ANSC 3373 Exam 4

T/F saturated fatty acids provide more energy than unsaturated fatty acids

true

Lipids are not required nutrients for their energy component but specific deficiencies will occur in _______ if lipids are deprived from the diet.

A. fat soluble vitamins A,D,E, and K

B. water soluble vitamins, niacin and riboflavin

C. linoleic Acid

D. linolenic Acid

A, C, D

T/F lipases in ruminants do not function any differently than lipase in monogastrics

false

Products of fatty acid oxidation.

A. adenosine triphosphate

B. metabolic water

C. heat increment

D. NAD

E. energy

F. CH4

G. CO2

H. FAD

A, B, C, E

T/F long chain fatty acids are absorbed faster than short chain fatty acids

false

T/F microbes can synthesize fatty acids from amino acids and propionic acid

True

As the number of carbons _______ in the fatty acid, its melting point will _______.

A. decrease, decrease

B. decrease, increase

C. increase, increase

D. increase, decrease

A, C

T/F energy is generated at each (all five) steps of fatty acid oxidation.

false

Adipose tissue serves as...

A. a storage site for express lipids

B. a site for cholesterol biosynthesis

C. a site for fatty acid biosynthesis

D. a site for fatty acid oxidation

E. a storage site for excess energy

C, D, E

Glycerol...

A. is a source of energy in the body

B. is a building block for a mono- di- or triglyceride

C. determines the amount of energy available in lipids

D. cannot be digested by the microbe

E. be bio-synthesized by the pancreas

A, B

Cholesterol can...

A. be secreted with the bile

B. be reabsorbed in the small intestines

C. be used to synthesize sex hormones

D. be bio-synthesized by the pancreas

A, B

Excess cholesterol can be found...

A. in the arteries

B. as gallstones

C. mitochondria

D. in the gallbladder

A, B, D

Lipids are classified as...

A. compound lipids

B. sterols

C. esters

D. simple lipids

A, B, C, D

T/F linoleic acid can be synthesized from arachidonic acid

false

The storage site(s) for lipids in plants is (are)..

A. leaves

B. stems

C. Seeds

D. mesenteric area

A, B, C

T/F An unsaturated fatty acid is absorbed faster than a saturated fatty acid.

True

T/F energy is generated in fatty acid biosynthesis

false

T/F ergosterol is found on the surface of plants

true

T/F long chain fatty acids are absorbed by passive diffusion directly into the mesenteric veins

false

The source for the 2-carbon structures during the biosynthesis of fatty acids is...

A. butyryl CoA

B. ketones

C. caprylic acid

D. malonyl CoA

D

T/F The Kcal's of energy generated from the oxidation of fatty acids differ.

true

The amount of energy produced by lipids is...

A. 2.25 times less than carbohydrates

B. 2.25 times more than carbohydrates

C. equal to carbohydrates

D. no difference than carbohydrates

B

T/F microbes can change fatty acids

True

Energy is ____ the activation phase of the oxidation of fatty acids.

A. generated during

B. required for

C. not required for

D. produced from

B

Water is required in this step during fatty acid oxidation.

A. dehydrogenation phase 2

B. Activation

C. dehydrogenation phase 1

D. hydration phase

D

The single most important secretion from the gallbladder that effects and allows for efficient lipid digestion in monogastrics is...

A. bile salts

B. pancreatic secretions

C. enterokinase

D. fungi

A

A hormone which regulates the storage of triglycerides.

A. niacin

B. epinephrine

C. biotin

D. Insulin

D

Lipemia is a condition of...

A. high blood lipid concentration

B. obesity

C. low blood lipid concentration

D. malnourishment

A

The fat soluble vitamins include...

A. vitamin A

B. riboflavin

C. vitamin E

D. niacin

E. vitamin D

F. vitamin K

A, B, C, E, F

The oxidation of fatty acid is _____ % efficient.

A. 0

B. 100

C. 40

D. 90

C

Pancreatic lipases...

A. allows the lipid to mix with water so the bile can break the ester bond

B. remove the fatty acid from the alcohol

C. emulsify the lipid

D. break the ester bond

D

During fatty acid biosynthesis, the largest number of carbons in a fatty acid that can be made is...

A. 24

B. 10

C. 16

D. 12

C

The most abundant sterol in the animal's system is...

A. ergosterol

B. phospholipid

C. cholesterol

D. glycerol

C

Amino Acids that can be converted into fatty acids.

A. lipemia

B. lipoproteins

C. lipogenic

D. glycoproteins

C

As the degree of saturation of fatty acid _____, its melting point will ______.

A. increase, increase

B. decrease, increase

C. increase, decrease

D. decrease, decrease

A, D

Product(s) of bonding a short chain fatty acid with a monoglyceride is(are)...

A. metabolic water

B. an ester

C. a triglyceride

D. a monoglyceride

A, B

The liver serves as...

A. site for acid biosynthesis

B. hub of nutrient metabolism

C. site of cholesterol biosynthesis

D. site for fatty acid oxidation

A, B, D

site for lipid digestion in monogastrics

Duodenum

synthesizes fatty acid with odd number of carbons

Microbes

secreted and reabsorbed by the body

cholesterol

compound lipid

lipo-protein

alcohol component of lipids

glycerol

hydrolyzes lipids into free fatty acids

pancreatic lipases

site for fatty acid absorption in ruminants

jejunum

emulsifies lipids

bile salts

T/F the stored fat (adipose tissue) in monogastrics will have the same physical characteristics as the lipid that was in the diet.

True