Biology Unit 2 Key Terms 5.0 / 5 based on 2 ratings ? BiologyASAQA Created by: Rebecca CrackettCreated on: 27-04-13 17:08 10231469875 Across 1. An attraction between molecules of the same substance (8) 5. Acid; nucleic acid that uses the instructions stored in DNA to build proteins (3) 6. A compound of two or more amino acids (7) 8. A protein that is a catalyst for chemical reactions in organisms; it increases the rate of the reaction without being used up or changed (6) Down 2. water hating; insoluble in water (11) 3. One of the four major classes of large organic molecules, which are important in storing, transmitting, and making useful the information necessary for the processes of life (7, 4) 4. An atom that has a positive or negative electrical charge (3) 7. A nitrogen-containing base that is part of one of the types of nucleotide that makes up RNA; pairs with adenine (6) 9. One of the four major classes of large organic molecules, made of amino acids (8) 10. Any chemical compound that contains carbon bonded to at least one other atom, usually hydrogen (7, 8)
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