Question 1

Folate,through its role in single carbon metabolism participates in reactions that result in what modification of DNA?

Accepted Answer

A) methylation. 
B) oxidation. 
C) phoshphorylation. 
D) reduction. 
A) methylation. 
B) oxidation. 
C) phoshphorylation. 
D) reduction. A

Question 2

Among these statements about the homocysteine hypothesis,which one is FALSE?

Accepted Answer

A) Inadequate folate intake results in elevated levels of homocysteine in the blood. 
B) Homocysteine damages blood vessels. 
C) Homocysteine may contribute to the development of atherosclerosis. 
D) The homocysteine hypothesis has been well demonstrated by intervention trials. 
A) Inadequate folate intake results in elevated levels of homocysteine in the blood. 
B) Homocysteine damages blood vessels. 
C) Homocysteine may contribute to the development of atherosclerosis. 
D) The homocysteine hypothesis has been well demonstrated by intervention trials. D

Question 3

Which nutrient does NOT play a role in blood clotting or blood thinning?

Accepted Answer

A) potassium. 
B) vitamin K. 
C) calcium. 
D) vitamin E. 
A) potassium. 
B) vitamin K. 
C) calcium. 
D) vitamin E. A

Question 4

Which of the following nutrients does NOT play key role in the maintenance of the inorganic matrix,the hydroxyapatite crystals,of bone?

Accepted Answer

A) potassium. 
B) vitamin D. 
C) calcium. 
D) phosphorus. 
A) potassium. 
B) vitamin D. 
C) calcium. 
D) phosphorus.

Question 5

Which nutrient is important in preventing defects during the formation of the neural tube?

Accepted Answer

A) vitamin B12 only 
B) folate 
C) niacin 
D) thiamin only 
A) vitamin B12 only 
B) folate 
C) niacin 
D) thiamin only

Question 6

Present the role of vitamin A in the immune system.

Accepted Answer

Vitamin A controls the gene expression t

Question 7

Which vitamin is required for the formation of lymphocytes such as B- and T- cells?

Accepted Answer

A) Vitamin E 
B) Vitamin B6 
C) Vitamin C 
D) Vitamin D 
A) Vitamin E 
B) Vitamin B6 
C) Vitamin C 
D) Vitamin D

Question 8

Which mineral forms fluoroapatite and strengthens tooth enamel?

Accepted Answer

A) potassium 
B) magnesium 
C) calcium 
D) fluoride 
A) potassium 
B) magnesium 
C) calcium 
D) fluoride

Question 9

Among these statements about nutrients and the nervous function,which one is FALSE?

Accepted Answer

A) Pellagra,a niacin-deficiency disease,is associated with symptoms such as dementia. 
B) Vitamin C is essential to eye health by preventing xerophtalmia. 
C) High intakes of lutein and zeaxanthin,are associated with reduced risk of macular degeneration. 
D) Tyrosine is required for the synthesis of dopamine and norepinephrine. 
A) Pellagra,a niacin-deficiency disease,is associated with symptoms such as dementia. 
B) Vitamin C is essential to eye health by preventing xerophtalmia. 
C) High intakes of lutein and zeaxanthin,are associated with reduced risk of macular degeneration. 
D) Tyrosine is required for the synthesis of dopamine and norepinephrine.

Question 10

Which mineral is required for proteins to bind to DNA?

Accepted Answer

A) copper 
B) zinc 
C) manganese 
D) iron 
A) copper 
B) zinc 
C) manganese 
D) iron

Question 11

Energy metabolism,especially the electron transport chain,is a source of what kind of molecules?

Accepted Answer

A) nitrogen gas 
B) reactive oxygen species. 
C) methane 
D) reactive iron species 
A) nitrogen gas 
B) reactive oxygen species. 
C) methane 
D) reactive iron species

Question 12

A nutrient-derivative forms a nutrient-derivative-receptor complex that binds to DNA and ultimately mRNA is formed.What is being described?

Accepted Answer

A) The role of retinoic acid in gene expression. 
B) The role of vitamin D in suppressing the expression of calcium transport proteins. 
C) The role of iodine in expression genes related to bone health. 
D) The role of glucose in controlling the expression of thyroid hormone. 
A) The role of retinoic acid in gene expression. 
B) The role of vitamin D in suppressing the expression of calcium transport proteins. 
C) The role of iodine in expression genes related to bone health. 
D) The role of glucose in controlling the expression of thyroid hormone.

Question 13

Which mineral,as a component of a hormone,influences the expression of genes involved in the regulation of basal metabolism (the amount of energy consumed at rest)?

Accepted Answer

A) calcium 
B) zinc 
C) iron 
D) iodine 
A) calcium 
B) zinc 
C) iron 
D) iodine

Question 14

Which of the following statements about nutrients and fluid balance is FALSE?

