Biology definitions

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Across
  1. 3. The process by which chromosomes move apart to opposite poles of a cell during cell division.
  2. 6. The filtration of substances from blood into the Bowman's capsule, through a partially permeable glomerular basement membrane, at high pressure.
  3. 9. A process occurring in plants, where one male gamete fuses with ovum to form diploid zygote, and the other male gamete fuses with 2 polar nuclei to form a triploid endosperm nucleus. (2 words)
  4. 11. The transfer of pollen from anther to the stigma.
  5. 12. A process where some absorbed food substances are converted into new protoplasm or used to provide energy.
  6. 13. A pair of these will have the same length, shape and centromere position. One was inherited from a male parent, the other was from a female parent. (2 words)
Down
  1. 1. The process of making mRNA from a sequence of DNA or gene. This occurs in the nucleus.
  2. 2. The process of making polypeptides or proteins from information coded on mRNA; ribosomes are required to catalyse this synthesis reaction.
  3. 4. A process where water receives excess nutrients like phosphates and nitrates, which causes excessive growth of algae and water plants.
  4. 5. When an organism contains genes from another organism of a different species, it is said to be a _____ organism.
  5. 7. The release of an egg from the ovary into the oviduct.
  6. 8. The expression of physical characteristics, based on the combination of alleles that an individual has.
  7. 10. The process by which non-biodegradable chemicals are not excreted by the body and are accumulated in the body of an organism.