MD_12

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Across
  1. 2. - the process that results in an increase of the number of cells
  2. 5. - the union of a sperm cell and an egg cell.
  3. 9. - a factor that is not directly involved in the catalytic act of RNA formation, but is necessary for the passage of the main stages of transcription and its regulation
  4. 12. - the physiological death of a cell, and can be caused by conditions such as basophilia, erythema, or a tumor.
  5. 14. – Name the matrix that is involved in keeping tissues separated, providing structural support or providing a structure for cells to migrate on.
  6. 15. - a structure that helps cells maintain their shape and internal organization
  7. 16. - The processes that generate tissue organization and shape and are usually the downstream response to the timing and patterning.
  8. 17. - the process in which a cell changes from one cell type to another.
  9. 18. - type of signaling molecule that acts on cells directly to induce distinct cellular responses in a concentration-dependent manner.
  10. 19. - Signaling at short range between cells of different ancestry and developmental potential that results in one cell or group of cells effecting a developmental change in the other.
  11. 20. - tending to spread prolifically and undesirably or harmfully (syn. – aggressive)
Down
  1. 1. - A normal gene which, when altered by mutation, becomes an oncogene that can contribute to cancer.
  2. 3. - an alteration in the nucleotide sequence of the genome of an organism, virus, or extrachromosomal DNA.
  3. 4. – Type of morphogenesis where numerous epithelial buds arise by repeated clefting of a single initial epithelial bud
  4. 6. - the process of programmed cell death
  5. 7. – A name of genes that encode GTPase proteins that help transduce survival- and growth-promoting signals.
  6. 8. - A class of genes (also called tumor suppressor genes) that are involved in the negative regulation of normal growth.
  7. 10. - the basic membrane-bound unit that contains the fundamental molecules of life.
  8. 11. – Signaling that connect the cell surface to the nucleus, leading to changes in gene expression in response to extracellular stimuli.
  9. 13. - formation of secondary foci of tumor growth