Macromolecules, Micromolecules and Enzymes Flashcards

1
Q

Primary role of carbohydrates?

A

The provision of energy to cells, especially the brain

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2
Q

What is dietary fibre?

A

Most complex form of carbohydrates

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3
Q

Role of protein

A

To maintain and replace tissues.

Provide structure, function and regulation of cells, tissues and organs

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4
Q

Major component of the cell membrane?

A

Phosphoglycerides

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5
Q

Where are saturated fats found?

A

Milk, cream, butter, cheese, meats

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6
Q

Where are unsaturated fats found?

A

Olive, canola and peanut oils

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7
Q

Where are polyunsaturated fats found?

A

Legumes, canola oils, margarines, linseed oils, walnuts, oily fish

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8
Q

What is the role of lipoproteins?

A

Enable fats and cholesterol to move within the bloodstream

e.g. chylomicrons, transporting dietary lipids

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9
Q

What is VLDL?

A

Very Low Density Lipids
Produced in the liver
Transport endogenous lipids

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10
Q

What is IDL?

A

Intermediate Density Lipids

Formed from degradation of VLDL

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11
Q

What is LDL?

A

Low Density Lipids

Present when the cholesterol content is greater than the triglyceride content

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12
Q

What is HDL?

A

High Density Lipids
Synthesised in the liver
Highest proportion of protein to cholesterol

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13
Q

Name the water-soluble vitamins

A

B1-3, 5-7, 9, 12

C

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14
Q

Name the fat soluble vitamins

A

A
D
E
K

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15
Q

What are the 6 classes of enzyme (in order)?

A
Oxidoreductases
Transferases
Hydrolases
Lyases
Isomerases
Ligases
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16
Q

Outline the principle of competitive inhibition

A

Competitor binds to enzyme, diminishing the rate of catalysis by reducing the proportion of enzyme molecules.
Relieve by increasing substrate concentration

17
Q

Outline the principle of noncompetitive inhibition

A

The inhibitor binds to a different site on the enzyme, changing the shape of the active site