Biochem Exam 3 quiz questions

Chapter 9 — Question 1: Oxaloacetic acid (OAA) can pass into the mitochondrial matrix if it is first converted into: A. Acetyl-CoA | B. Glucose | C. Malic acid | D. Succinic acid

C. Malic acid

Chapter 9 — Question 2: NADH and NADPH are major coenzymes for oxidoreductases. While nearly equivalent in redox potential, the two coenzymes often function in different metabolic actions. In general: A. NADPH functions with enzymes involved in fermentation | B. NADH is a coenzyme for lipases | C. NADH is often involved in degradation and NADPH in synthesis | D. NADPH is a coenzyme used by barbarians for energy when they lack cereals

C. NADH is often involved in degradation and NADPH in synthesis

Chapter 9 — Question 3: Which of the following substances would slow the citric acid cycle? A. Malic acid and isocitric acid | B. Oxaloacetic acid and alpha-ketoglutaric acid | C. Fumaric acid and succinic acid | D. Citric acid and succinyl CoA

D. Citric acid and succinyl CoA

Chapter 9 — Question 4: Facultative anaerobes have metabolic processes which allow them to: A. Generate energy by growing in the presence of oxygen | B. Use only hydrogen peroxide as an electron acceptor | C. Have an absolute requirement for molecular oxygen | D. Use oxygen as an electron acceptor, but also protect themselves against molecular oxygen

D. Use oxygen as an electron acceptor, but also protect themselves against molecular oxygen

Chapter 9 — Question 5: You may have learned the the term “amphoteric” used in general chemistry to describe a substance which could function as either an acid or a base. When we describe the TCA cycle as amphibolic, we mean that it: A. Amplifies substrates so that large, rolling molecules are produced | B. Can carry out catabolic reactions | C. Can carry out anabolic reactions | D. Is capable of both synthetic and degradative reactions

D. Is capable of both synthetic and degradative reactions

Chapter 9 — Question 6: What process is the bridge between glycolysis and the citric acid cycle? A. the reduction of NAD+ to NADH | B. the transfer of electrons from NAD+ to FAD | C. The conversion of CoA to CoASH | D. the conversion of pyruvate to acetyl-CoA

D. the conversion of pyruvate to acetyl-CoA

Chapter 9 — Question 7: Which of the following is true? A. Substances with a more negative reduction potential than the hydrogen half-reaction have a higher affinity for electrons than hydrogen | B. The reduction potential of substances does not matter to its affinity for electrons | C. Substances with a more positive reduction potential than the hydrogen half-reaction have a lower affinity for electrons than hydrogen | D. Substances with a more negative reduction potential than the hydrogen half-reaction have a lower affinity for electrons than hydrogen

D. Substances with a more negative reduction potential than the hydrogen half-reaction have a lower affinity for electrons than hydrogen

Chapter 9 — Question 8: Which of these describes aerotolerant anaerobes? A. organisms that are dependent on oxygen for energy production and do not use fermentation | B. organisms that only grow in the absence of oxygen and rely on fermentation for energy | C. organisms that can grow in the presence of oxygen because they neutralize radical oxygen species, but rely on fermentation for energy | D. organisms that can detoxify oxygen species and can use oxygen or fermentation to generate energy

C. organisms that can grow in the presence of oxygen because they neutralize radical oxygen species, but rely on fermentation for energy

Chapter 9 — Question 9: What are the first organisms on earth thought to have lived upon? A. Superoxide radicals | B. Ammonia | C. Organic molecules produced by natural activities such as lightning, thermal forces, and solar radiation | D. Oxygen

C. Organic molecules produced by natural activities such as lightning, thermal forces, and solar radiation

Chapter 9 — Question 10: Which of the following reactions occur in the mitochondria? A. electron transport pathway | B. All of these occur in the mitochondria | C. oxidative phosphorylation | D. the citric acid cycle

B. All of these occur in the mitochondria

Chapter 9 — Question 11: Early life forms lived in an atmosphere largely devoid of free oxygen molecules. Most present-day life forms use molecular oxygen as: A. Raw material for synthesis of DNA | B. Starting materials for synthesis of lipids | C. The initial substances from which starches such as glycogen or amylopectin are formed | D. The final acceptor for electrons removed from hydrogen during digestion

D. The final acceptor for electrons removed from hydrogen during digestion

Chapter 9 — Question 12: What 4 substances regulate the citric acid cycle? (4 points)

