Unit 4 Review

Cellular Respiration &

Human Systems

1. This is where glycolysis occurs

• A. Matrix of the mitochondria• B. Inner membrane of the mitochondria• C. Cristae of the mitochondria• D. Cytoplasm/Cytosol

2. This is what is produced during glycolysis.

• A. pyruvate and ATP• B. pyruvate ATP and NADH• C. pyruvate, acetyl CoA, NADH and ATP• D. pyruvate & NADH

3. Where do bacteria perform aerobic respiration?

• A. In their cytoplasm and mitochondria• B. In their cytoplasm only• C. In their cytoplasm and plasma membrane• D. In their plasma membrane only.

4. How many ATP molecules are made from glucose thru fermentation?

• A. 2• B. 4• C. 0• D. 32

5. What do anerobic and aerobic respiration have in common?

• A. both produce lactate and CO2 .• B. both produce pyruvate• C. both produce acetyl CoA• D. neither produce ATP

6. What is the direct energy source that drives ATP synthesis during oxidative

phosphorylation?• A. difference in H+ concentrations on opposite

sides of the membrane• B. oxidation of glucose to CO2 and H2O• C. thermodynamically favorable flow of

electrons from NADH to the mitochondrial ETC• D. final transfer of electrons to oxygen

7. What might cause your cells start producing lactate?

• A. you have a malfunctioning ETC• B. you are unable to convert glucose to

pyruvate.• C. you are unable to produce NADH• D. you have a lack of oxygen present

8. What is meant by absorption of lipids?

• A. lipids are travelling through the stomach.• B. lipids are being broken down.• C. lipids are passing through to the lacteal

vessel.• D. lipids are passing through the large

intestine.

9. Where is most of the water absorbed into our blood stream?

• A. stomach• B. small intestines• C. lungs• D. large intestines

10. Which of the following carry oxygenated blood?

• A. aorta, pulmonary artery, and arterioles• B. pulmonary artery, vena cava, and right atrium.• C. left ventricle, aorta, pulmonary vein.• D. capillaries, right ventricle, vena cava

11. What is epinephrine & what does it do to the heart?

• A. it is a nerve that decreases the heart rate• B. it is a hormone that increases the heart rate• C. it is a nerve that increases the heart rate• D. it is a hormone that decreases the heart rate

12. Which of the following is transported through our circulatory system.

• A. glucose, oxygen, and heat• B. oxygen, starch, and carbon dioxide• C. glycogen, oxygen, and urea• D. urea, heat, and starch

13. What happens in order for air to be breathed in?

• A. diaphragm relaxes and the ribs fall.• B. diaphragm contracts and the intercostal

muscles relax.• C. ribs rise and the diaphragm contracts.• D. intercostal muscles contract & ribs fall.

14. Which of the following is involved in inspiration?

• A. diaphragm relaxes• B. external intercostal muscles contract• C. abdominal muscles contract• D. internal intercostal muscles relax

15. What is the function of surfactant in alveoli?

• A. prevents alveoli from sticking together.• B. increases the pressure in the thoracic cavity• C. enables the capillaries to stick to the alveoli• D. keeps the alveoli membrane thin

16. What is the role of the epiglottis?

• A. prevents air from traveling down the esophagus.

• B. enables air to travel down the trachea• C. prevents food from traveling down the

esophagus.• D. prevents food from traveling down the

trachea

17. Which of the following is the correct enzyme in the correct location.

• A. amylase; salivary glands• B. stomach; lipase• C. pancreas; bile• D. liver; pepsin

18. The primary role of oxygen in cellular respiration is to

• A. yield energy in the form of ATP• B. act as an acceptor for electrons & hydrogen

forming water• C. combine with lactate to form pyruvate• D. combine with carbon to form CO2

19. Which of the following will occurs in the cytosol of the cell?

• A. glycolysis and fermentation• B. citric acid cycle/Krebs cycle• C. oxidative phosphorylation• D. fermentation and chemiosmosis

20. If a molecule of CO2 released into the blood in your left toe travels out your nose, it must pass

through all of the following structures except the

• A. right atrium• B. alveoli• C. vena cava• D. pulmonary vein

21. Which kind of metabolic poison would most directly interfere with glycolysis?

• A. An agent that reacts with O2 & depletes its concentration in the cell.

• B. An agent that binds to pyruvate and inactivates it.

• C. An agent that closely mimics the structure of glucose but is not metabolized.

• D. An agent that reacts with NADH & oxidizes it to NAD+