Biological Molecules 2 Flashcards

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1
Q

Alternative method to measuring reducing sugar quantity other than a colorimeter

A

Alternative method to measuring reducing sugar quantity other than a colorimeter:
-Filter + dry precipitate
-Find mass/weight

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2
Q

Why is glycogen good for storage?

A

Glycogen is good for storage:
-It is insoluble -> does not affect water potential
-Branched -> makes molecules more compact

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3
Q

How can starch act as a source of energy?

A

Starch -> hydrolysed to glucose -> glucose can then be used in respiration

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4
Q

Starch molecule adaptations

A

Starch molecule adaptations:
-Compact
-Insoluble
-Large molecule

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5
Q

Cellulose molecule adaptations

A

Cellulose molecule adaptations:
-Long and straight chains
-Lots of microfibrils/fibres -> strengthens cell wall

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6
Q

How are triglycerides formed?

A

Formation of triglycerides:
-Formed by esterification of a glycerol with fatty acids x3
-Involves condensation reaction, removal of three water molecules

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7
Q

How to find percentage of lipid in plasma membrane by mass

A

How to find percentage of lipid in plasma membrane by mass:
-Divide mass of each lipid by total mass of all lipids
-Multiply by 100

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8
Q

Endopeptidase

A

Endopeptidases break proteins into small polypeptides by breaking the bonds in the middle

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9
Q

Exopeptidase

A

Exopeptidases break down protein but by taking single amino acids of the end.

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