ATP, ADP, NADH, ionized calcium

Chapter 9 — Question 13: Which steps are the rate-limiting steps in the citric acid cycle? (3 points)

Step 1) Citrate synthase; Step 3) Isocitrate dehydrogenase; Step 4) α-ketoglutarate dehydrogenase

Chapter 9 — Question 14.1: Match the enzyme with its action in the citric acid cycle. Acetyl-CoA is bound to oxaloacetate to form citrate

Citrate synthase

Chapter 9 — Question 14.2: Match the enzyme with its action in the citric acid cycle. Citrate is converted to isocitrate

Aconitase

Chapter 9 — Question 14.3: Match the enzyme with its action in the citric acid cycle. Isocitrate is oxidized forming alpha-ketoglutarate and CO2

Isocitrate dehydrogenase

Chapter 9 — Question 14.4: Match the enzyme with its action in the citric acid cycle. Alpha-ketoglutarate is oxidized to form succinyl-CoA

Alpha-ketoglutarate dehydrogenase complex

Chapter 9 — Question 14.5: Match the enzyme with its action in the citric acid cycle. Succinyl-CoA forms succinate

Succinate-CoA synthetase

Chapter 9 — Question 14.6: Match the enzyme with its action in the citric acid cycle. Succinate is oxidized to form fumarate and FADH2

Succinate dehydrogenase

Chapter 9 — Question 14.7: Match the enzyme with its action in the citric acid cycle. Fumarate is hydrated and converted to malate

Fumarase

Chapter 9 — Question 14.8: Match the enzyme with its action in the citric acid cycle. Malate is oxidized to form OAA and NADH

Malate dehydrogenase

Chapter 9 — Question 15: Nicotinamide is an essential component of coenzymes A. ATP and GTP | B. FAD and FADH2 | C. NADH and NADPH | D. Citric acid

C. NADH and NADPH

Chapter 10 — Question 1: Among the important antioxidant molecules taken in with our food are: A. Hypochlorous acid and nitric oxide | B. Nitroglycerine and FAD | C. α-Tocopherol, β-carotene, and ascorbic acid | D. Hydrogen peroxide and sodium chloride

C. α-Tocopherol, β-carotene, and ascorbic acid

Chapter 10 — Question 2.1: Match the ETC complex with its biochemical name. ETC Complex I

NADH dehydrogenase

Chapter 10 — Question 2.2: Match the ETC complex with its biochemical name. ETC Complex II

Succinate dehydrogenase

Chapter 10 — Question 2.3: Match the ETC complex with its biochemical name. ETC Complex III

Cytochrome bc1 complex

Chapter 10 — Question 2.4: Match the ETC complex with its biochemical name. ETC Complex IV

Cytochrome oxidase

Chapter 10 — Question 3: Glucose may be oxidized by a combination of several pathways and cycles. If the oxidation of glucose relied on glycolysis, the citric acid cycle, ETC, and oxidative phosphorylation, how many moles of ATP could be produced by complete oxidation of a mole of glucose-6-phosphate? A. 6 | B. 48 | C. 30 | D. 15

C. 30

Chapter 10 — Question 4: Long known to be protective against scurvy, Vitamin C owes at least some of its value to the fact that it acts as an antioxidant. This means that vitamin C itself is: A. A base | B. An oxidizing agent | C. A reducing agent | D. An acid

C. A reducing agent

Chapter 10 — Question 5.1: Match the antioxidant enzyme system with its action. Superoxide dismutase

Catalyzes the formation of H₂O₂ and O₂ from the superoxide radical

Chapter 10 — Question 5.2: Match the antioxidant enzyme system with its action. Glutathione peroxidase

Reduces H₂O₂ and transforms organic peroxides into alcohols

Chapter 10 — Question 5.3: Match the antioxidant enzyme system with its action. Peroxiredoxins

Detoxifies peroxides

Chapter 10 — Question 5.4: Match the antioxidant enzyme system with its action. Catalase

Catalyzes the conversion of H₂O₂ to H₂O and O₂

Chapter 10 — Question 6: The ATP synthase complex is often called the F₁F₀ ATP synthase. This refers to the fact that the synthase enzyme is composed of: A. A shaft or stator connecting an Fo motor and an F1 ATP generator | B. An F1 proton-powered motor and an Fo ATP generator | C. A polynucleotide gel connected to the ER | D. An Fo motor and an F1 ATP generator connected to a stator which can drive a small set of gears

