GI 14 Flashcards

1
Q

What is Digestion?

A

The process of breaking down large particles of food high-molecular weight substances into small molecules

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2
Q

What is Absorption?

A

The movements of the products of digestion across the intestinal epithelium of the body

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3
Q

What are the three macronutrients?

A
  • Fats
  • Carbohydrates
  • Proteins
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4
Q

What is the most common carbohydrate?

A

Glucose

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5
Q

What are the many different forms of dietary carbohydrates?

A
  • Monosaccharides
  • Disaccharides
  • Polysaccharides
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6
Q

How is glucose stored in the body?

A

As glycogen

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7
Q

What is Gluconeogenesis?

A

Production of glucose from non-carbohydrates

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8
Q

Where do non-digestible carbohydrates usually come from?

A

Plants sources (fiber)

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9
Q

What are two types of Monosaccharides?

A

Glucose and Fructose

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10
Q

What are three types of Disaccharides?

A
  • Maltose
  • Lactose
  • Sucrose
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11
Q

What are some examples of polysaccharides?

A

Starch and Glycogen

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12
Q

What is an example of a non-digestible carbohydrate that the body can’t digest?

A

Cellulose

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13
Q

Why is Amylose easier to breakdown than Cellulose?

A

Because Amylose ahs all is bonds on the same side so catalytic enzymes have easier access to these bonds to cleave them where in cellulose the bonds are on alternating sides

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14
Q

What is the most abundant dietary fat?

A

Triglycerides

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15
Q

What is the composition of triglycerides?

A

It has a glycerol and three fatty acid chains

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16
Q

What is the structural difference between saturated and unsaturated fatty acids?

A

Saturated fatty acids can pack together tightly whereas those with double bonds cannot pack together tightly

17
Q

What will cause a fat to be liquid at room temperature?

A

The presence of unsaturated bonds

18
Q

What is protein the major source of building blocks for?

A
  • Biological functions
  • New proteins
  • Neurotransmitters
19
Q

What is the primary structure of proteins?

A

Linear sequence of amino acids in a polypeptide chain

20
Q

What is the secondary structure of proteins?

A

Structural motifs in a polypeptide chain; alpha helices and beta pleated sheets

21
Q

What is the tertiary structure of proteins?

A

Three dimensional structure formed by polypeptide chain

22
Q

What are the quaternary structures of proteins?

A

Complexes with multiple polypeptide chains; hemoglobin

23
Q

What is an example of a quaternary strucutre?

A

Hemoglobin

24
Q

What are examples of supramolecular protein assemblies?

A
  • Protein complexes
  • Myofilaments
  • Collagen fibrils