Carbohydrates

Question 1

What is the most important circulating carbohydrate?

Answer 1

Glucose

Question 2

How much glucose doe our diet contain?

Answer 2

Almost none

Question 3

How do we get glucose into our bodies?

Answer 3

We eat other carbohydrates (polysaccharides, disaccharides, fructose) and they are converted to glucose by our body

Question 4

What are the main dietary carbohydrates?

Answer 4

• Fructose
• Lactose
• Sucrose
• Amylose
• Amylopectin

Question 5

What makes up Lactose?

Answer 5

Gal + Glu

Question 6

What makes up Sucrose?

Answer 6

Fru + Glu

Question 7

What makes up Amylose?

Answer 7

alpha 1, 4 bonds

Question 8

What makes up Amylopectin?

Answer 8

alpha1, 6 & alpha1, 4 branches

Question 9

What is the first enzyme that acts on starch, lactose and sucrose in the body?

Answer 9

Alpha-amylase. It cuts them into molecules that are dozens of glucoses long

Question 10

What enzyme acts on starch, lactose and sucrose in the intestine?

Answer 10

It’s produced by pancreas - pancreatic amylase

Question 11

What enzyme acts on maltose, maltotriose and limit dextran at the brush boarder?

Answer 11

Brush border enzymes. These enzymes make monosaccharides that are transported into intestinal epithelial cells.