A. A shaft or stator connecting an Fo motor and an F1 ATP generator

Chapter 10 — Question 7: A single reduced molecule or NADH is considered to be equivalent in energy to 2.5 ATP molecules. Oxidation of a mole of FADH₂ yields 1.5 ATP. In chemical terms, this would mean that: A. FADH₂ has a higher standard oxidation potential than NADH | B. NADH₂ has a higher standard oxidation potential than FADH₂ | C. FADH₂ has a higher standard oxidation potential than NADH | D. NADH has a higher standard oxidation potential than FADH₂

D. NADH has a higher standard oxidation potential than FADH₂

Chapter 10 — Question 8: Formation of ATP is increased by: A. A high ratio of ATP to ADP | B. A high ratio of ATP to AMP | C. A high ratio of ADP to ATP | D. A high ratio of ATP to glucose

C. A high ratio of ADP to ATP

Chapter 10 — Question 9: Depriving muscle tissue of oxygen is a dangerous process known as: A. Hyperoxia | B. Hypercatalasemia | C. Reduction | D. Ischemia

D. Ischemia

Chapter 10 — Question 10: From which processes are the reduced coenzymes in the electron transport chain derived? A. gluconeogenesis, glycolysis, and glycogenolysis | B. glycogenolysis, glycogenesis, and gluconeogenesis | C. fatty acid oxidation, oxidative phosphorylation, histidine biosynthesis | D. glycolysis, the citric acid cycle, and fatty acid oxidation

D. glycolysis, the citric acid cycle, and fatty acid oxidation

Chapter 10 — Question 11: Which of the following is not an alternate name for ubiquinone? A. Coenzyme U | B. CoQ | C. Coenzyme Q | D. UQ

A. Coenzyme U

Chapter 10 — Question 12: Reactive oxygen species such as hydrogen peroxide and superoxide radicals may be generated by scavenger cells and used to destroy unwanted invaders or metabolic fragments. The ROS are generated by a process called the: A. Oxidative burst | B. Respiratory burst | C. Thylakoid disk | D. Charge coupled inducer

B. Respiratory burst

Chapter 10 — Question 13: Sailors who were called limeys had the right idea about what caused scurvy, and ate limes to give themselves the nutrient they were missing. A. True | B. False

True

Chapter 10 — Question 14: Formation of ATP as a result of passage of electrons through the ETC is sometimes called oxidative phosphorylation because: A. As substrates are reduced, ADP is converted to ATP | B. As substrates are oxidized, ADP is phosphorylated to form ATP | C. As ADP is phosphorylated, glucose is reduced in mitochondria | D. The endoplasmic reticulum becomes oxidized due to the relatively oxidative environment of the nucleus

B. As substrates are oxidized, ADP is phosphorylated to form ATP

Chapter 10 — Question 15: Which is the correct order of decreasing size? A. Mitochondria, eukaryotic cells, ATP synthase | B. ATP synthase, mitochondria, eukaryotic cell | C. Eukaryotic cells, mitochondria, ATP synthase | D. Eukaryotic cells, ATP synthase, mitochondria

C. Eukaryotic cells, mitochondria, ATP synthase

Chapter 10 — Question 16: Mitchell's chemiosmotic theory suggested that a high concentration of protons outside the mitochondrial membrane: A. Reduced the oxidation potential | B. Generated a low electrical potential and proton equalization which caused protons to exit the mitochondria | C. Generated a voltage and a protonmotive force which helped drive the ATP synthase | D. Made the interior of the membrane highly acidic

C. Generated a voltage and a protonmotive force which helped drive the ATP synthase

Chapter 10 — Question 17.1: Match the reactive oxygen species with its chemical formula. Superoxide radical

O₂•⁻

Chapter 10 — Question 17.2: Match the reactive oxygen species with its chemical formula. Hydrogen peroxide

H₂O₂

Chapter 10 — Question 17.3: Match the reactive oxygen species with its chemical formula. Hydroxyl radical

•OH

Chapter 10 — Question 17.4: Match the reactive oxygen species with its chemical formula. Singlet oxygen

¹O₂

Chapter 10 — Question 18: Obligate anaerobes have difficulty living in environments containing: A. Nitrogen | B. Oxygen | C. Carbon dioxide | D. Water

B. Oxygen

Chapter 10 — Question 19: Scurvy is a result of a deficiency in which nutrient? A. α-tocopherol | B. oxygen | C. β-carotene | D. Ascorbic acid

