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Basic Science Boards > Biochem -Carbs > Flashcards

Biochem -Carbs Flashcards

1
Q

What 2 monosaccharides make up lactose?

A

Galactose and Glucose

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2
Q

What are the base chains and the attachment points.

A

Alpha 1-4 base

Alpha 1-6 chains

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3
Q

What 2 monosaccharises make up sucrose?

A

Glucose and fructose

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4
Q

Which polysaccharide is composed of glucose units linked by alpha-1,4 linkages?

A

Amylose

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5
Q

What polysaccharide has long chains of alpha-1,4 and every 25 molecules has an alpha 1,6 branch?

A

amylopectin

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6
Q

What polysaccharide has glucose linked by alpha 1,4 and alpha 1,6 linkages

A

Glucose

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7
Q

What polysaccaride has glucose molecules bound at beta 1,4 linkages?

A

Cellulose

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8
Q

Which disaccharide has 2 glucose units?

A

Maltose

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9
Q

Salivary amylase breaks down what type of linkages?

A

Alpha 1,4

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10
Q

Maltase cleaves which linkage?

A

Alpha 1, 4

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11
Q

The enzymes maltase, sucrase, dextrinase and lactase are found where?

A

In the brush borders of the mucosal cells

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12
Q

What is the rate limiting enzyme in the reaction of fructose to glucose?

A

fructokinase

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13
Q

What is the rate limiting enzyme in the reaction of galactose to glucose?

A

Galactokinase

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14
Q

Dextrin is only released from the hydrolysis of which polysaccharide?

A

Amylopectin

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15
Q

What is the rate limiting enzyme of Glycolosis?

A

Phosphofructokinase

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16
Q

Which enzyme is stimulated by stress, found in all tissues

A

Hexokinase

17
Q

Which enzyme used in Glycolysis is stimulated by insulin, found in the Pancreas and Liver?

A

Glucokinase

18
Q

Which glycogen acts as a ready source of Hexose units that are used for Glycolysis within the muscle?

A

Muscle glycogen - it is rarely depleted, except after long vigorous exercise bouts.

19
Q

Which glycogen is mainly used for Blood Glucose mainetance and mainly occurs between meals, as after 12-18 hours of fasting the liver is most depleted of glycogen.

A

Liver Glycogen

20
Q

These are disorders of glycogen mobilization or deposition. They are inherited, and may lead to death.

A

Glycogen Storage disorders.

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