Accepted Answer

A) Sodium and potassium play an important role in fluid balance. 
B) Magnesium is required for ATPase pump to function properly. 
C) Na-K-ATPase pump maintains appropriate concentrations of sodium and potassium on either side of the cell membrane. 
D) The concentration of potassium is higher in the extracellular fluid than in the intracellular fluid. 
A) Sodium and potassium play an important role in fluid balance. 
B) Magnesium is required for ATPase pump to function properly. 
C) Na-K-ATPase pump maintains appropriate concentrations of sodium and potassium on either side of the cell membrane. 
D) The concentration of potassium is higher in the extracellular fluid than in the intracellular fluid.

Question 15

What is the region at the end of the axon?

Accepted Answer

A) dendrite. 
B) synapse. 
C) neurotransmitter. 
D) exocytosis. 
A) dendrite. 
B) synapse. 
C) neurotransmitter. 
D) exocytosis.

Question 16

Which vitamin does NOT play a major role in either the oxidation of glucose,fatty acids,and amino acids or the formation of ATP?

Accepted Answer

A) thiamin. 
B) niacin. 
C) vitamin C. 
D) pantothenic acid. 
A) thiamin. 
B) niacin. 
C) vitamin C. 
D) pantothenic acid.

Question 17

Which is NOT a neurotransmitters?

Accepted Answer

A) serotonin. 
B) norepinephrine. 
C) dopamine. 
D) calcitonin 
A) serotonin. 
B) norepinephrine. 
C) dopamine. 
D) calcitonin

Question 18

Which nutrients play a vital role in the development of the mature red blood cell and their deficiencies result in megaloblastic anemia?

Accepted Answer

A) pantothenic acid and thiamin. 
B) niacin and vitamin B6. 
C) iron and riboflavin. 
D) folate and vitamin B12. 
A) pantothenic acid and thiamin. 
B) niacin and vitamin B6. 
C) iron and riboflavin. 
D) folate and vitamin B12.

Question 19

Which enzyme depends on manganese for its activity?

Accepted Answer

A) mucosal hyperoxidase 
B) glutathione peroxidase 
C) cytoplasmic superoxide dismutase 
D) mitochondrial superoxide dismutase 
A) mucosal hyperoxidase 
B) glutathione peroxidase 
C) cytoplasmic superoxide dismutase 
D) mitochondrial superoxide dismutase

Question 20

Which of the following nutrients does NOT support the maintenance of the organic components of bone?

Accepted Answer

A) copper. 
B) vitamin C. 
C) sodium. 
D) vitamin K. 
A) copper. 
B) vitamin C. 
C) sodium. 
D) vitamin K.

Exam 24: Focus 6: Focus on Integrating Nutrient Function in the Body

Folate,through its role in single carbon metabolism participates in reactions that result in what modification of DNA?

Among these statements about the homocysteine hypothesis,which one is FALSE?

Which nutrient does NOT play a role in blood clotting or blood thinning?

Which of the following nutrients does NOT play key role in the maintenance of the inorganic matrix,the hydroxyapatite crystals,of bone?

Which nutrient is important in preventing defects during the formation of the neural tube?

Present the role of vitamin A in the immune system.

Which vitamin is required for the formation of lymphocytes such as B- and T- cells?

Which mineral forms fluoroapatite and strengthens tooth enamel?

Among these statements about nutrients and the nervous function,which one is FALSE?

Which mineral is required for proteins to bind to DNA?

Energy metabolism,especially the electron transport chain,is a source of what kind of molecules?

A nutrient-derivative forms a nutrient-derivative-receptor complex that binds to DNA and ultimately mRNA is formed.What is being described?

Which mineral,as a component of a hormone,influences the expression of genes involved in the regulation of basal metabolism (the amount of energy consumed at rest)?

Which of the following statements about nutrients and fluid balance is FALSE?

What is the region at the end of the axon?

Which vitamin does NOT play a major role in either the oxidation of glucose,fatty acids,and amino acids or the formation of ATP?

Which is NOT a neurotransmitters?

Which nutrients play a vital role in the development of the mature red blood cell and their deficiencies result in megaloblastic anemia?

Which enzyme depends on manganese for its activity?

Which of the following nutrients does NOT support the maintenance of the organic components of bone?

Nutrition: Food for Health

Nutrition Guidelines: Applying the Science of Nutrition

Digestion, Absorption, and Metabolism

Carbohydrates: Sugars, Starches, and Fibre

Lipids

Proteins and Amino Acids

Energy Balance and Weight Management

A: the Water-Soluble Vitamins

The Fat-Soluble Vitamins

Water and the Electrolytes

Major Minerals and Bone Health

The Trace Elements

Nutrition and Physical Activity

Nutrition During Pregnancy and Lactation

Nutrition From Infancy to Adolescence

Nutrition and Aging: the Adult Years

Food Safety

World Hunger and Malnutrition

Focus 1: Focus on Beyond the Basics

Focus 2: Focus on Alcohol

Focus 3: Focus on Obesity, Metabolism, and Disease Risk

Focus 4: Focus on Phytochemicals

Focus5:focus on Natural Health Products

Focus 7: Focus on Eating Disorders

Focus 8: Focus on Biotechnology

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