Midterm Review

What is the primary molecule produced during cellular respiration that provides energy for cellular activities?

• Glucose

• ATP

• Oxygen

• Carbon Dioxide

Which of the following is a source of energy for muscles during short, intense bursts of activity?

• Fatty acids

• Glycogen

• Proteins

• Vitamins

Describe the role of the stomach in digestion.

• It filters toxins from the blood.

• It secretes acid and enzymes to digest food.

• It absorbs water and electrolytes.

• It stores bile produced by the liver.

Which component of the circulatory system is responsible for transporting oxygenated blood from the heart to the rest of the body?

• Veins

• Arteries

• Capillaries

• Lymph nodes

Explain the primary function of the alveoli in the respiratory system.

• To filter out dust and pathogens from the air

• To exchange gases between the air and the blood

• To produce mucus to trap particles

• To warm and humidify the air

What is the main function of antibodies in the immune system?

• To produce red blood cells

• To attack and neutralize pathogens

• To transport oxygen

• To digest food particles

Which of the following is a product of photosynthesis?

• Carbon Dioxide

• Oxygen

• Nitrogen

• Water

Identify the correct sequence of levels of cellular organization from simplest to most complex.

• Organ, Tissue, Cell, Organ System

• Cell, Tissue, Organ, Organ System

• Tissue, Cell, Organ System, Organ

• Organ System, Organ, Tissue, Cell

What role does ATP play in muscle contraction?

• ATP is stored in muscles for long-term energy.

• ATP provides the energy for muscle fibers to contract and relax.

• ATP is converted into glucose for energy.

• ATP is used to transport oxygen to muscles.

What is the role of the small intestine in the digestive system?

• To break down food using acid

• To absorb nutrients into the bloodstream

• To store waste before elimination

• To produce saliva