Biology definitions
Across
- 3. The process by which chromosomes move apart to opposite poles of a cell during cell division.
- 6. The filtration of substances from blood into the Bowman's capsule, through a partially permeable glomerular basement membrane, at high pressure.
- 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)
- 11. The transfer of pollen from anther to the stigma.
- 12. A process where some absorbed food substances are converted into new protoplasm or used to provide energy.
- 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. The process of making mRNA from a sequence of DNA or gene. This occurs in the nucleus.
- 2. The process of making polypeptides or proteins from information coded on mRNA; ribosomes are required to catalyse this synthesis reaction.
- 4. A process where water receives excess nutrients like phosphates and nitrates, which causes excessive growth of algae and water plants.
- 5. When an organism contains genes from another organism of a different species, it is said to be a _____ organism.
- 7. The release of an egg from the ovary into the oviduct.
- 8. The expression of physical characteristics, based on the combination of alleles that an individual has.
- 10. The process by which non-biodegradable chemicals are not excreted by the body and are accumulated in the body of an organism.