Biology Quiz: Systems and Functions

Which of the following is NOT a component of the skeletal system?

• Bones

• Cartilage

• Tendons

• Ligaments

What is the primary function of the respiratory system?

• Digestion of food

• Gas exchange (oxygen and carbon dioxide)

• Hormone production

• Waste removal

Which blood component is primarily responsible for carrying oxygen?

• White blood cells

• Platelets

• Plasma

• Red blood cells

What is the role of calcium in muscle contraction?

• To block the binding sites on actin filaments

• To bind to troponin, initiating a series of events that lead to muscle contraction

• To break down ATP

• To relax the muscle fibers

Which layer of the uterus is shed during menstruation?

• Perimetrium

• Myometrium

• Endometrium

• Ectometrium

Identify the function of ligaments in the skeletal system.

• Connect muscles to bones

• Connect bones to bones

• Produce red blood cells

• Store minerals

Explain why red blood cells are suited for oxygen transport.

• They have a nucleus for storing oxygen

• They contain hemoglobin, which binds oxygen

• They are the largest blood cells

• They produce antibodies

Describe the process that occurs when calcium binds to troponin during muscle contraction.

• The muscle relaxes

• The actin binding sites are exposed, allowing myosin to attach

• ATP is produced

• The muscle shortens without any interaction

Which structure in the respiratory system is directly responsible for gas exchange?

• Trachea

• Bronchi

• Alveoli

• Diaphragm

During menstruation, what happens to the endometrium?

• It thickens

• It is shed and exits the body

• It becomes more vascularized

• It forms the placenta