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Exam (elaborations)

NUSC 1165 EXAM 2 QUESTIONS WITH COMPLETE ANSWERS

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NUSC 1165 EXAM 2 QUESTIONS WITH COMPLETE ANSWERS

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NUSC 1165
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Institution
NUSC 1165
Course
NUSC 1165

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Uploaded on
December 6, 2025
Number of pages
44
Written in
2025/2026
Type
Exam (elaborations)
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Questions & answers

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Type I diabetes


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Autoimmune: Immune system destroys the cells that make insulin.

- Diagnosed before age 30; 5-10% of diagnosed cases of diabetes.


- Genetics, viral infections, toxin exposure, abnormalities in immune system.




Acetyl CoA formation


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Mitochondria
Aerobic

Forms

, -2 acetyl coa
-CO2
-Electrons




Role of insulin


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Released in response to a high carbohydrate meal.
- Insulin facilitates the uptake and storage of glucose into the muscle, liver,
and fat-storing cells.




Allergen


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Any substance that causes an allergic reaction
- Human body recognizes allergen as a harmful, foreign substance




Purpose of alternative sweeteners


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Sugar substitutes, introduced to curb consumption of sweets.
-Not considered carbohydrates, and they provide little or no energy.




Products generated by bacteria in the LI

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- Vitamin K
- B vitamins
- Short chain fatty acids




System that absorbs carbs


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Glucose, fructose, and galactose travel to the liver via the hepatic portal
vein.

Galactose and fructose are metabolized for energy.


Glucose is stored as glycogen in the liver or released into the blood.




5 steps of carb digestion


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, Mouth: salivary amylase

Stomach: salivary amylase


Pancreas

Small Intestine
-Maltase Enzyme: breaks maltose (2 glucose)
-Sucrase Enzyme: breaks sucrose (1 glucose, 1 fructose)
-Lactase Enzyme: breaks lactose (1 galactose, 1 glucose)


Large intestine




Lactose intolerance


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Lactase available in minimal amounts
- Undigested lactose to LI
- Draws in water
- Metabolized by bacteria producing acids and gas

Decline in enzyme activity with age; infections/diseases.

Affects between 30 - 50 million adults
- Asian, African, Native Americans, and Mediterranean populations




Function of stomach


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