Cellular Respiration Quiz

The main products of yeast fermentation are (Check all that apply) -Alcohol -FADH -CO -CO2 -Lactic acid -NAD+ -NADH -Pyruvate

-Alcohol -CO2 -NAD+

In the absence of oxygen, what anaerobic pathways can occur after glycolysis? (Check all that apply.) -Alcohol Fermentation -CAM Cycle -Krebs Cycle -Lactate Fermentation -Oxidative phosphorylation -Rubisco Fermentation

-Alcohol Fermentation -Lactate Fermentation

The main products of lactate fermentation are (Check all that apply) -Alcohol -FADH -CO -CO2 -Lactic acid -NAD+ -NADH -Pyruvate

-Lactic acid -NAD+

A cotton ball with 15% potassium hydroxide, which absorbs excess carbon dioxide, was added to three different test tubes. On top of the cotton ball, an equal weight of either glass beads, germinating seeds, or non-germinating seeds was placed. A respirometer was attached to the top of each test tube and the volume was measured every 5 minutes for 30 minutes. The change in volume for each of the three tubes can be seen in the graph below. 1. Which of the tubes is most likely to have contained the germinating seeds? -Tube A -Tube B -Tube C

1. Tube B

Yeast are able to ferment a variety of sugars in anaerobic conditions. Carbon dioxide is produced as a byproduct. A respirometer can be used to determine how much carbon dioxide is produced and thus measure rates of fermentation. Respirometers were set up that contained yeast and either a solution containing a carbohydrate or distilled water. The height of the bubble contained in the respirometer was measured every 5 minutes for 20 minutes. The results can be seen in the graph below. 1. Which of the respirometers is the most likely to contain distilled water + yeast? 2. Which of the respirometers contains the carbohydrate that is fermented most efficiently by the yeast? -Tube A -Tube B -Tube C -Tube D -Tube E

1. Tube E 2. Tube A

Respirometers containing yeast and either a carbohydrate solution or distilled water were set up to monitor fermentation. Fermentation rate can be calculated by the change in respirometer bubble height over time. What is the rate of fermentation in Tube C between 10 and 15 minutes? A. 2 mm/min B. 2 min/mm C. 10 min/mm D. 1 min/mm E. 1 mm/min F. 10 mm/min

A. 2 mm/min

A process common to all living organisms, whether aerobic or anaerobic, is A. Glycolysis. B. Electron transport chain reactions. C. The Krebs cycle. D. Pyruvate oxidation. E. Fermentation.

A. Glycolysis.

Why is cellular respiration important? A. It generates ATP, which cells can use to do work. B. It produces oxygen gas, which is essential to cell functions. C. It breaks down carbon dioxide, which is toxic to cells. D. It reduces glucose. E. It generates chemical gradients, which have potential energy.

A. It generates ATP, which cells can use to do work.

Which of these is not a step in aerobic respiration? A. Lactic acid fermentation B. Oxidative phosphorylation C. The electron transport chain D. The Krebs cycle E. Glycolysis

A. Lactic acid fermentation

Germinating soybeans will have a higher cellular respiration rate than non-germinating soybeans? A. True B. False

A. True

Tube C contained non-germinating seeds. If the initial measurement for this tube was 82mm, what was the final measurement? A. 92mL B. 76mL C. 98mL D. 45mL

B. 76mL

A student set up respirometers to measure fermentation of two different carbohydrates by yeast. He measured the height of the bubble (in mm) in each respirometer every 5 minutes for 20 minutes. His data can be seen in the table below. Which of the errors listed below could have caused him to get this result? A. He added glucose to both tubes. B. He forgot to add the yeast. C. He did not expose the tubes to light. D. He was not accurate when he used the ruler to take his measurements.

B. He forgot to add the yeast.

All of the following are the end products of glycolysis except A. NADH. B. NAD+. C. ATP. D. Energy. E. Pyruvate.

