Question 1

The process of making large molecules from smaller ones is called:

Accepted Answer

A) catabolism. 
B) anabolism. 
C) hydrolysis. 
D) metabolism. 
A) catabolism. 
B) anabolism. 
C) hydrolysis. 
D) metabolism. B

Question 2

Explain the importance of nicotinamide adenine dinucleotide (NAD)and flavin adenine dinucleotide (FAD)in oxidative metabolism.

Accepted Answer

Nicotinamide adenine dinucleotide (NAD) and flavin adenine dinucleotide (FAD) are coenzymes that play crucial roles in oxidative metabolism.

NAD and FAD are involved in redox reactions, which are essential for producing energy in the form of ATP. During the process of cellular respiration, NAD and FAD accept and donate electrons, allowing the transfer of energy from nutrients to ATP. NAD and FAD act as electron carriers, shuttling electrons from one metabolic reaction to another.

In glycolysis, the Krebs cycle, and the electron transport chain, NAD and FAD are essential for the breakdown of glucose and other nutrients to generate ATP. Without these coenzymes, the production of ATP would be severely compromised, leading to a lack of energy for cellular processes.

Additionally, NAD is a substrate for important enzymes such as sirtuins, which play a role in regulating cellular processes such as DNA repair, gene expression, and metabolism. FAD is a prosthetic group for enzymes involved in fatty acid oxidation and the Krebs cycle.

Overall, NAD and FAD are fundamental to oxidative metabolism, as they facilitate the transfer of electrons and the production of ATP, as well as playing key roles in regulating cellular processes. Their importance in energy production and cellular function underscores their significance in overall metabolism.

Question 3

Which cellular organelle is the primary site of ATP production?

Accepted Answer

A) ribosome 
B) cytoplasm 
C) endoplasmic reticulum 
D) mitochondrion 
A) ribosome 
B) cytoplasm 
C) endoplasmic reticulum 
D) mitochondrion D

Question 4

When we eat more Calories than we need,the body responds by using:

Accepted Answer

A) fat for energy and carbohydrates for storage as glycogen. 
B) protein for energy and carbohydrates converted to body fat. 
C) carbohydrates for energy and dietary fats stored as body fat. 
D) ketones for energy and proteins converted to body fat. 
A) fat for energy and carbohydrates for storage as glycogen. 
B) protein for energy and carbohydrates converted to body fat. 
C) carbohydrates for energy and dietary fats stored as body fat. 
D) ketones for energy and proteins converted to body fat.

Question 5

An anabolic reaction in which water is released as a by-product is called:

Accepted Answer

A) hydrolysis. 
B) dehydration synthesis. 
C) phosphorylation. 
D) dephosphorylation. 
A) hydrolysis. 
B) dehydration synthesis. 
C) phosphorylation. 
D) dephosphorylation.

Question 6

Explain how a low-carbohydrate diet affects the rate of the TCA.

Accepted Answer

A low-carbohydrate diet affects the rate

Question 7

Explain how a low-carbohydrate diet leads to the production of ketone bodies.

Accepted Answer

A low-carbohydrate diet leads to the pro

Question 8

Amino acids are a primary source of ATP.

Accepted Answer

A) True 
 B)False

Question 9

The final stage of glucose oxidation,which is carried out in the inner membranes of the mitochondria,involves which series of reactions?

Accepted Answer

A) oxidation-reduction 
B) tricarboxylic acid (TC
A) cycle 
C) electron transport chain 
D) beta-oxidation 
A) oxidation-reduction 
B) tricarboxylic acid (TC
A) cycle 
C) electron transport chain 
D) beta-oxidation

Question 10

As we sleep,the body maintains blood glucose levels by synthesizing glucose through:

Accepted Answer

A) gluconeogenesis. 
B) lipolysis. 
C) proteolysis. 
D) hydrolysis. 
A) gluconeogenesis. 
B) lipolysis. 
C) proteolysis. 
D) hydrolysis.

Question 11

For people with type 2 diabetes,the hormone insulin triggers:

Accepted Answer

A) glycogen,triglyceride,and protein anabolism. 
B) protein catabolism. 
C) essential fatty acid catabolism. 
D) glucose catabolism. 
A) glycogen,triglyceride,and protein anabolism. 
B) protein catabolism. 
C) essential fatty acid catabolism. 
D) glucose catabolism.

Question 12

Which molecule is common to the metabolism of carbohydrates,fatty acids,amino acids,and alcohol?

Accepted Answer

A) phosphofructokinase 
B) hexokinase 
C) carnitine 
D) acetyl CoA 
A) phosphofructokinase 
B) hexokinase 
C) carnitine 
D) acetyl CoA

Question 13

Which of the following reactions represents dephosphorylation?

