Lab Exam

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Across
  1. 4. is the brown pigment (a xanthophyll) found in brown algae (seaweeds) and diatoms.
  2. 8. are solid lumps on plant roots formed by symbiotic bacteria and perform nitrogen fixation.
  3. 11. (sausage shape)
  4. 13. DNA sequences that can move to different locations within a genome, altering genetic identity, genome size, and gene function by disrupting or regulating genes.
  5. 14. is when they have an identical shape and appearance.
  6. 15. is the mass of hyphae that make up an individual organism.
  7. 16. in meiosis I when homologous chromosomes pair up tightly to form a bivalent or tetrad so they can cross over.
  8. 19. is the pairing and fusion of morphologically similar haploid gametes to form a diploid
  9. 20. is a type of sexual reproduction with egg and sperm.
  10. 23. are in the root tips of plants and are localized areas of rapid cell division due to active growth.
  11. 24. Rhodophyta
  12. 25. (comma shape)
  13. 26. are specialized, simple or branched stalks (hyphal branches) in fungi that produce asexual spores called conidia, acting like tiny spore-producing factories to facilitate rapid fungal reproduction and dispersal
  14. 30. is from brown algae that is used in ice cream, piant….
  15. 31. is the first single cell formed sexually, containing (DNA) from both parents to develop into a new, unique organism
  16. 32. is the diploid (2n), spore-producing stage in the life cycle of plants and algae, characterized by its role in generating haploid spores through meiosis
  17. 33. is sexual reproduction when genetic material is transferred to another bacterium and a new set of genes is assembled.
  18. 35. is the arrangement of astral microtubules radiating from a centriole. (none in plants)
  19. 37. is a hard resistant structure that’s dried plasmodium and remain dormant until conditions improve.
  20. 38. is the process of converting nitrogen gas into usable forms like ammonia so it’s available for organisms to build proteins and nucleic acids.
  21. 39. are small, nucleus-like structures containing chromosomes that fail to incorporate into the main nucleus during cell division. Linked to cancer
  22. 41. is a protective covering or tubular structure
  23. 42. is a cell state where two genetically different nuclei coexist within a single cell.
Down
  1. 1. (curly shape)
  2. 2. tests how sensitive bacteria is to antibiotics.
  3. 3. is the bodily movement in response to light, either toward the source of light or away.
  4. 5. in cyanobacteria are Specialized cells that fix nitrogen from the atmosphere.
  5. 6. (round shape)
  6. 7. earth is powder made from diatoms
  7. 9. is a reproductive cycle which haploid gametophytes produces gametes that fuse to form a zygote that germinates to produce a diploid sporophyte.
  8. 10. Phaeophyta
  9. 12. are crosswalls that separate cytoplasm and nuclei into cells.
  10. 17. are fungi that obtain food from dead organic matter.
  11. 18. is the gamete-producing and usually haploid phase, producing the zygote from which the sporophyte arises. It is the dominant form in bryophytes.
  12. 21. is a form of asexual reproduction where a single parent cell or organism divides into two or more daughter cells or individuals.
  13. 22. is the basic structure of a fungi, a slender filament of cytoplasm and nuclei enclosed by a cell wall.
  14. 27. is asexual reproduction where a new individual grows from an outgrowth (bud) on the parent. It’s a different size.
  15. 28. is a visible speck or patch of millions of bacterial cells that are typically the progeny of a single cell that reproduced on the agar’s surface.
  16. 29. are multinucleate and don’t have septa. (aseptate)
  17. 34. is a form of asexual reproduction where a parent organism breaks into distinct pieces, and each piece grows into a new, genetically identical individual.
  18. 36. is when it contains a single nucleus.
  19. 40. is a “false foot” used for movement and feeding