Energy Storage & Paleo Diet Flashcards
1
Q
where is excess energy from carbohydrates stored?
A
as lipids in the adipose tissue
2
Q
Acetyl-CoA
(TCA cycle)
A
shunts fatty acid synthesis in times of energy excess
3
Q
high ATP - acetyl-CoA goes?
A
fatty acid synthesis
4
Q
low ATP - acetyl-CoA goes?
A
enters TCA cycle to generate more ATP
5
Q
storage as glycogen
A
glycogenesis
- liver
- skeletal muscle
6
Q
storage as body fat
A
lipogenesis
- adipose tissue
7
Q
what does glucose utilize?
A
- adipose
- glycogen
- ribose-5-phosphate
- pyruvate
8
Q
glycogenesis - LIVER -
A
- 7-10% wet weight
- use glycogen to export glucose to the bloodstream when blood sugar is low
- glycogen stores depleted after 24hrs of fasting (humans)
- de novo synthesis of glucose for glycogen
9
Q
glycogenesis - SKELETAL MUSCLE -
A
- 1% of wet weight
- more muscle overall than liver
- use glycogen for energy ONLY
- use already-made glucose for synthesis of glycogen
10
Q
where is lipogenesis found in the avian & human body?
A
liver
11
Q
where is lipogenesis found in pig?
A
100% in adipocyte
12
Q
where is lipogenesis found in dog/cat?
A
mixed; but favors hepatocyte
13
Q
where is lipogenesis found in beef?
A
adipocyte
14
Q
where is lipogenesis found in rodents?
A
adipocyte & hepatocyte; 50/50
15
Q
lipogenesis
A
- occurs in the cytosol
- synthesizes triglycerides to be stored as energy in the adipose tissue