D. Ascorbic acid

Chapter 11 — Question 1: Which of the following transport processes requires no energy? A. Secondary active transport | B. Facilitated diffusion | C. Glycolysis | D. Primary active transport

B. Facilitated diffusion

Chapter 11 — Question 2: Although water can move across cell membranes in response to changes in osmotic pressure, cellular membranes usually have a distinct nonpolar character, making it possible for them to retain water and to bar polar molecules from passage. Certain cells, such as those in kidney tubules, must allow ready passage of water molecules. In order to do so, the cells possess special molecular structures called: A. Chloride channels | B. Golgi apparatus | C. Vesicles | D. Aquaporins

D. Aquaporins

Chapter 11 — Question 3: Cystic fibrosis results from an inability of the body to transport a fundamentally important substance. Which one? A. Lecithin | B. Glucose | C. Fatty acids | D. Chloride ion

D. Chloride ion

Chapter 11 — Question 4: Which of the following is not an eicosanoid? A. Prostaglandin A | B. Leukotriene C4 | C. Chloesterol | D. TXB2

C. Chloesterol

Chapter 11 — Question 5: Which of the following is not an eicosanoid? A. Prostaglandin | B. Leukotriene | C. Surfactant | D. Thromboxane

C. Surfactant

Chapter 11 — Question 6: In patients with cystic fibrosis, what causes the thick mucus and secretions typical of the disease? A. Excessive secretion of glucose due to a defective CTFR | B. Excessive secretion of chloride ions due to an overactive CTFR | C. Retention of potassium ions due to an overactive CFTR | D. Retention of chloride ions due to a missing or defective CFTR

D. Retention of chloride ions due to a missing or defective CFTR

Chapter 11 — Question 7.1: Match the term with its definition. Fatty acids

Monocarboxylic acids with hydrocarbon chains of 12 - 20 carbons

Chapter 11 — Question 7.2: Match the term with its definition. Triacylglycerols

Esters of glycerol with three fatty acid molecules

Chapter 11 — Question 7.3: Match the term with its definition. Wax esters

Complex mixtures of nonpolar lipids composed of mainly long-chain fatty acids and long-chain alcohols

Chapter 11 — Question 7.4: Match the term with its definition. Eicosanoids

Derivatives of fatty acids that are derived from arachidonic acid or eicosapentaenoic acid

Chapter 11 — Question 7.5: Match the term with its definition. Unsaturated fatty acid

Fatty acid with one or more C = C double bonds

Chapter 11 — Question 7.6: Match the term with its definition. Nonessential fatty acids

Fatty acids that can be synthesized by the body

Chapter 11 — Question 7.7: Match the term with its definition. Saturated fatty acids

Fatty acids with only C - C single bonds

Chapter 11 — Question 7.8: Match the term with its definition. Essential fatty acids

Fatty acids that cannot be synthesized by the body and must be obtained from the diet

Chapter 11 — Question 8: In general, you'd probably be healthier if your blood plasma contained higher levels of: A. Chylomicrons | B. LDL | C. VLDL | D. HDL

D. HDL

Chapter 11 — Question 9: Both omega-3 and omega-6 fatty acids are essential for health. If you wanted a diet rich in both you should choose: A. Pork and catfish | B. Salmon, poultry, soybean, and sunflower oils | C. Beefsteak | D. Sunflower seeds

B. Salmon, poultry, soybean, and sunflower oils

Chapter 11 — Question 10: Most naturally-occurring fatty acids: A. Are in the alpha-conformation | B. Have an even number of carbon atoms | C. Make the compound highly reactive with water | D. Are in the trans- configuration

B. Have an even number of carbon atoms

Chapter 11 — Question 11: Which of the following classes of lipids are not derived from fatty acids? A. Sphingolipids | B. Isoprenoids | C. Wax esters | D. Phosphoglycerides

B. Isoprenoids

Chapter 11 — Question 12: Hydrogenation of an unsaturated fatty acid usually results in a compound having: A. Increased solubility in base | B. Decreased melting point | C. Increased melting point | D. Decreased solubility in acid

C. Increased melting point

Chapter 11 — Question 13: Fatty acids are often transported attached to albumin. In the absence of lipoprotein or albumin, lysophospholipid molecules may form structures in aqueous solution called: A. Micelles | B. Vesicles | C. Adipocytes | D. Membranes

