FOOD Flashcards
why do we obtain raw materials?
for growth and maintenance
nutrients are the chemicals that organism needs in order to what?
grow
build
repair tissues
make energy
What nutrients do we need to stay healthy?
carbohydrates
fats
proteins
water
minerals and vitamins
nutrients provide energy that fuels____?
all biological processes
how do humans obtain energy
by consuming plant and animal based food
What do cells use chemical energy for?
to fuel biological processes like growth and movement
why do endothermic animals need more energy?
To keep their bodies warm
(warm blooded)
In order to stay alive, your body performs different chemical reactions → These are all known as ?
METABOLISM
what is metabolism made up of?
CATABOLISM & ANABOLISM
what is catabolism?
metabolic reactions that breaks down molecules
What is anabolism?
the building of larger molecules
What is metabolic rate?
our body converts stored energy into working energy
What are factors that affect metabolic rate?
body size
physical activity
sex
age
genetic
What is basal metabolic rate ?
energy needed to stay alive
What are carbohydrates made up of ?
carbon
hydrogen
oxygen
What are the three types of carbohydrates
monosaccharides
disaccharides
polysaccharides
are carbohydrates are main source of energy
yes
what is monosaccharides and example
-single sugars
-glucose , fructose, galactose
Glucose is needed for cellular respiration
What is glucose needed for ?
cellular respiration
What are Disaccharides? and example
double sugars result of 2 monosaccharides joining together
maltose and sucrose
What are polysaccharides and example? what are they used for
3 or more monosaccharides together
used for energy storage in plants (starch) and in animals (glycogen)
Need to be digested before absorbing
example chitin in exoskeleton of insects, cellular in plant wall
what are sources of carbohydrates?
bread
Fruit
Grains
how much of an individuals energy does carbohydrates provide?
55%
where are carbohydrates stored in humans and what are they stored as?
In the liver as glycogen