Biology SS2

Which component of blood is primarily responsible for transporting oxygen?

• Plasma

• White blood cells

• Platelets

• Red blood cells

Which blood vessel carries blood away from the heart to the rest of the body?

• Vein

• Aorta

• Capillary

• Pulmonary vein

The liquid part of blood is known as:

• Platelets

• Plasma

• Hemoglobin

• Serum

Which type of blood cell is involved in fighting infections?

• Red blood cells

• White blood cells

• Platelets

• Plasma

The primary function of platelets is to:

• Carry oxygen

• Fight infections

• Clot blood

• Transport nutrients

The main site of nutrient absorption in the digestive system is the:

• Mouth

• Stomach

• Small intestine

• Large intestine

Which enzyme in the saliva starts the digestion of carbohydrates?

• Pepsin

• Amylase

• Lipase

• Trypsin

The process of breaking down food into smaller molecules is called:

• Absorption

• Assimilation

• Digestion

• Excretion

The smallest functional unit of the lungs is called:

• Bronchi

• Bronchioles

• Alveolus

• Pleura

The smallest blood vessels where exchange of gases and nutrients occurs are:

• Arteries

• Veins

• Capillaries

• Venules