Biology topic 2 5.0 / 5 based on 1 ratingTeacher recommended ? BiologyDNA, genetics and evolutionASEdexcel Created by: anaortizCreated on: 18-05-17 10:25 38462110957 Across 1. A kind of transport where ions or molecules move against a concentration gradient. This process requires expenditure of energy and assistance of a carrier protein. ATP supplies energy for the carrier protein. (6, 9) 5. A distinct sequence of nucleotides forming part of a chromosome. (4) 6. Only needs one copy of the gene to have the phenotype (8) 7. Has the allele but isn't observable. (7) 8. Observable effect (9) Down 2. Globular proteins which speed up chemical reactions by lowering the activation energy, without being used up themselves. Has an specific active site, and forms an enzyme-substrate complex. (7) 3. A kind of transport by which ions or molecules move along a concentration gradient. No energy is required. (7, 9) 4. Bulk transport of substances into a cell by creation of a vesicle. (11) 9. Position on the chromosome (5) 10. Made up of a single strand of nucleotides. Pentose sugar is ribose and the base uracil replaces thymine. (3)
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