A. Micelles

Chapter 11 — Question 14: Sperm whales possess large cavities in their heads; the lipid-rich contents of these cavities are one of the reasons these whales are still sought. In particular, the cavity contains a lipid which is highly effective as an additive for automatic transmission fluid. The compound, highly resistant to the shear forces between gear teeth, is made up of a long chain lipid alcohol and a long chain fatty acid joined by an ester bond. You would most correctly classify this as a: A. Wax | B. Essential fatty acid | C. Triacylglycerol | D. Soap

A. Wax

Chapter 11 — Question 15: Individual classes of lipids may include molecules which have very different functional groups, but a characteristic common to all is that they: A. Are soluble only in hot water | B. Are soluble in nonpolar solvents | C. React with base | D. Can all be reduced

B. Are soluble in nonpolar solvents

Chapter 11 — Question 16: If a triacylglycerol had more unstaurated fatty acids than saturated fatty acids, what properties would you expect it to have? A. It would likely be a liquid at room temperature | B. It will be a charged molecule | C. It would be a solid at room temperature | D. The amount of unsaturated vs saturated fatty acids has no impact on the triacylglycerol

A. It would likely be a liquid at room temperature

Chapter 11 — Question 17: Which of the following is a reason that triacylglycerols make better storage for energy than other types of molecules? A. They are hydrophobic, so they form into compact droplets stored within adipose cells | B. They are slippery because they're fats | C. They are more oxidized than carbohydrates, so they hold on to their electrons better | D. There is more fat in the body than anything else so it's more available

A. They are hydrophobic, so they form into compact droplets stored within adipose cells

Chapter 11 — Question 18: If you centrifuge a sample of blood or of liver homogenate, some lipids may rise to the surface, forming a layer or cake of lipid. The lipid fraction most likely to collect atop the aqueous liquid at the bottom of the lipid fraction is: A. HDL (high-density lipoprotein) | B. LDL (low-density lipoprotein) | C. Chylomicrons | D. VLDL (very low-density lipoprotein)

A. HDL (Blackboard answer key; scientifically, C. Chylomicrons would be expected to float)

Chapter 11 — Question 19: Phospholipids are similar in that they all contain a diacylglycerol portion attached to a phosphate, and occasionally to some other functional group such as ethanolamine or sphingosine. In addition to their nonpolar character, all phospholipids have another physical property. Which one? A. They all have a very polar portion, increasing their solubility in water | B. All phospholipids are formed from arachidonic acid | C. All phospholipids have strong odors | D. All phospholipids are derived from ω-3 fatty acids

A. They all have a very polar portion, increasing their solubility in water

Chapter 11 — Question 20: One of the most endearing characteristics of biomembranes is that they are relatively waterproof and self-sealing. In order to maintain their reputation as self-sealers, biomembranes need a supply of this metallic ion: A. Copper | B. Iron | C. Calcium | D. Zinc

C. Calcium

Chapter 11 — Question 21: Triacylglycerols found in plants are more likely than those in animals to be: A. Polyunsaturated | B. Saturated | C. Nonflammable | D. Flammable

A. Polyunsaturated

Chapter 12 — Question 1: What is the proper name for a fat cell that stores lipids? A. Astrocyte | B. Hepatocyte | C. Adipocyte | D. Enterocyte

C. Adipocyte

Chapter 12 — Question 2: Untreated diabetics sometimes have a fruity odor to their breath due to the presence of a volatile ketone body. Which is the volatile ketone body? A. Pyruvic acid | B. β-hydroxybutyric acid | C. Acetone | D. Acetoacetic acid

C. Acetone

Chapter 12 — Question 3: During starvation, brain tissue that lacks a ready supply of glucose may oxidize: A. Lactic acid | B. Some ketone bodies | C. Hydrogen | D. Fructose

B. Some ketone bodies

Chapter 12 — Question 4: Cholesterol is not oxidized for energy within the body, but you might help eliminate it from your body if you could increase the formation of: A. Bile salts or acids | B. Seroid hormones | C. Protein hormones | D. Triacylglycerols

A. Bile salts or acids

Chapter 12 — Question 5: Statins lower serum cholesterol how? A. By acting as competitive inhibitors of acetyl-CoA reductase | B. By inhibiting acetyl-CoA carboxylase | C. By acting as competitive inhibitors of HMG-CoA reductase | D. By inhibiting carintine acyltransferase 1

