molecules
What is the term for the substances found on the Periodic Table ?
elements
What type of elements are carbohydrates made from ?
carbon, hydrogen and oxygen
What chemical elements are lipids made from ?
carbon, hydrogen, and oxygen
What chemical elements are proteins made of ?
carbon, hydrogen, oxygen and nitrogen
starch
Name 4 the elements that make up 96% of your body by mass ?
carbon, hydrogen oxygen and nitrogen
What kind of organism produces carbohydrates ?
plants
What are the two types of lipids ?
fats and oils
What are some good food sources of protein ?
meat, fish, dairy, legumes, seeds
What chemical is used to test for reducing sugars ?
Benedict's solution
What is the definition of a biological molecule ?
2 or more non-metal atoms bonded together
What are some good food sources of carbohydrates ?
fruit, potatoes, rice, pasta, bread
What is the difference between a fat and an oil ?
Fats are solids at room temperature, whereas oils are liquids at room temperature
What is the name for a short chains of amino acids joined together ?
peptide
What is the positive result of a starch test ?
Iodine solution will change from amber to blue/black in the presence of starch.
Why is water an important nutrient ?
Water is a solvent; it can dissolve many things.
What smaller molecule make up carbohydrates ?
sugar
What are some good food sources of lipids ?
oil, fatty meat , dairy products, avocado, some fish
What is the term for a short chain of amino acids joined together ?
peptide
What result would you see if a substance contained a high amount AND a trace amount of reducing sugar ?
a brick red precipitate [a high amount of reducing sugar], and a green precipitate [a trace amount]
Name the element that makes up 65% of your body by mass ?
oxygen
What smaller molecule is starch made from ?
glucose
What types of molecules make up lipids ?
glycerol and fatty acids
What is the term for a long chain of amino acids joined together ?
polypeptide [protein]
What is the positive result of a Biuret test ?
Biuret solution turns from blue to violet int he presence of protein.