Final Exam Practice Part 2

During a long period without food, the body relies heavily on its major lipid reserve to supply energy. These common body lipids are

• triglycerides, and they are stored in adipose (fat) tissues.

• glycoproteins, and they are stored in the muscles.

• eicosanoids, and they are stored in our blood.

• glucoses, and they are stored in the liver.

A runner “carb loads” the night before a marathon to maximize the storage form of energy in muscle and liver. This storage molecule is a polymer of ______ molecules.

• glucose

• starch

• fructose

• amino acid

One turn of the citric acid cycle results in the formation of

• 1 ATP

• 2 ATP

• 32–34 ATP

• 38 ATP

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Proteins are

• polymers made up of amino acid monomers.

• monomers.

• monomers made of repeating subunits of polymers.

• neither monomers nor polymers.

Compared to a solution with a pH of 7, a solution with a pH of 4 is more —

Two atoms that differ only in the number of neutrons they contain are known as

• anions.

• isomers.

• isotopes.

• ions.

Which of the following structures function holds organelles in place, maintaining cell shape and rigidity?

• Centrioles

• Flagella

• Golgi apparatus

• Microtubules

During exercise, your cells harvest energy from glucose in a stepwise fashion. Which of the following choices lists the order of stages of cellular respiration in proper order?

• Glycolysis, citric acid cycle, and the electron transport chain

• Citric acid cycle, glycolysis, and the electron transport chain

• Citric acid cycle, the electron transport chain, and glycolysis

• Glycolysis, electron transport chain, and the citric acid cycle

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The electron transport chain

• does not require oxygen, and involves proteins in the outer membrane of mitochondria.

• does not require oxygen, and involves proteins in the cristae of mitochondria.

• requires oxygen, and involves proteins in the outer membrane of mitochondria.

• requires oxygen, and involves proteins in the cristae of mitochondria.

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During fasting, a person’s cells draw on several different energy reserves. Three molecules that are important energy storage locations in the body are

• carbohydrates, water, and lipids

• glucose, glucagon, and glycogen

• ATP, glycogen, and triglyceride

• ADP, DNA, and RNA

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