C. By acting as competitive inhibitors of HMG-CoA reductase

Chapter 12 — Question 6: Some triacylglycerols are exogenous, and others are endogenous (synthesized within the body). Endogenous triacylglycerols are typically synthesized in: A. Liver | B. Muscle tissue | C. Heart tissue | D. Adipose tissue

A. Liver

Chapter 12 — Question 7: Although fatty acid oxidation occurs mostly in the mitochondria, fatty acids themselves can't cross the mitochondrial membrane. How do they pass? A. As bile acids or salts | B. As esters of carnitine | C. Attached to esters of alcohols | D. As amides of glycine

B. As esters of carnitine

Chapter 12 — Question 8: What is the initial process for breaking down branched fatty acids? A. γ-oxidation | B. α-oxidation | C. Transesterification | D. β-oxidation

B. α-oxidation

Chapter 12 — Question 9: Fatty acid synthesis is slowed or prevented by which compound? A. Glucagon | B. Glucose | C. Testosterone | D. Insulin

A. Glucagon

Chapter 12 — Question 10: The major site of cholesterol synthesis is: A. The intestines | B. The ovaries | C. The liver | D. The skin

C. The liver

Chapter 12 — Question 11: When does the β-oxidation spiral stop? A. When the body has enough cholesterol from the diet | B. When fatty acids are transported to target cells | C. When the Angels win the pennant | D. When a 4-carbon acyl-CoA is cleaved to form 2 molecules of acetyl-CoA

D. When a 4-carbon acyl-CoA is cleaved to form 2 molecules of acetyl-CoA

Chapter 12 — Question 12: Bile acids are excreted into the intestine where they become bile salts due to: A. The alkaline environment of the intestine | B. The acidic environment of the stomach | C. Alkaline hydrolysis | D. The formation of esters

A. The alkaline environment of the intestine

Chapter 12 — Question 13: Where does the synthesis of phospholipids occur? A. Brain mitochondria | B. Neutrophil cytoplasma | C. Liver mitochondria | D. Smooth endoplasmic reticulum

D. Smooth endoplasmic reticulum

Chapter 12 — Question 14: In the initial stages, fatty acid synthesis occurs: A. In the liver parenchyma | B. Only in association with the endoplasmic reticulum | C. In the cytoplasm | D. In the arterial epithelium

C. In the cytoplasm

Chapter 12 — Question 15: Detoxication processes render many dangerous metabolites less hazardous. An enzyme involved in the ETC is particularly useful in destruction of drugs and other substances which come from outside the body. Which one? A. HMG-CoA reductase | B. Cyclooxygenase | C. CoA reductase | D. Cytochrome P450

D. Cytochrome P450

Chapter 12 — Question 16: Which enzyme catalyzes the reaction to convert triglycerides into fatty acids and glycerol? A. Lipoprotein lipase | B. Pyruvate carboxylase | C. β-hydroxyl-CoA dehydrogenase | D. Thiolase

A. Lipoprotein lipase

Chapter 12 — Question 17: All fatty acids in the body are derived in part or in whole from what moelcule? A. Acetyl-CoA | B. Glucose-6-phosphate | C. Chylomicrons | D. HMG-CoA

A. Acetyl-CoA

Chapter 12 — Question 18: What is the purpose of cytochrome C5, cytochrome B5, and desaturase? A. To introduce double bonds to saturated fatty acids | B. To catalyze the hydration of β-hydroxyacyl-CoA | C. To elongate fatty acid structures | D. To break down triacylglycerols

A. To introduce double bonds to saturated fatty acids

Chapter 12 — Question 19: Chylomicrons are fromed by which type of cell? A. Hepatocytes | B. Enterocytes | C. Leukocytes | D. Erythrocytes

B. Enterocytes

Chapter 12 — Question 20: Free fatty acids are transported in the body by: A. Luminol | B. Albumin | C. Cholesterol | D. Glycogen

B. Albumin

Chapter 12 — Question 21: Which enzyme catalyzes the cleavage of β-ketoacyl-CoA to form acyl-CoA and acetyl-CoA? A. Phospholipase | B. Isopentyl pyrophosphate isomerase | C. Thiolase | D. HMG-CoA reducatse

C. Thiolase

Chapter 12 — Question 22: Fatty acid synthesis is promoted by which hormone? A. Insulin | B. Testosterone | C. Epinephrine | D. Glucagon

A. Insulin