B. NAD+.

A device that can be used to measure the rate of exchange of oxygen and carbon dioxide during energy-acquiring pathways is called a A. Fermentation tube. B. Respirometer. C. Barometer. D. Spectrophotometer. E. Graduated cylinder.

B. Respirometer.

In cellular respiration, carbon dioxide is formed from the oxidation of which of the following? A. Water B. Oxygen C. Glucose D. Cytochrome oxidase E. NADH

C. Glucose

Which is incorrect about fermentation? A. In yeast, ethanol is produced. B. It is anaerobic. C. It generates oxygen. D. It recycles NADH back to NAD+. E. When human muscles are lacking oxygen, lactate is produced.

C. It generates oxygen.

Sports physiologists at an Olympic training center wanted to monitor athletes to determine at what point their muscles were functioning anaerobically. They could do this by checking for the buildup of which molecule? A. ATP B. ADP C. Lactate D. Carbon dioxide E. Oxygen

C. Lactate

In muscle cells, fermentation produces not alcohol but A. ATP. B. NADH. C. Lactic acid. D. Pyruvate. E. Kinetic energy.

C. Lactic acid.

During the experiment measuring energy production in plants, the highest rate of cellular respiration occurred in A. The tube containing glass beads. B. All three tubes at an equal rate. C. The tube containing germinating seeds. D. None of the tubes. E. The tube containing non-germinating seeds.

C. The tube containing germinating seeds.

Under what environmental conditions do yeast carry out fermentation? A. Low pH B. High temperature C. All of the choices are correct. D. Absence of oxygen E. High osmotic pressure

D. Absence of oxygen

What is produced when beer is made? A. Ethyl alcohol and water B. Water, hydrogen gas, and ethanol C. Lactate and ethanol D. CO2 and ethanol E. Oxygen and ethanol

D. CO2 and ethanol

When trying to determine the rate of cellular respiration (an aerobic process), why is oxygen measured and not carbon dioxide? A. The CO2 produced during the Krebs cycle is needed during glycolysis thus there wouldn't be anything to measure. B. CO2 could be measured, but this lab chose to measure oxygen instead. C. CO2 isn't produced during cellular respiration. D. CO2 is produced during both aerobic and anaerobic processes; we couldn't be sure cellular respiration was taking place.

D. CO2 is produced during both aerobic and anaerobic processes; we couldn't be sure cellular respiration was taking place.

In the soybean experiment, the ____ used more oxygen and the ____ used more ATP. A. Non-germinating seeds; germinating seeds B. Non-germinating seeds; non-germinating seeds C. Non-germinating seeds; glass beads D. Germinating seeds; germinating seeds E. Germinating seeds; non-germinating seeds

D. Germinating seeds; germinating seeds

Which of the following does NOT occur during yeast fermentation? A. Glucose is oxidized to make Pyruvate. B. Pyruvate is oxidized forming CO2 and ethanol. C. NADH is oxidized to NAD+ D. Lactate is produced. E. NAD+ is reduced to NADH.

D. Lactate is produced.

Cellular respiration A. Releases energy and oxygen. B. Oxidizes oxygen and reduces glucose. C. Releases energy and reduces water. D. Oxidizes glucose and reduces oxygen. E. Requires energy and releases NADH.

D. Oxidizes glucose and reduces oxygen.

In the yeast fermentation experiment, what is being produced to cause the air bubble at the top of the tube to increase over time? A. H2 B. O2 C. KOH D. N2 E. CO2

E. CO2

The first stage of cellular respiration, called ___________, takes place in the cytoplasm of the cell and needs no oxygen. A. Krebs cycle B. Oxidation C. Photorespiration D. Reduction E. Glycolysis

E. Glycolysis

The oxygen utilized in cellular respiration finally shows up as A. CO2. B. Part of a sugar. C. New O2. D. ATP. E. H2O.

E. H2O.