Ch 7 Practice Quiz

Plants carry out cellular respiration? True

Glycolysis is an efficient pathway for extracting energy from glucose? False

All of the following statements concerning cellular respiration are true EXCEPT? The metabolic breakdown of glucose yields more energy during fermentation than during aerobic respiration.

During respiration most ATP is formed as a direct result of the net movement of? protons (H+ ions) down a concentration gradient.

Which of the following cellular processes is coupled with the hydrolysis of ATP? Active Transport

Process in which CO2 is released as a by-product of oxidation-reduction reactions? Krebs cycle (citric acid cycle)

process found in both photosynthesis and cellular respiration? chemiosmosis

Process in which sugar is oxidized to pyruvic acid? Glycolysis

Oxygen consumption can be used as a measure of metabolic rate because oxygen is? necessary for ATP synthesis by oxidative phosphorylation.

Which of the following pathways for the transport of cellular energy most likely evolved first? Glycolysis

The oxygen consumed during cellular respiration is involved directly in which process or event? Accepting electrons at the end of the electron transport chain.

During glycolysis, when glucose is catabolized is pyruvate, most of the energy of glucose is? Retained in the pyruvate.

During cellular respiration, acetyl CoA accumulates in which location? Mitochondrial matrix.

Starting with Citrate, which of the following combinations of products would result from three turns of the citric acid cycle? 3 ATP, 6 CO2, 9 NADH, and 3 FADH2

During oxidative phosphorylation, H2O is formed. Where does the oxygen for the synthesis of the water come from? Molecular Oxygen (O2)

Which of the following produces the most ATP when glucose is completely oxidized to carbon dioxide and water? Oxidative phosphorylation (chemiosmosis)

When NADH donates two electrons to ubiquinone during respiration, ubiquinone is? Reduced

The role of Oxygen gas in our cells is to? Accept electrons from the respiratory (electron transport) chain.

In all cells, glucose metabolism begins with? Glycolysis

Animals inhale air containing oxygen and exhale air with less oxygen and more carbon dioxide. Most of the carbon dioxide comes from? The citric acid cycle.

In the cell, the site of oxygen utilization is the? Mitochondrion

The water that is a by-product of cellular respiration is produced as a result of the? Reducing of oxygen at the end of the electron transport chain.

Most ATP produced in our bodies is made? Using ATP synthase

Fermentation? Does not require O2.

Compared with fermentation, the aerobic pathways of glucose metabolism produce? more ATP

Cellular respiration used oxygen to convert the chemical energy stores in organic molecules into? ATP

What is the correct equation for cellular respiration? 6O2 + C6H12O6 ® 6CO2 + 6H2O + Energy

Which of the following is the correct sequence of events in cellular respiration? glycolysis ® Krebs cycle (citric acid) ® electron transport

The Krebs (citric acid) cycle starts with? acetyl coA and yields carbon dioxide.

Cellular respiration is called an aerobic process because it requires? Oxygen

Milk is converted to yogurt under certain conditions when the microorganisms in the milk produce acid. Which of these processes would you expect to be in the key production of yogurt? Lactic Acid Fermentation

What molecules belong in box E and F? CO2 and Oxygen

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