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Terms in this set (30)
Metabolism consists of two processes:
Catabolism and anabolism
Breaks down large molecules to small molecules to release energy
What's anabolic reaction?
Uses energy to make molecules for growth and maintenance
Where does the body store nutrients?
Liver, adipose tissue, skeletal muscle
Which factor mainly affecting BMR?
Body size(surface area)
The energy required to process the food is equal to————% of the energy content of the ingested food
Recommend daily allowance increases in:
Pregnancy and lactation
How much energy does 1kg of carbohydrate provide?
How much energy does 1kg of protein provide?
How much energy does 1kg of lipid provide?
How much energy does 1kg of alcohol provide?
Carbohydrate stores as what? for immediate use
Long term stores in adipose tissue as —————
Obesity is associated with:
Gall bladder disease
Is the type of protein energy malnutrition most commonly seen in children under the age of 15
Occurs typically in a young child displaced from breastfeeding by a new baby and fed a diet very low protein content
All living things use energy to :
Support the activity of tissues
In the case of mammals to maintain constant body temperature
Cells perform different type of work
1. Biosynthesis (synthesis of cellular component)
2. Transport works across cell membrane
3. Mechanical work muscle contraction
4. Electrical work nervous conduction
5. Osmotic work- kidney
Energy exists in many forms which are inter- convertible
Thermal, light, mechanical, electrical, osmotic and chemical
Exergonic reactions are
More energy is released than used (breaking bonds)
Endergonic reactions are
More energy is used than released (formation)
Metabolism is all about———— the energy released by exergonic reactions to that needed for endergonic reactions
Needs an intermediate process -The ADP/ATP cycle
Blood contains many chemicals:
1. Nutrients from diet on way to tissue for utilization, storage, inter-conversion
2. Nutrients released from storage on way to utilization elsewhere
3. Materials produced in cells for blood itself proteins, clotting factors etc
4. Waste products from tissues on way to excretion
Inter-conversion of energy happens in these tissues:
Maintains resting activities of the body
Maintenance of cells ion transport , function of organs
Maintaining body temperature
The major tissues contributing to BMR are:
Factors affecting BMR:
Mainly body size (surface area)
Factors tending to change body temperature (e.g. fever)
Endocrine status (hyperthyroidism)
Reproductive hormones (pregnancy and lactation)
Which body composition has the biggest difference in number between a 70kg and a 100kg man?
Two major types of malnutrition are
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