ch.3 Flashcards
what may organic substances be described as
chemicals produced by living organisms/ biomolecules
what are inorganic substances
not organic substances
organic substances that are cardon-containing except_____(4)
carbon dioxide, carbon monoxide, carbonic acids, salt derived from carbonic acids
examples of inorganic chemicals
water, minerals
examples of organic substances
carbohydrates, lipids, protein, nucleic acid->DNA
DNA carries_________ information that control cell activity
genetic
what is food important for
-providing energy to do activities and to keep warm
-providing raw materials for growth and repair of body tissues
-maintaining health
what mode of nutrition do humans use
heterotrophic nutrition
what are the primary food substances
carbohydrates, lipids, protein, water
what are the protective food substances
minerals, vitamins, dietary fibre
what elements are in carbohydrates
carbon, hydrogen and oxygen
what is the ratio of hydrogen to oxygen
2:1
carbohydrates are the _________and _________ source of energy for our body activities
main, immediate
where can excess carbohydrates be stored in
liver or muscle
what are the storage form of carbihydrates in humans and plants
glycogen and starch
what would further excess carbohydrates be stored as and where
lipids and it would be stored under the skin or around internal organs in humans
what is cellulose
the main component of the plant cell wall
name 3 examples of monossacharide
glucose, fructose and galactose