Accepted Answer

A) breakdown of ATP 
B) synthesis of sucrose 
C) breakdown of maltose 
D) synthesis of glucose phosphate 
A) breakdown of ATP 
B) synthesis of sucrose 
C) breakdown of maltose 
D) synthesis of glucose phosphate

Question 14

Elevated levels of the hormone ________,coupled with a sedentary lifestyle,have been linked to an increased risk of excess belly fat and glucose intolerance.

Accepted Answer

A) insulin 
B) glucagon 
C) epinephrine 
D) cortisol 
A) insulin 
B) glucagon 
C) epinephrine 
D) cortisol

Question 15

The catabolism of triglycerides is called:

Accepted Answer

A) glycolysis. 
B) TCA. 
C) lipolysis. 
D) lipogenesis. 
A) glycolysis. 
B) TCA. 
C) lipolysis. 
D) lipogenesis.

Question 16

Alcohol can be converted to glucose.

Accepted Answer

A) True 
 B)False

Question 17

Which process plays a critical role in the synthesis of nonessential amino acids?

Accepted Answer

A) gluconeogenesis 
B) transamination 
C) ketosis 
D) lipogenesis 
A) gluconeogenesis 
B) transamination 
C) ketosis 
D) lipogenesis

Question 18

The glycolysis of glucose occurs in which cellular component?

Accepted Answer

A) mitochondrion 
B) cytosol 
C) nucleus 
D) intercellular fluid 
A) mitochondrion 
B) cytosol 
C) nucleus 
D) intercellular fluid

Question 19

Disaccharides are formed by what type of reaction?

Accepted Answer

A) dehydration synthesis 
B) hydrolysis 
C) hydrogen bonding 
D) phosphorylation 
A) dehydration synthesis 
B) hydrolysis 
C) hydrogen bonding 
D) phosphorylation

Question 20

When oxygen is plentiful,pyruvate from glucose is converted to:

Accepted Answer

A) acetyl CoA. 
B) glycogen. 
C) fatty acid. 
D) lactic acid. 
A) acetyl CoA. 
B) glycogen. 
C) fatty acid. 
D) lactic acid.

Exam 11: Metabolism: From Food to Life

The process of making large molecules from smaller ones is called:

Explain the importance of nicotinamide adenine dinucleotide (NAD)and flavin adenine dinucleotide (FAD)in oxidative metabolism.

Which cellular organelle is the primary site of ATP production?

When we eat more Calories than we need,the body responds by using:

An anabolic reaction in which water is released as a by-product is called:

Explain how a low-carbohydrate diet affects the rate of the TCA.

Explain how a low-carbohydrate diet leads to the production of ketone bodies.

Amino acids are a primary source of ATP.

The final stage of glucose oxidation,which is carried out in the inner membranes of the mitochondria,involves which series of reactions?

As we sleep,the body maintains blood glucose levels by synthesizing glucose through:

For people with type 2 diabetes,the hormone insulin triggers:

Which molecule is common to the metabolism of carbohydrates,fatty acids,amino acids,and alcohol?

Which of the following reactions represents dephosphorylation?

Elevated levels of the hormone ________,coupled with a sedentary lifestyle,have been linked to an increased risk of excess belly fat and glucose intolerance.

The catabolism of triglycerides is called:

Alcohol can be converted to glucose.

Which process plays a critical role in the synthesis of nonessential amino acids?

The glycolysis of glucose occurs in which cellular component?

Disaccharides are formed by what type of reaction?

When oxygen is plentiful,pyruvate from glucose is converted to:

The Science of Nutrition: Linking Food, function, and Health

Designing a Healthful Diet

The Human Body: Are We Really What We Eat

Carbohydrates: Plant-Derived Energy Nutrients

in Depth: Alcohol

Lipids: Essential Energy-Supplying Nutrients

Vitamins and Minerals: Micronutrients With Macro Powers

Phytochemicals

Disordered Eating

Proteins: Crucial Components of All Body Tissues

Nutrients Involved in Energy Metabolism

Nutrients Involved in Fluid and Electrolyte Balance

Nutrients Involved in Antioxidant Function and Vision

Nutrients Involved in Bone Health

Nutrients Involved in Blood Health and Immunity

Achieving and Maintaining a Healthful Body Weight

Nutrition and Physical Activity: Keys to Good Health

Consumer Issues: Food Safety, Production, and Impact on the Environment

Nutrition Through the Life Cycle: Pregnancy and the First Year of Life

Nutrition Through the Life Cycle: Childhood and Adolescence

Nutrition Through the Life Cycle: The Later Years

Global Nutrition

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