolus or blood capillary is known as ..................

• atmospheric pressure

• air pressure

• partial pressure

• hydrostatic pressure

Multiple Select

Choose ALL the correct conditions for the gaseous exchange to occur?

• Higher to lower partial pressure

• Lower to higher partial pressure

• By simple diffusion

• Against the concentration gradient

Multiple Choice

Oxygen diffuses from the alveolus into the lungs capillary during inhalation.

• TRUE

• FALSE

Multiple Choice

Carbon dioxide diffuses from the lung capillaries into the alveolus because the partial pressure of CO2 is lower in the lung capillaries compared to alveolus.

• TRUE

• FALSE

Multiple Choice

What happens to the oxygen after diffuses into the red blood cell in the lungs capillary?

• Binds with haemoglobin to form oxyhaemoglobin

• Binds with CO2 to form carbaminohaemoglobin

• Dissolve in cytoplasm

Multiple Choice

What does the pulmonary vein has compared to the pulmonary artery?

• Lower concentration of oxyhaemoglobin

• Higher concentration of carbon dioxide

• Higher concentration of oxyhaemoglobin

• Lower concentration of carbonic acid

Multiple Choice

Name the organ responsible to pump blood containing respiratory gases to all parts of body tissues.

• Lungs

• Heart

• Blood vessel

• Brain

Multiple Choice

Why does body tissue need oxygen?

• To generate energy

• To synthesize enzyme

• To produce CO2

Multiple Choice

Tissue capillaries have a higher partial pressure of oxygen compared to the body tissue.

• TRUE

• FALSE

Multiple Choice

Oxygen diffuses from the body tissue into tissue capillary.

• TRUE

• FALSE

Multiple Choice

Which of the following is NOT the product of cellular respiration?

• Heat energy

• Water

• Carbon dioxide

• Oxygen

Multiple Choice

HOTS: Which of the following is NOT the reason CO2 needs to be excreted out from the body?

• Acids in nature

• Reduces oxygen in the blood

• Very low pH of blood

• Cause infection

Multiple Choice

Which of the following is NOT the method to transport carbon dioxide to the lungs through blood?

• Forms carbonic acids

• Forms carbaminohaemoglobin

• Forms bicarbonate ions

• Forms bond with platelet

Multiple Choice

Name the enzyme needed to catalysed the reaction between water and CO2 to form carbonic acids in the cytoplasm of a red blood cell.

• Lysozyme

• Protease

• Carbonic anhydrase

• Oxygenase-carboxylase

Multiple Choice

What is the % of carbonic acid that will turn into bicarbonate ions of the total CO2 in the body?

• 7

• 23

• 70

Multiple Choice

When the bicarbonate ions (70%) reach the lung capillaries, it diffuses into the red blood cell and turns into carbonic acid. Then, the carbonic acid turns into CO2 to be released out from the lungs.

• TRUE

• FALSE

Multiple Choice

Carbaminohaemoglobin will stay in the red blood cell because it only 7%.

• TRUE

• FALSE

Poll

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