Biochemistry/ Macro Molecules

2. __________, electrons and protons
4. A a chemical bond in which one atom loses an electron to form a positive ion and the other atom gains an electron to form a negative ion (two words
6. Large group of organic compounds occurring in foods and living tissues and including sugars, starch, and cellulose.
12. the minimum amount of energy needed for reactants to form products in a chemical reaction is called _______ energy. (starts with an a)
13. Protons have a ________ charge
15. a pure substance formed when 2 or more different elements combine
16. Proteins are made up of small carbon compounds called ________________
19. A pure substance that cannot be broken down into other substances by physical or chemical means

1. chemical bonds are _______ during chemical reactions
2. Organic compounds that consist of many nucleotides linked in a long chain.
3. Atoms of the same element that have different number of neutrons
5. Neutrons have ______ charge
6. A chemical bond that involves sharing a pair of electrons between atoms in a molecule (two words)
7. breaking chemical bonds _______ energy (starts with an r)
8. forming chemical bonds ______ energy
9. Organic compounds that consist of large molecules composed of one or more long chains of amino acids
10. Organic compounds that are fatty acids
11. Lipids are made up of 3 ________ and 1 Glycerol
14. Protons, neutrons and electrons are ________ meaning particles smaller than the atom
17. Electrons have a ____________
18. Nucleic Acids store and transmit ________ information