Ch 10 Respiration

Fill in the Blank

Where does respiration mainly take place?

Fill in the Blank

The mitochondria is the site of aerobic respiration where glucose is __________ to release energy.

Multiple Choice

Respiration and breathing are the same thing.

• yes

• no

Multiple Choice

Which statement is true?

• aerobic respiration does not require oxygen

• aerobic respiration takes place in the cytoplasm

• anaerobic respiration takes place in the cytoplasm

• anaerobic respiration requires oxygen

Multiple Choice

Which statement is true?

• the by-products of anaerobic respiration is carbon dioxide and water

• the by-products of anaerobic respiration is lactic acid

• anaerobic respiration releases large amount of energy

• aerobic respiration releases small amount of energy

Multiple Choice

Why must breathing rate increase during exercise?

• to take in more oxygen

• to take in oxygen at a faster rate

• to transport more oxygen and glucose to the muscles

• to transport oxygen and glucose to the muscles at a faster rate

Multiple Choice

Why must heartrate increase during exercise?

• to take in more oxygen

• to take in oxygen at a faster rate

• to transport more oxygen and glucose to the muscles

• to transport oxygen and glucose to the muscles at a faster rate

Multiple Choice

The amount of lactic acid in muscles increases when they are lacking

• carbon dioxide

• glucose

• hydrogencarbonate ions

• oxygen

Multiple Choice

What is caused by the presence of high concentration of lactic acid in leg muscles?

• a decrease in the oxygen concentration in the muscle

• an increase in the glucose concentration in the muscle

• an involuntary contraction of the muscle

• a voluntary relaxation of the muscle

Multiple Choice

When is the oxygen debt considered to be repaid?

• When all the lactic acid has been transported to the liver

• When all the lactic acid has been removed from the muscles

• When all the lactic acid has been oxidised or converted to glucose

• When breathing rate returns to resting rate

Multiple Choice

Respiration and breathing are the same thing.

• yes

• no

Multiple Choice

What is the order of structures, according to size, with the largest diameter air passage first?

• bronchus > bronchiole > trachea

• bronchus > trachea > bronchiole

• trachea > bronchiole > bronchus

• trachea > bronchus > bronchiole

Fill in the Blank

Name structure X

Multiple Choice

Which pathway shows the movement of oxygen from the air into the blood?

• air>alveoli>trachea>bronchi>bronchioles>blood

• air>bronchioles>bronchi>alveoli>trachea>blood

• air>trachea>bronchi>bronchioles>alveoli>blood

• air>trachea>bronchioles>bronchi>alveoli>blood

Multiple Choice

Which correctly explains the structural adaptation of the alveoli?

• numerous alveoli to allow oxygen to dissolve

• alveoli are well supplied with blood capillaries to increase surface area for faster diffusion of gases

• wall of alveolus is one cell thick to increase surface area for faster diffusion of gases

• alveoli are well supplied with blood capillaries to maintain concentration of gases as there is continuous flow of blood

Open Ended

State and explain one adaptation of the alveoli for gas exchange.