Respiration and Blood Composition

What is the process by which cells break down glucose to release energy?

• Cellular respiration

• Protein synthesis

• Photosynthesis

• Cell division

Which organ in the respiratory system is responsible for the exchange of oxygen and carbon dioxide in the blood?

• stomach

• lungs

• heart

• liver

Name the components of blood that are responsible for transporting oxygen and carbon dioxide.

• Red blood cells and plasma

• White blood cells and platelets

• Plasma and platelets

• Hemoglobin and leukocytes

What is the role of white blood cells in the immune system?

• White blood cells aid in digestion.

• White blood cells help the body fight infections and diseases.

• White blood cells are responsible for producing insulin.

• White blood cells help regulate body temperature.

Which blood component is responsible for carrying oxygen to the body tissues?

• White blood cells

• Platelets

• Plasma

• Red blood cells

Explain the process of diffusion of oxygen and carbon dioxide in the blood.

• Oxygen diffuses from blood into alveoli, binds to carbon dioxide. Carbon dioxide diffuses from alveoli into blood capillaries to be exhaled.

• Oxygen diffuses from alveoli into surrounding tissues, binds to hemoglobin. Carbon dioxide diffuses from blood into alveoli to be inhaled.

• Oxygen diffuses from blood into alveoli, binds to hemoglobin. Carbon dioxide diffuses from alveoli into blood capillaries.

• Oxygen diffuses from alveoli into blood capillaries, binds to hemoglobin. Carbon dioxide diffuses from blood into alveoli to be exhaled.

What are pathogens and how do antibodies help in fighting them?

• Pathogens are harmful microorganisms that can cause diseases. Antibodies are proteins produced by the immune system to help identify and neutralize pathogens by binding to specific antigens on their surface.

• Pathogens are beneficial microorganisms that help in digestion. Antibodies are proteins that inhibit the immune system from fighting pathogens.

• Pathogens are only found in plants and not in animals. Antibodies are proteins that help pathogens multiply.

• Pathogens are non-living substances that have no effect on the body. Antibodies are chemicals that promote pathogen growth.

How does carbon dioxide get transported in the blood?

• Through dissolved in plasma, chemically bound to hemoglobin, and as bicarbonate ions

• As free-floating gas bubbles

• By binding to red blood cells

• Through diffusion across the skin

Describe the function of red blood cells in the body.

• Red blood cells produce insulin in the body.

• Red blood cells are responsible for muscle contraction.

• Red blood cells store excess water in the body.

• The function of red blood cells is to transport oxygen and carbon dioxide in the body.

What is the main component of blood plasma and its role in the body?

• Water

• Calcium

• Iron

• Proteins