biology
Across
- 4. / attracted to water
- 6. / repelled by water
- 7. / a compound of the sterol type found in most body tissues
- 9. / the taking in of matter by a living cell by invagination of its membrane to form a vacuole.
- 10. / an organism made out of more than one cell.
- 12. / simplest cell structure without compartments or a nucleus. Have naked DNA and no mitochondria. Filled with cytoplasm.
- 13. / the expression of a particular gene(s) and not others in order for cell specialization.
- 14. / division of pre-existing cells or by prokaryotic cells for asexual reproduction. Single chromosome is replicated and moves to the opposite ends of the cell and detaches to form a copy of the chromosome.
- 15. / A single-celled organism that carries out all the functions of life by itself.
Down
- 1. / undifferentiated cells that have a capacity to divide into cells of the similar type, or to specialize into different types of cells.
- 2. / responsible for aerobic respiration. Converts chemical energy into ATP using oxygen.
- 3. / the theory that cells form the fundamental structural and functional units of all living organisms
- 5. / a two-layered arrangement of phosphate and lipid molecules that form a cell membrane, the hydrophobic lipid ends facing inward and the hydrophilic phosphate ends facing outward.
- 8. / have compartments for the chromosomes, this has advantages such as the pH and other damaging substances are maintained within the membrane of an organelle.
- 11. / the structural adaption of a cell to suit a particular function.