Essentials of Biology Study Set 4

The mechanism by which oxygen moves into capillaries from alveoli is

Which of the following is the correct path urine follows from internal structures to outside the body?

The functional unit of the lungs where gas exchange occurs is the

In hemodialysis, wastes normally collected by the kidney

Which of the following statements does not apply to edema?

Hair within the nose and cilia lining the respiratory tract

During urine formation, it is important for sodium and chloride ions to be reabsorbed into the bloodstream so that

In which structure does urine formation begin?

Each red blood cell contains about 250 million hemoglobin molecules and so can carry at least one billion molecules of oxygen.

Which of the following is the correct pathway of air into the lungs to the site of gas exchange?

Emphysema occurs when the walls of the alveoli are destroyed, reducing surface area for gas exchange. This condition impacts the

Which of the following is an incorrect match?

Most carbon dioxide is carried in the blood

A genetic defect causes the distal tubules of nephrons to malfunction. Which of the following may not occur during urine formation?

The tracheal system of insects

During respiration in fish, what percentage of dissolved oxygen is absorbed?

Which of the following events will cause problems with the body's ability to exchange gasses between the blood and tissue fluid?

Ammonia helps maintain the optimal pH of urine.

The nephron of mammals and Malpighian tubules of insects are both involved in water and salt balance. They are also similar in that they are both

Increasing the size of the thoracic cavity through contraction of the diaphragm and rib muscles causes