nutrition in humans Flashcards
(12 cards)
1
Q
what is the food that humans eat made up of
A
complex organic compounds
2
Q
examples of complex organic compounds
A
- carbohydrates
- fats
- proteins
3
Q
why does digestion have to occur
A
- large molecules cannot be absorbed by the various parts of the body
- food materials can be broken down into molecules that are small enough to be absorbed
4
Q
digestion is a
A
catabolic process as complex molecules are broken down into simpler molecules
5
Q
what is nutrition
A
process by which organisms obtain food and energy for growth, repair and maintenance of the body
6
Q
in humans, nutrition consists of
A
- feeding/ingestion
- digestion
- absorption
- assimilation
- egestion
7
Q
feeding/ingestion
A
food is taken into the body
8
Q
digestion
A
large food molecules are broken down into smaller, soluble molecules that can be absorbed into the body cells
9
Q
absorption
A
nutrients move from the small intestine into the bloodstream
10
Q
assimilation
A
nutrients are used by cells to provide energy or to make new cytoplasm for growth
11
Q
egestion
A
undigested matter is removed from the body
12
Q
A
