Which of the following most accurately describes the process of Respiration?

• Respiration is the process of breaking down sugar in digested food in the presence of oxygen to release energy.

• Respiration is the process of breathing out.

• Respiration is the process of breaking down sugar to release energy.

• Respiration is the process of converting oxygen to carbon dioxide.

Tags

NGSS.MS-LS1-7

Which of the following sets of statements is correct?

• Blood entering lungs is oxygen-poor;

  Blood leaving lungs is oxygen-rich.

• Blood entering lungs is oxygen-rich;

  Blood leaving lungs is oxygen-poor.

• Blood entering lungs is oxygen-rich;

  Blood leaving lungs is oxygen-rich.

• Blood entering lungs is oxygen-poor;

  Blood leaving lungs is oxygen-poor.

What is a similarity in the structures of gills and the lungs? How do they allow these structures to function efficiently?

Choose the option(s) that accurately answers this question.

• Gills contain gill filaments; lungs contain air sacs. These structures increase surface area for more efficient gaseous exchange.

• Gills contain gill filaments; lungs contain air sacs. These structures are surrounded by many blood vessels for more efficient gaseous exchange.

• Both gills and lungs contain air sacs which increase surface area for more efficient gaseous exchange.

• Gills contain gill filaments; lungs contain air sacs. These structures allow for more efficient gaseous exchange since they are small.

Trivia!

What chemical processes involves oxygen?

• Respiration.

• Combustion (burning).

• Forming rust.

• Photosynthesis.

Tags

NGSS.MS-LS1-6

Which of the following statements is true?

• Exhaled air contains less oxygen, more carbon dioxide and more water vapour, and is warmer than inhaled air.

• Exhaled air contains more oxygen, less carbon dioxide and less water vapour, and is warmer than inhaled air.

• Exhaled air contains more oxygen, less carbon dioxide and more water vapour, and is warmer than inhaled air.

• Exhaled air contains less oxygen, more carbon dioxide and more water vapour, and is cooler than inhaled air.

"There is more carbon dioxide than oxygen in exhaled air." Is this statement true or false?

• True!!!

• False.

Which of the following statements is/are true?

• Breathing involves important parts which are not part of the respiratory system.

• Inhalation involves the ribcage moving upwards and inwards.

• Exhalation involves the diaphragm relaxing and moving up.

• The breathing rate is the number of breaths taken in one minute.

Which of the following factors results in an increase in breathing rate?

• altitude (when amount of oxygen in the air decreases).

• sleeping.

• during a vigorous exercise.

• during an asthma attack.

Which of the following statements is/are true?

• Respiration, breathing and gaseous exchange mean the same thing.

• Respiration occurs in all living cells while breathing occurs when the ribcage and diaphragm work together for air to enter and exit the lungs. Gaseous exchange occurs in the air sacs of lungs.

• Respiration uses O2 in the blood and releases CO2 into the blood. Breathing takes in air into the lungs and removes air from the lungs. Gaseous exchange takes in O2 in the air into the bloodstream and removes CO2 from the bloodstream into the air.

• Respiration involves a release of energy. Breathing involves inhalation and exhalation. Gaseous exchange involves exchanging O2 and CO2 between air in the lungs and bloodstream.

Which of the following correctly describes the functions of the circulatory system?

• Transports O2 from the lungs to the body cells and transports CO2 from the body cells back to the lungs to be removed.

• Transports water and digested food from the digestive system to the body cells.

• Transports waste products to organs of excretion to be removed.

• Protects the body from infection (white blood cells).