NATS 1560 (test 1) 2023 with complete solution
Food science
•scientific and technological research on the properties of food substances, aimed at
inventing new food products and new methods of preservation and processing
Nutrition science
the scientific study of the processes through which food provides nourishment to the
body
what are the general characteristics of the modern sciences?
materialism, reductionism & experimentalism
What are macronutrients?
carbohydrates, lipids, proteins
what are micronutrients?
vitamins and minerals
Atomic theory
•all material substances are constituted of atoms
Element
•substance composed only of atoms of the same species
Compound
A substance made up of atoms of two or more different elements joined by chemical
bonds
Mixture
•can be separated and purified into simpler substances by physical means
Chemical formula
•symbolic expression representing the chemical composition of a molecule, (i.e. the
species and numbers of atoms composing it)
Chemical reaction
re-arrangement of the atoms of the reactants into new molecules (products)
catalyst
is a substance that facilitates the reaction but is not changed by the reaction
Molecular structure
arrangement of atoms in a molecule in 3d space
Structural formulas
2d representations of molecular structure
Isomers
molecules having the same chemical composition but different structures
Functional groups
recurring groups of atoms that determine the reactivity of organic molecules
What are the "macromolecules of life"?
•Carbohydrates
•Lipids
•Proteins
•DNA
Macronutrient distribution (for adults 19 & over)
Food science
•scientific and technological research on the properties of food substances, aimed at
inventing new food products and new methods of preservation and processing
Nutrition science
the scientific study of the processes through which food provides nourishment to the
body
what are the general characteristics of the modern sciences?
materialism, reductionism & experimentalism
What are macronutrients?
carbohydrates, lipids, proteins
what are micronutrients?
vitamins and minerals
Atomic theory
•all material substances are constituted of atoms
Element
•substance composed only of atoms of the same species
Compound
A substance made up of atoms of two or more different elements joined by chemical
bonds
Mixture
•can be separated and purified into simpler substances by physical means
Chemical formula
•symbolic expression representing the chemical composition of a molecule, (i.e. the
species and numbers of atoms composing it)
Chemical reaction
re-arrangement of the atoms of the reactants into new molecules (products)
catalyst
is a substance that facilitates the reaction but is not changed by the reaction
Molecular structure
arrangement of atoms in a molecule in 3d space
Structural formulas
2d representations of molecular structure
Isomers
molecules having the same chemical composition but different structures
Functional groups
recurring groups of atoms that determine the reactivity of organic molecules
What are the "macromolecules of life"?
•Carbohydrates
•Lipids
•Proteins
•DNA
Macronutrient distribution (for adults 19 & over)
